ライフサイエンスコーパス: chemical ionization

1 urces (electrospray and atmospheric pressure chemical ionization).

2 s was accomplished with GC-MS using positive chemical ionization.

3 lecules can be ionized by electron impact or chemical ionization.

4 y ionization as well as atmospheric pressure chemical ionization.

5 es are analyzed and quantified by GC/MS with chemical ionization.

6 hloro fatty aldehydes utilizing negative ion chemical ionization.

7 n to the subspecies level was possible using chemical ionization.

8 em mass spectrometry by atmospheric pressure chemical ionization.

9 s spectrometry detection, using electron and chemical ionization.

10 Desorption atmospheric pressure chemical ionization, a variant of DESI that uses gas-pha

11 een observed under both atmospheric pressure chemical ionization and atmospheric pressure photoioniza

12 cterization of biochemical ions generated by chemical ionization and electrospray ionization and the

13 sure interface allowing atmospheric pressure chemical ionization and electrospray ionization is descr

14 ampling with subsequent atmospheric pressure chemical ionization and mass analysis.

15 into the gas phase for atmospheric pressure chemical ionization and mass spectrometric analysis.

16 lectrospray ionization, atmospheric pressure chemical ionization, and desorption electrospray ionizat

17 c pressure laser-induced acoustic desorption chemical ionization (AP/LIAD-CI) with O(2) carrier/reage

18 oups by atmospheric pressure covalent adduct chemical ionization (APCACI) tandem mass spectrometry us

19 Negative ion atmospheric pressure chemical ionization (APCI(-)) of 2378-TCDD was described

20 Atmospheric pressure chemical ionization (APCI) and electrospray ionization (

21 was recently coupled to atmospheric pressure chemical ionization (APCI) and shown to be of great util

22 pectrometers, one using atmospheric pressure chemical ionization (APCI) and the other using turbo ion

23 fit of the potential of atmospheric pressure chemical ionization (APCI) combined with GC and triple q

24 The potential of using atmospheric-pressure chemical ionization (APCI) coupled to a tandem quadrupol

25 ay ionization (ESI) and atmospheric pressure chemical ionization (APCI) for the analysis of a small p

26 utilizes gas chromatography with atmospheric chemical ionization (APCI) high-resolution quadrupole ti

27 Atmospheric pressure chemical ionization (APCI) in air or in nitrogen with ju

28 ay ionization (ESI) and atmospheric pressure chemical ionization (APCI) in both positive (+) and nega

29 Atmospheric pressure chemical ionization (APCI) in the positive ion mode and

30 matography coupled with atmospheric pressure chemical ionization (APCI) ion trap mass spectrometry (I

31 Atmospheric pressure chemical ionization (APCI) is used for efficient ionizat

32 e present work, classic atmospheric-pressure chemical ionization (APCI) is used.

33 Atmospheric pressure chemical ionization (APCI) mass spectrometry has shown s

34 ence has shown that the atmospheric pressure chemical ionization (APCI) mechanism can be more complex

35 s spectrometry (MS) and atmospheric pressure chemical ionization (APCI) MS were used in parallel for

36 Atmospheric pressure chemical ionization (APCI) offers the advantage of molec

37 sensitive using either atmospheric pressure chemical ionization (APCI) or electrospray ionization (E

38 hy (pSFC) coupled to an atmospheric pressure chemical ionization (APCI) source and a tandem mass spec

39 The novel atmospheric pressure chemical ionization (APCI) source has been used in combi

40 pole (Q) TOF MS with an atmospheric pressure chemical ionization (APCI) source in order to search for

41 ucts were ionized in an atmospheric pressure chemical ionization (APCI) source infused with one of tw

42 nside the plasma of the atmospheric pressure chemical ionization (APCI) source of a quadrupole ion tr

43 rectly connected to the atmospheric pressure chemical ionization (APCI) source prior to tandem mass s

44 med using the contained atmospheric pressure chemical ionization (APCI) source that enabled nontherma

45 e, a comparison with an atmospheric pressure chemical ionization (APCI) source was conducted.

