ライフサイエンスコーパス: isotope dilution

1 to nitrate during the analysis (double spike isotope dilution).

2 using respirometry, and body composition by isotope dilution.

3 (15)N(-) internal standard could be used for isotope dilution.

4 erinsulinemic-euglycemic clamp combined with isotope dilution.

5 ere quantified in clinical samples using 13C isotope dilution.

6 d analysis of Pa in silicate rock samples by isotope dilution.

7 at bases the calibration on the principle of isotope dilution.

8 Ileal endogenous AA flows were determined by isotope dilution.

9 ring hyperinsulinemic-euglycemic clamps with isotope dilution.

10 procedural blank from the result obtained by isotope dilution.

11 med by an immunoaffinity purification stable isotope dilution ([(15)N(5)]-8-oxo-dGuo) liquid chromato

12 s validated by immunoaffinity capture stable isotope dilution ([(15)N(5)]8-oxo-dGuo) liquid chromatog

13 HPLC/(71)Ga species-unspecific isotope dilution ((71)Ga-SUID) ICP-MS was subsequently d

14 les per kilogram fresh weight as measured by isotope dilution, accounting for 19% of the ester indole

15 brid of the method of standard additions and isotope dilution allowing correction for nonlinear trend

16 high-purity germanium gamma spectrometry and isotope dilution alpha spectrometry to quantitate NORM.

17 A new procedure, applying stable isotope dilution analysis (SIDA) and dynamic headspace-t

18 -amino acids and the development of a stable isotope dilution analysis (SIDA) for their simultaneous

19 The method constitutes stable isotope dilution analysis (SIDA) in conjunction with hea

20 was used for their quantitation using stable isotope dilution analysis (SIDA) or standard addition (S

21 evaluation as a standard in species-specific isotope dilution analysis by HPLC coupled to inductively

22 d for use as a calibrant in species-specific isotope dilution analysis by HPLC coupled to inductively

23 lied the MIC methodology in combination with isotope dilution analysis for sulfur determinations, rep

24 ethodology based on capLC-ICP-QQQ and online isotope dilution analysis for the absolute and sensitive

25 ith (13)C, D2-formaldehyde, and developed an isotope dilution analysis method to quantitate these org

26 ow-resolution MS method for the quantitative isotope dilution analysis of 39 mono- to heptabrominated

27 timized ECNI source conditions, quantitative isotope dilution analysis of 39 PBDEs was conducted usin

28 Isotope dilution analysis showed that it occurred at a c

29 (15) N isotope dilution analysis showed that maize and wheat pl

30 determination of free IAA in plant tissue by isotope dilution analysis using gas chromatography-mass

31 re determined though calibration curves, and isotope dilution analysis was used to normalize the resu

32 ed for dried blood spot analysis with stable isotope dilution analysis.

33 een determined using a new strategy based on isotope dilution analysis.

34 composite samples was determined by means of isotope dilution analysis.

35 oxidation products) in human urine by stable isotope dilution analysis.

36 ge, for use as internal standards for stable isotope dilution analysis.

37 0.1 mumol VA/g liver with the use of retinol isotope dilution and <0.7 mumol/L for SR concentrations.

38 The isotope dilution and body density models provide estimat

39 The method is based on dual isotope dilution and cavity ring-down spectroscopy (DID-

40 rmination of proteins by nonspecies specific isotope dilution and external calibration high-performan

41 into the ARC or the PVN, in combination with isotope dilution and hyperinsulinemic-euglycemic clamp t

42 simultaneous targeted metabolic profiling by isotope dilution and non-targeted fingerprinting is prop

43 ESI-LC-MS/MS method with isotope dilution and SPE based on cation-exchange was de

44 ized to generate novel internal standard for isotope dilution and to extend the quantitative applicat

45 titative magnetic resonance, whole-body MRI, isotope dilution, and nitrogen and fluid balances.

46 mination of isotope effects, quantitation by isotope dilution, and quantification of isotope tracers

47 purification scheme, combined with a stable isotope dilution approach, was used to overcome problems

48 rnal standards, aligned with the traditional isotope dilution approach.