46 The corona discharge atmospheric pressure chemical ionization (APCI) source was operated in positi

47 n electrospray (ESI) or atmospheric pressure chemical ionization (APCI) source, solid as well as liqu

48 ay ionization (ESI) and atmospheric pressure chemical ionization (APCI) was developed to simultaneous

49 Electrospray (ESI) and atmospheric pressure chemical ionization (APCI) were used to generate ions fr

50 te species, followed by atmospheric pressure chemical ionization (APCI) with a corona discharge (LD-A

51 hy (GC x GC) coupled to atmospheric pressure chemical ionization (APCI) with a high resolution (HR)-t

52 work, the potential of atmospheric pressure chemical ionization (APCI), a softer form of ionization,

53 zation (ESI), nano-ESI, atmospheric pressure chemical ionization (APCI), and desorption electrospray

54 photoionization (APPI), atmospheric pressure chemical ionization (APCI), and electrospray ionization

55 wo alkaloids using ESI, atmospheric pressure chemical ionization (APCI), and heated electrospray ioni

56 APPI were comparable to atmospheric pressure chemical ionization (APCI; e.g., 1 pg for reserpine).

57 d analyte flows into an atmospheric-pressure chemical-ionization (APCI) chamber and is analyzed in a

58 pray Ionization-ESI and Atmospheric Pressure Chemical Ionization - APCI) in LC-MS/MS systems, when an

59 licate glass flow tube reactors coupled to a chemical ionization atmospheric pressure interface time-

60 HOMs were detected with chemical ionization-atmospheric pressure interface-time-

61 search groups upon using ammonia reagents in chemical ionization, but the identity was unknown.

62 f volatile organic compounds (VOCs) based on chemical ionization by Au(+) ions has been proposed.

63 ed acoustic desorption (LIAD), combined with chemical ionization by the cyclopentadienyl cobalt radic

64 ed acoustic desorption (LIAD), combined with chemical ionization by the cyclopentadienyl cobalt radic

65 Covalent adduct chemical ionization (CACI) using a product of acetonitri

66 )-MS/MS and solvent-mediated covalent adduct chemical ionization (CACI)-MS/MS of monounsaturated BCFA

67 e-focusing mass spectrometer operating under chemical ionization (CI) and fast atom bombardment (FAB)

68 sfully used the nitrate ion (NO(3)(-)) based chemical ionization (CI) coupled to atmospheric pressure

69 to determine m/z of the [M - H]- ion, and by chemical ionization (CI) in ammonia to obtain accurate m

70 (GC-TOFMS) with electron ionization (EI) and chemical ionization (CI) in parallel are employed.

71 The combination of chemical ionization (CI) IROA and EI/IROA affords a meta

72 he very core of trace gas analyses in modern chemical ionization (CI) mass spectrometer instruments,

73 In here, we show that GC methods coupled to chemical ionization (CI) MS have a clear advantage over

74 Use of CF(4) as a chemical ionization (CI) reagent gas leads to CF(3)(+) a

75 uid chromatography with atmospheric pressure chemical ionization combined with high resolution time-o

76 ions under conventional atmospheric pressure chemical ionization conditions also provides a source of

77 rated by self-reaction of acetonitrile under chemical ionization conditions, reacts with unsaturated

78 under electron capture atmospheric pressure chemical ionization conditions.

79 as chromatography using atmospheric pressure chemical ionization coupled to mass spectrometry (GC/APC

80 pectrometry using liquid electron ionization/chemical ionization (CP-MIMS-LEI/CI) as a direct mass sp

81 ient method, desorption atmospheric pressure chemical ionization (DAPCI), was also used to detect tra

82 using on-line HPLC with atmospheric pressure chemical ionization detection (LC-APCI/MS) yielded a mas

83 and direct inlet probe-atmospheric pressure chemical ionization (DIP-APCI) analyses were performed o

84 using a pulsed nano-ESI/atmospheric pressure chemical ionization dual source for ionization.