49 While isotope-dilution approaches using selected reaction moni

50 A stable isotope dilution assay (SIDA) with d7-gamma-decalactone

51 d wines for all grape varieties using Stable Isotope Dilution Assay (SIDA).

52 ifferent compounds were quantified by stable isotope dilution assay (SIDA): beta-damascenone, beta-io

53 The procedure is based on stable isotope dilution assay followed by liquid chromatography

54 extract dilution analysis (AEDA) and stable isotope dilution assays (SIDA).

55 Isotope dilution assays use stable isotopes as tracers o

56 These included dose-response tests and isotope dilution assays.

57 We applied isotope-dilution automated online two-dimensional ultrap

58 12% using external calibration and 4% using isotope dilution calibration].

59 or accuracy and precision through the use of isotope dilution, calibrator bracketing, and gravimetric

60 portant metrological outcome: blank-matching isotope dilution can be considered a primary method of a

61 ere optimized to exclude the major source of isotope dilution caused by the previously unknown breakd

62 An isotope dilution cold vapor inductively coupled plasma m

63 A method based on isotope dilution cold-vapor inductively coupled plasma m

64 elemental mercury (GEM) mass concentration: isotope dilution cold-vapor inductively coupled plasma m

65 (238)Pu amount ratio of all samples applying isotope dilution combined with chromatographic separatio

66 cedure (RMP) for total T3 in serum involving isotope dilution coupled with liquid chromatography-tand

67 A candidate reference method involving isotope dilution coupled with liquid chromatography/mass

68 ement procedure for 19-NA in urine involving isotope dilution coupled with liquid chromatography/tand

69 re for progesterone in human serum involving isotope dilution coupled with liquid chromatography/tand

70 t procedure for estradiol in serum involving isotope-dilution coupled with liquid chromatography-tand

71 measures of total body water by using stable isotope dilution (deuterium oxide) combined with body-we

72 d in the extracts with liquid chromatography/isotope-dilution electrospray-ionization mass spectromet

73 sides are purified by HPLC and quantified by isotope-dilution, electrospray ionization LC/MS-MS.

74 A simple and robust method using stable isotope dilution-electrospray ionization-tandem mass spe

75 Quantification was achieved by stable isotope dilution employing penta-deuterated (PG-Gs) or t

76 An isotope dilution experiment further indicates that these

77 Isotope dilution experiments reveal that each C-terminal

78 Furthermore, isotope dilution experiments suggest that the pathways t

79 al NMR strategy for metabolic flux analysis, isotope dilution experiments, and other methods that rel

80 ion to evaluate its use for species-specific isotope dilution experiments.

81 fumarate in isolated potato mitochondria by isotope dilution experiments.

82 ere assigned to the h16 octamer via detailed isotope dilution experiments.

83 r limit of quantitation (ULOQ), resulting in isotope dilution factors (IDF) of 100%/IA%.

84 concentration and isotopic data obtained by isotope dilution for a suite of newly available Chinese

85 nt proportions and by applying principles of isotope dilution for data analysis (GS-IDA).

86 The analysis was performed using isotope dilution gas chromatography tandem mass spectrom

87 NPRO was quantified by isotope dilution gas chromatography-mass spectrometry (G

88 Stable isotope dilution gas chromatography-mass spectrometry me

89 Sterol quantification was carried out by isotope dilution gas chromatography-mass spectrometry.

90 ouracil levels in human aortic tissue, using isotope dilution gas chromatography-mass spectrometry.

91 sphalt fume by electron impact ionization of isotope dilution gas chromatography/ mass spectrometry);

92 A new isotope dilution gas chromatography/chemical ionization/

93 The method was validated by species-specific isotope dilution gas chromatography/mass spectrometry (G

94 ces nitrating intermediates in vivo, we used isotope dilution gas chromatography/mass spectrometry to

95 Previously, we developed a stable isotope dilution gas chromatography/negative chemical io

96 We have developed and validated an isotope-dilution gas chromatography-coupled mass spectro

97 ations are physiologically relevant, we used isotope-dilution gas chromatography/mass spectrometry to

98 ated solid-phase extraction (SPE) coupled to isotope dilution-gas chromatography/mass spectrometry (G

99 A high-precision isotope dilution GC-MS method was employed for the deter

100 metry), measurement of skinfold thicknesses, isotope dilution (H(2)(18)O), and bioelectrical impedanc

101 y (DXA), underwater weighing (densitometry), isotope dilution (H(2)18O), bioelectrical impedance, ski

102 Iron excretion measured by isotope dilution has been a primary basis for the factor

103 ectrometry-based methods coupled with stable isotope dilution have become effective and widely used m

104 tion of furan and 2-methylfuran performed by isotope dilution headspace gas chromatography-mass spect

105 We used isotope dilution/hepatic vein catheterization techniques

106 wed by rapid quenching, acid hydrolysis, and isotope dilution high pressure liquid chromatography-ele

107 d-phase extraction (SPE) cleanup followed by isotope dilution high-performance liquid chromatography

108 In the present work, an isotope dilution high-performance liquid chromatography-

109 -phase extraction (SPE) method, coupled with isotope dilution high-performance liquid chromatography/

110 id-liquid extraction, and gas chromatography/isotope dilution high-resolution mass spectrometry after

111 We used gas chromatography isotope dilution high-resolution mass spectrometry to me

112 analytes was performed by gas chromatography-isotope dilution high-resolution mass spectrometry.

113 Here, we present a sensitive and selective isotope-dilution high performance liquid chromatography-

114 xtraction (SPE) coupled with on-line SPE and isotope-dilution high-performance liquid chromatography-

115 mples were analyzed using gas chromatography isotope-dilution high-resolution mass spectrometry.

116 etics of POB group transfer was monitored by isotope dilution HPLC-ESI(+)-MS/MS analysis of O(6)-POB-

117 Pt and Pd concentrations were measured using isotope dilution ICP-Q-MS, while Rh was measured directl

118 It was based on isotope dilution (ID) in the liquid phase with the (202)

119 l were determined by SLM-TIMS, employing the isotope dilution (ID) technique, with very good accuracy

120 ion (Top 3) and absolute quantification with isotope dilution (ID).

121 odel by air displacement plethysmography and isotope dilution in early (13-16 weeks) and late pregnan

122 AHF (isotope dilution) increased by 30% (P < 0.01, n = 8), fl

123 hic column and quantified by the post-column isotope dilution inductively coupled plasma mass spectro

124 raphy, whole-body norepinephrine kinetics by isotope dilution, insulin sensitivity by euglycemic-hype

125 for compensation of the procedural blank in isotope dilution is presented.

126 hods other than serum retinol alone, such as isotope dilution, is required to accurately assess VA st

127 lly quantified after re-extraction by stable isotope dilution LC-MS/MS analysis.

128 The validated isotope dilution LC-MS/MS method was used to measure BCM

129 A stable isotope dilution LC-MS/MS multi-mycotoxin method was dev

130 o contain caramel colorants were analyzed by isotope dilution LC-MS/MS to determine the contamination

131 Using stable isotope dilution LC-MS/MS, we detected the formation of

132 Using stable isotope dilution LC/ESI/MS/MS, we show that while guanin

133 ould be possible to develop the first stable isotope dilution LC/MS assay for a platinum drug in huma

134 tion of (24R),25(OH)2D3 in human serum using isotope-dilution LC-MS/MS.

135 Selected ion-monitoring isotope-dilution LC/MS (electrospray) has been developed

136 This method uses isotope dilution liquid chromatography coupled to a tand

137 w-weighted daily composites were analyzed by isotope dilution liquid chromatography tandem mass spect

138 easure TMAO in biological matrices by stable isotope dilution liquid chromatography tandem mass spect

139 in a selection of roasted coffee products by isotope dilution liquid chromatography-high resolution m

140 titation of peptides by non-species-specific isotope dilution liquid chromatography-inductively coupl

141 The accuracy and specificity of stable isotope dilution liquid chromatography-mass spectrometry

142 We have developed a stable isotope dilution liquid chromatography-multiple reaction

143 A recently developed stable isotope dilution liquid chromatography-multiple reaction

144 ic and sensitive methodology based on stable isotope dilution liquid chromatography/tandem mass spect