85 A multielement external chemical ionization/electron ionization source was coupl

86 bining electrospray and atmospheric pressure chemical ionization (ESCi) was selected for mass spectro

87 n (DESI) and desorption atmospheric pressure chemical ionization experiments are shown to allow rapid

88 A flame-induced atmospheric pressure chemical ionization (FAPCI) source, consisting of a mini

89 of-flight mass spectrometry (GC-QTOFMS) with chemical ionization for analysis providing a comprehensi

90 andling associated with atmospheric pressure chemical ionization for mass spectral analysis.

91 n of gas chromatography atmospheric pressure chemical ionization Fourier transform ion cyclotron reso

92 We developed a chemical ionization gas chromatography/mass spectrometry

93 the feeding period, was analyzed by negative chemical ionization gas chromatography/mass spectrometry

94 The method uses negative chemical ionization gas chromatography/mass spectrometry

95 ds were initially determined by negative ion chemical ionization gas chromatography/mass spectrometry

96 rneal epithelium and quantitated by negative chemical ionization-gas chromatography-mass spectrometry

97 implistic preparation scheme and analysis by chemical ionization-gas chromatography/mass spectrometry

98 ults indicate that electron capture-negative chemical ionization-gas chromatography/mass spectrometry

99 exose structure and thus must be analyzed by chemical ionization GC/MS in order to study multiple iso

100 nthermal sample vaporization with subsequent chemical ionization generates abundant ion signals for s

101 rce based on desorption atmospheric pressure chemical ionization has been developed and deployed for

102 s spectrometric technique using negative ion chemical ionization has been developed for the quantitat

103 Finally, work involving chemical ionization has provided abundant information on

104 nd analyzed by gas chromatography coupled to chemical ionization high-resolution quadrupole time-of-f

105 and negative modes and atmospheric pressure chemical ionization in positive mode.

106 mass spectrometry with atmospheric pressure chemical ionization in selected reaction monitoring mode

107 itivity of detection by atmospheric pressure chemical ionization in the negative ion mode.

108 Atmospheric pressure chemical ionization in the positive ion mode and multipl

109 vaporized and ionized by electron impact or chemical ionization in the source.

110 ector; in this case, an atmospheric pressure chemical ionization interface of a triple quadrupole mas

111 luated by both APPI and atmospheric pressure chemical ionization interfaces were found to be well cor

112 Atmospheric pressure chemical ionization is employed for direct air analysis,

113 developed using capillary gas chromatography-chemical ionization (isobutane)-ion-trap mass spectrosco

114 y liquid chromatography atmospheric pressure chemical ionization (LC-APCI) analysis and confirmed by

115 /mass spectrometry with atmospheric pressure chemical ionization (LC-APCI/MS).

116 from the molecular ions and from their self-chemical ionization ([M]*+, [M+147]+, i.e., [M+(CH3)2-Si

117 aerosol was measured using a high-resolution chemical ionization mass spectrometer (CIMS) equipped wi

118 ter Inlet for Gases and AEROsol coupled to a chemical ionization mass spectrometer (CIMS).

119 wall flow tube coupled to a highly sensitive chemical ionization mass spectrometer (CIMS).

120 coupled to a high-resolution time-of-flight chemical ionization mass spectrometer (FIGAERO-HR-ToF-CI

121 sroom using a high-resolution time-of-flight chemical ionization mass spectrometer (HRToF-CIMS) equip

122 an online PTV-GC system with a negative-ion chemical ionization mass spectrometer (methane reagent g

123 tory characterizations of the peroxy radical chemical ionization mass spectrometer (PerCIMS) instrume

124 nds were studied in a selected ion flow tube-chemical ionization mass spectrometer (SIFT-CIMS) at 0.5

125 were performed using the Thermal Desorption Chemical Ionization Mass Spectrometer (TDCIMS) and Ultra

126 nd temperature-programmed desorption aerosol-chemical ionization mass spectrometer analysis of gas-pa

127 e mixture using a novel approach combining a chemical ionization mass spectrometer coupled with a hea

128 l days with a high-resolution time-of-flight chemical ionization mass spectrometer equipped with iodi

129 latilization impactor (MOVI) high-resolution chemical ionization mass spectrometer in Detling, United

130 uld detect VX selectively and sensitively in chemical ionization mass spectrometers.