145 um SAM and SAH were measured by using stable-isotope-dilution liquid chromatography-mass spectrometry

146 Using a novel isotope-dilution liquid chromatography-mass spectrometry

147 tandard to develop an accurate and sensitive isotope-dilution liquid chromatography-tandem mass spect

148 e roundtable reviewed the possible use of an isotope-dilution liquid chromatography-tandem mass spect

149 by electrochemiluminescence assay and MMA by isotope-dilution liquid chromatography-tandem mass spect

150 erved tryptic peptides were quantified using isotope-dilution liquid chromatography-tandem mass spect

151 sensitivity of selected ion monitoring mode isotope-dilution liquid chromatography/mass spectrometry

152 and quantification procedure based on stable isotope-dilution liquid chromatography/tandem mass spect

153 We have developed a stable-isotope dilution, liquid chromatography-mass spectrometr

154 A modified isotope dilution mass spectrometric (IDMS) method treati

155 s injected with LTB4 was determined using an isotope dilution mass spectrometric assay before and aft

156 as instructions on how to use them in stable isotope dilution mass spectrometric-based analyses.

157 as chromatography inductively coupled plasma isotope dilution mass spectrometry (GC-ICP-IDMS) after d

158 quired in the traditional gas chromatography-isotope dilution mass spectrometry (GC-IDMS) reference m

159 iquid chromatography, and gas chromatography/isotope dilution mass spectrometry (GC/IDMS) methods are

160 An immunocapture isotope dilution mass spectrometry (IC-IDMS) method was

161 mers is achievable using acid hydrolysis and isotope dilution mass spectrometry (ID-MS).

162 ed a formulation for the detection limit for isotope dilution mass spectrometry (IDMS) after a thorou

163 onding samples; the latter was determined by isotope dilution mass spectrometry (IDMS) after decompos

164 The method of quantitation was based on isotope dilution mass spectrometry (IDMS) analysis of th

165 We have developed an isotope dilution mass spectrometry (IDMS) method to quan

166 To address this time lag, the isotope dilution mass spectrometry (IDMS) method was dev

167 y quantification using double exact matching isotope dilution mass spectrometry (IDMS) of the peptide

168 A double spike isotope dilution mass spectrometry (IDMS) procedure was

169 romatography (LC) based on postcolumn carbon isotope dilution mass spectrometry (IDMS) was developed.

170 etermination of creatinine in human serum by isotope dilution mass spectrometry (IDMS), because corre

171 at the protein level, tryptic digestion, and isotope dilution mass spectrometry (IDMS).

172 as verified by independent measurement using isotope dilution mass spectrometry (IDMS).

173 rotein solutions using double exact matching isotope dilution mass spectrometry (IDMS).

174 performance liquid chromatography (UPLC) and isotope dilution mass spectrometry (IDMS).

175 t application of (37)Cl-labeled compounds to isotope dilution mass spectrometry (IDMS).

176 the analyte was quantified by single-spiking isotope dilution mass spectrometry (IDMS).

177 iquid chromatography/electrospray ionization-isotope dilution mass spectrometry (LC/ESI-IDMS).

178 Stable isotope dilution mass spectrometry (MS) represents the g

179 ) in whole blood by triple-spiking speciated isotope dilution mass spectrometry (SIDMS) using headspa

180 biological samples using molecular speciated isotope dilution mass spectrometry (SIDMS).

181 based on the use of species-specific double isotope dilution mass spectrometry (SSIDA) in combinatio

182 Isotope dilution mass spectrometry and standard addition

183 tiple reaction monitoring (MRM) coupled with isotope dilution mass spectrometry can quantify candidat

184 gic use of enzymatic digestion combined with isotope dilution mass spectrometry has been increasingly

185 Here, Re is determined by isotope dilution mass spectrometry in sediments underlyi

186 We report here an isobaric-tagged isotope dilution mass spectrometry method for AAA that p

187 Protein quantification using stable isotope dilution mass spectrometry requires the quantifi

188 ooled-injection (CIS) gas chromatography and isotope dilution mass spectrometry to analyze 5-hydroxy-

189 Using the BAL fluid, we performed isotope dilution mass spectrometry to measure several pr

190 lls was analyzed using liquid chromatography/isotope dilution mass spectrometry to measure the biolog

191 uantification of a peptide by exact matching isotope dilution mass spectrometry where the total hydro

192 Absolute quantification was performed using isotope dilution mass spectrometry with a linear ion tra

193 l tryptic digestion, peptide separation, and isotope dilution mass spectrometry.