131 Atmospheric pressure chemical ionization mass spectrometric analysis of the v

132 icle sampling and volatilization with online chemical ionization mass spectrometric analysis.

133 triamcinolone acetonide (TAA) under methane chemical ionization mass spectrometric conditions were e

134 s of trace explosive vapor with negative ion chemical ionization mass spectrometric detection.

135 A selected ion flow tube-chemical ionization mass spectrometric method is present

136 natural isotopomer distribution in negative chemical ionization mass spectrometric mode.

137 We used atmospheric pressure chemical ionization mass spectrometry ((-)APCI-MS) and a

138 In particular, atmospheric pressure chemical ionization mass spectrometry ((-)APCI-MS) provi

139 per describes atmospheric pressure-ion drift chemical ionization mass spectrometry (AP-ID-CIMS) for m

140 e liquid chromatography-atmospheric pressure chemical ionization mass spectrometry (APCI LC-MS) was d

141 omatography (HPLC) with atmospheric pressure chemical ionization mass spectrometry (APCI-MS) is perfo

142 laser vaporization, and atmospheric pressure chemical ionization mass spectrometry (APCI-MS) is prese

143 Direct infusion atmospheric pressure chemical ionization mass spectrometry (APCI-MS) was comp

144 ectrometry (ESI-MS) and atmospheric pressure chemical ionization mass spectrometry (APCI-MS).

145 ion products was also conducted using online chemical ionization mass spectrometry (CI-TOFMS) where f

146 combination of a customized F-TD inlet with chemical ionization mass spectrometry (CIMS) and ultrape

147 along with BrO and Br2, were conducted using chemical ionization mass spectrometry (CIMS) during the

148 A new technique employing chemical ionization mass spectrometry (CIMS) is describe

149 By contrast, nitrate anion chemical ionization mass spectrometry (CIMS) observation

150 Here, we used a coated-wall flow tube and chemical ionization mass spectrometry (CIMS) to study th

151 s was performed using online high-resolution chemical ionization mass spectrometry (CIMS) using the i

152 el (LDD) vehicle exhaust were measured using chemical ionization mass spectrometry (CIMS).

153 nalysis coupled with an atmospheric pressure chemical ionization mass spectrometry (FIA/APCI-MS) syst

154 romatography coupled to atmospheric pressure chemical ionization mass spectrometry (GC-APCI-MS), a st

155 gas chromatography/electron capture negative chemical ionization mass spectrometry (GC/ECNCI/MS).

156 An ion drift-chemical ionization mass spectrometry (ID-CIMS) techniqu

157 uid chromatography with atmospheric pressure chemical ionization mass spectrometry (LC/APCI-MS) was u

158 nsferred to a detector (atmospheric pressure chemical ionization mass spectrometry (MS) or gas chroma

159 recently introduced plasma-assisted reaction chemical ionization mass spectrometry (PARCI-MS) for ele

160 romatography coupled to atmospheric pressure chemical ionization mass spectrometry allowed us to do q

161 coated-wall flow tube experiments, both with chemical ionization mass spectrometry detection of the g

162 gas chromatography electron-capture negative chemical ionization mass spectrometry for the enrichment

163 time resolution, month-long measurements by chemical ionization mass spectrometry in a previously un

164 ormaldehyde utilizing selected ion flow tube-chemical ionization mass spectrometry is reported.

165 asuring cannabinoids by atmospheric pressure-chemical ionization mass spectrometry permitted measurem

166 We have developed a chemical ionization mass spectrometry technique for prec

167 nisms have been determined using a flow tube chemical ionization mass spectrometry technique.

168 Soft chemical ionization mass spectrometry techniques, partic

169 We used chemical ionization mass spectrometry to examine changes

170 racterized using gas chromatography-negative chemical ionization mass spectrometry to facilitate K(f)

171 on house dust and identified by positive ion chemical ionization mass spectrometry up to 2.5 h after

172 by capillary gas chromatography-negative ion chemical ionization mass spectrometry using selected ion

173 reactions can be directly probed by means of chemical ionization mass spectrometry with a detection l

174 With use of electron and chemical ionization mass spectrometry, C(4)S(6) and C(6)

175 Using chemical ionization mass spectrometry, I2 was observed i

176 (HDX) with thermal desorption iodide-adduct chemical ionization mass spectrometry, we provide direct

177 luding electron capture atmospheric pressure chemical ionization mass spectrometry, were utilized to

178 r 25(OH)D by using HPLC atmospheric pressure chemical ionization mass spectrometry.

179 ivatives, which are detected by negative ion chemical ionization mass spectrometry.

180 raphy/positive ion mode atmospheric pressure chemical ionization mass spectrometry.

181 ordination ionspray and atmospheric pressure chemical ionization mass spectrometry.

182 matography coupled with atmospheric pressure chemical ionization mass spectrometry.

183 nd 153 ppt of HO(2)NO(2) were measured using chemical ionization mass spectrometry.

184 enzyl bromide, which is detected by negative chemical ionization mass spectrometry.

185 apillary gas chromatography and negative ion-chemical ionization mass spectrometry.

186 F2alpha), by gas chromotography/negative ion chemical ionization mass spectrometry.

187 ope dilution gas chromatography negative-ion chemical ionization mass spectrometry.

188 spectroscopy (ESI-MS) or gas chromatography-chemical ionization mass spectroscopy (GC/CI-MS).

189 zed by gas chromatography (GC) with negative chemical ionization mass spectroscopy (NCI-MS).

190 Negative ion chemical ionization mass spectroscopy of two major compo

191 I was substantiated using gas chromatography-chemical ionization mass spectroscopy.

192 A high-resolution time-of-flight chemical-ionization mass spectrometer (HR-ToF-CIMS) usin

193 g gas chromatography and quantified by using chemical-ionization mass spectrometry that produces pred

194 romatography coupled to atmospheric-pressure chemical-ionization mass spectrometry, and show that cho

195 ectrometry (ESI-MS) and atmospheric pressure chemical ionization-mass spectrometry (APCI-MS) for the

196 an and indoor air using atmospheric pressure chemical ionization-mass spectrometry (APCI-MS).

197 ray detection (PDA) and atmospheric pressure chemical ionization-mass spectrometry (APCI-MS).

198 Gas chromatography-atmospheric pressure chemical ionization-mass spectrometry (GC-APCI-MS) incre

199 n liquid chromatography/atmospheric pressure chemical ionization-mass spectrometry (LC/APCI-MS).

200 rCl, and Cl2 made using atmospheric pressure chemical ionization-mass spectrometry at Alert, Nunavut,

201 lly pure Ch-15-HpETE by atmospheric pressure chemical ionization-mass spectrometry coupled with chira

202 traction and gas chromatography-positive ion chemical ionization-mass spectrometry.

203 alpha) using gas chromatography-negative ion chemical ionization-mass spectroscopy in 10 normal subje

204 (2alpha)) by gas chromatography-negative ion chemical ionization-mass spectroscopy, and histamine by

205 isotope dilution gas chromatography/negative chemical ionization/mass spectrometry (MS) assay for 15-

206 uanidine] by gas chromatography/negative-ion chemical ionization/mass spectrometry after derivatizati

207 newly developed gas chromatography/negative chemical ionization/mass spectrometry method employing 2

208 Gas chromatography/negative ion chemical ionization/mass spectrometry was used to determ

209 named electron capture atmospheric pressure chemical ionization/mass spectrometry, provided an incre

210 gas chromatography/electron capture negative chemical ionization/mass spectrometry.

211 Special attention is given to the soft chemical ionization method known as selected ion flow tu

212 pared with conventional atmospheric pressure chemical ionization methodology.

213 pectrometry (CI-APi-TOF) using two different chemical ionization methods, i.e., acetate-ion-based (CH

214 etection of condensed phases than with other chemical ionization methods.

215 in real time (DART)-type metastable-induced chemical ionization (MICI, molecular weight limited).

216 running in the negative atmospheric pressure chemical ionization mode (APCI-qTOF-HRMS).

217 ection with an electron capture negative ion chemical ionization mode was employed to enhance the sen

218 in electron ionization and also in negative chemical ionization mode with a further gain in signal-t

219 meter in a positive ion atmospheric pressure chemical ionization mode.

220 d, and detected by GC-MS in the negative-ion chemical ionization mode.

221 trospray ionization and atmospheric pressure chemical ionization modes of MS.

222 ization and pulsed positive ion/negative ion chemical ionization modes on two different GC columns (o

223 patterns from electronic impact and positive chemical ionization modes, several products were tentati

224 nitrates (pONs) were quantified using online chemical ionization MS during June and July of 2013 in r

225 ol was confirmed by radio-HPLC,(1)H-NMR, and chemical ionization-MS.

226 etected by negative ion-atmospheric pressure chemical ionization-MS/MS.

227 t, a new contained nano-atmospheric pressure chemical ionization (nAPCI) source was developed that al

228 GC-QTOF-MS extracts were run in negative chemical ionization (NCI) for 21 targets (mainly pyrethr

229 nal standard [1-(13)C]3MH (M+1) and negative chemical ionization (NCI) gas chromatography/mass spectr

230 The negative chemical ionization (NCI) spectrum of the corresponding

231 nd 20-HETE were detected in the negative ion chemical ionization (NICI) using methane as a reagent ga

232 ethods such as negative ion electron capture chemical ionization, no derivatization of retinoic acid

233 A similar mechanism involving the chemical ionization of acetone with excess ammonia also

234 Chemical ionization of all the agents and simulants was

235 cy and repeatability of atmospheric pressure chemical ionization of both methyl chloroformate (MCF) a

236 Anions generated by chemical ionization of fluoranthene are often used for b

237 water was used as the reagent ion (H3O+) for chemical ionization of methanol in an ion trap mass spec

238 the efficiency of desorption and subsequent chemical ionization of nonvolatile, thermally labile mol

239 Chemical ionization of organic compounds with negligible

240 iquid chromatography to atmospheric pressure chemical ionization of quadrupole time-of-flight mass sp

241 tes a (63)Ni source for atmospheric-pressure chemical ionization of the analytes.

242 ce sampling followed by atmospheric pressure chemical ionization of the gas phase species produced wi

243 The atmospheric pressure chemical ionization of triacetone triperoxide (TATP) wit

244 t, leading to generation of reagent ions for chemical ionization of vaporized analyte.

245 Chemical ionization Orbitrap mass spectrometry (CI-Orbit

246 ent quantitation, as measured by GC-positive chemical ionization (PCI)-MS/MS.

247 agment ions generated under the negative ion chemical ionization process.

248 tical performance is achieved using negative chemical ionization providing detection limits of 150 ng

249 electrospray ionization-atmospheric pressure chemical ionization (rDUVLAESCI) source is presented.

250 Chemical ionization reaction time-of-flight mass spectro

251 of M- or M x NO2- from atmospheric pressure chemical ionization reactions in purified air at 100 deg

252 in the mass analyzer for up to 10 s to allow chemical ionization reactions with the neutral molecules

253 The mass spectrum of the chemical ionization reagent acetonitrile in an ion trap

254 distances, was obtained using ethanol as the chemical ionization reagent and using pooled masses repr

255 Prior to analysis using methanol as the chemical ionization reagent gas, the extract was dried w

256 The technique utilizes NO(2)(-) as a chemical ionization reagent in an electron-transfer reac

257 t protonated hydrazine can serve as a useful chemical-ionization reagent for quantifying atmospheric

258 The alkali metal ions serve as in situ chemical ionization reagents of the neutral analyte mole

259 Chemical ionization reduced the amount of fragmentation

260 go deoxygenation during atmospheric pressure chemical ionization resulting from thermal energy activa

261 le the third was equipped with a nitrate ion chemical ionization source allowing detection of neutral

262 was integrated with an atmospheric pressure chemical ionization source and a tandem mass spectromete

263 The use of a new atmospheric-pressure chemical ionization source for gas chromatography (APGC)

264 A novel chemical ionization source for organic mass spectrometry

265 ctron emitter as a soft atmospheric pressure chemical ionization source is presented, which operates

266 to fast pyrolysis in an atmospheric pressure chemical ionization source of a linear quadrupole ion tr

267 mer into the commercial atmospheric pressure chemical ionization source on this mass spectrometer.

268 irect injection into an atmospheric pressure chemical ionization source operated in negative ion mode

269 iquid injection into an atmospheric pressure chemical ionization source, followed by quadrupole time-

270 s of an ambient DART-type metastable-induced chemical ionization source.

271 e of a corona discharge atmospheric pressure chemical ionization source.

272 mples into a commercial atmospheric pressure chemical ionization source.

273 contact nESI/nAPCI (nanoatmospheric pressure chemical ionization) source that allows simultaneous det

274 e liquid chromatography-atmospheric pressure chemical ionization tandem mass spectrometric (UHPLC-APC

275 Methods for atmospheric pressure chemical ionization tandem mass spectrometry (APCI-MS/MS

276 rmed using positive ion atmospheric pressure chemical ionization tandem mass spectrometry (APCI-MS/MS

277 omatography combined to atmospheric pressure chemical ionization tandem mass spectrometry, GC/APCI-MS

278 Acetonitrile chemical ionization tandem MS was used to determine doub

279 d liquid chromatography/atmospheric pressure chemical ionization-tandem mass spectrometry (LC/APCI-MS

280 A new isotope dilution gas chromatography/chemical ionization/tandem mass spectrometric method was

281 n liquid chromatography/atmospheric pressure chemical ionization/tandem mass spectrometry.

282 ques, including on-line atmospheric pressure chemical ionization techniques.

283 We present results from a high-resolution chemical ionization time-of-flight mass spectrometer (HR

284 The molecular MS (atmospheric pressure chemical ionization time-of-flight, APCI-TOF-MS) data se

285 Here we propose a novel approach based on chemical ionization-time-of-flight (CI-TOF) mass spectro

286 h GCxGC coupled to electron capture negative chemical ionization-time-of-flight mass spectrometry (EN

287 in combination with proton-transfer reaction chemical ionization to provide the advantages of specifi

288 ng capillary gas chromatography/negative ion chemical ionization to quantitate urine concentrations o

289 ionization (EI) at low energies (10 eV) and chemical ionization using cyclopentadienyl cobalt radica

290 ieved through selective atmospheric pressure chemical ionization using nitrate reactant ions (NO(3)(-

291 ion and compared for electron ionization and chemical ionization using several liquid reagents with i

292 trospray ionization and atmospheric pressure chemical ionization, using a common atmosphere/vacuum in

293 Atmospheric pressure chemical ionization was compared with electrospray ioniz

294 As a result, chemical ionization was shown to be more effective than

295 iode thermal desorption/atmospheric pressure chemical ionization was systematically investigated for

296 ilization followed by electron ionization or chemical ionization, which can lead to a considerable de

297 Chemical ionization with a series of proton-transfer rea

298 at, during negative ion atmospheric pressure chemical ionization with collision-induced dissociation,

299 ed acoustic desorption (LIAD), combined with chemical ionization with the ClMn(H(2)O)(+) ion, is demo

300 ng of the ion source to atmospheric-pressure chemical ionization with the exact same chromatographic