194 N-nitrosamines in samples was quantified by isotope dilution mass spectrometry.

195 mple preparation steps by applying speciated isotope dilution mass spectrometry.

196 nthesized and used as internal standards for isotope dilution mass spectrometry.

197 in serum has been developed utilizing stable isotope dilution mass spectrometry.

198 (4) determining the elements of interest by isotope dilution mass spectrometry.

199 licon material is central; it is measured by isotope dilution mass spectrometry.

200 E. coli Nth protein using gas chromatography/isotope-dilution mass spectrometry and DNA samples, whic

201 as accomplished using a combination of three isotope-dilution mass spectrometry approaches, with meas

202 ent and certification process included three isotope-dilution mass spectrometry approaches, with meas

203 els were calibrated to an assay traceable to isotope-dilution mass spectrometry.

204 phy/tandem mass spectrometry (GC-MS/MS) with isotope-dilution measured lower lesion levels in high-sa

205 A), measurement of total body water (TBW) by isotope dilution, measurement of total body potassium, a

206 , the accessible fraction (E) derived by the isotope dilution method (IDM) ranged from 0.28 to 0.89 a

207 ty measured by our method and by traditional isotope dilution method are in excellent agreement, with

208 IAA was measured by an isotope dilution method as the pentaflurobenzyl ester.

209 A double-spiking isotope dilution method capable of correcting and quanti

210 The nonlinear isotope dilution method could, in principle, be applied

211 a new specific, sensitive, and rapid stable isotope dilution method for the simultaneous detection o

212 mass spectrometry (SPE-UPLC-MS/MS) using the isotope dilution method in the colostrums of 21 women wh

213 nties in blank contamination; therefore, the isotope dilution method should be used with caution when

214 assayed by LC-MS/MS under MRM condition and isotope dilution method, using d(2)-labelled internal st

215 tandem mass spectrometry (LC-MS/MS) with the isotope dilution method, we assessed quantitatively the

216 P using two methods, the modern-dead and the isotope dilution method.

217 The assay involves the use of the stable isotope dilution method.

218 easures obtained by the gold standard stable isotope dilution method.

219 Tissue AEA was quantified using an isotope-dilution method and UPLC-ESI-MS/MS giving intra-

220 d to be as sensitive and quantitative as the isotope-dilution method for measuring blood-retinal barr

221 can be adapted as a safe alternative to the isotope-dilution method for quantitating blood-retinal b

222 loped an LC-MS/MS/MS coupled with the stable isotope-dilution method for the sensitive and accurate q

223 ctrometry (LC-MS/MS) coupled with the stable isotope-dilution method to quantify DNA-protein cross-li

224 Standard addition and isotope dilution methods were used for quantifications i

225 cated methodologies, including use of stable-isotope dilution methods, now allows for an accurate det

226 constituents were quantified using standard isotope dilution methods.

227 dy (40)K counting) to total body water (TBW; isotope dilution) methods (ECW(TBK-TBW)) in an ethnicall

228 An isotope dilution model for partitioning phenylalanine an

229 el, the Wells et al 4-compartment model, the isotope dilution model, dual-energy X-ray absorptiometry

230 gy were found to be comparable with standard isotope dilution MRM MS.

231 s an internal standard for quantification by isotope-dilution MS (IDMS).

232 Gas chromatography/isotope-dilution MS with selected-ion monitoring (GC/IDM

233 ght mass spectrometry (MS) and quantified by isotope dilution-MS.

234 yzed by negative ion electrospray ionization-isotope dilution-MS/MS using a multiple reaction monitor

235 of peptides coupled with analysis by stable isotope dilution multiple reaction mass spectrometry has

236 with the use of liquid-chromatography-stable-isotope dilution-multiple-reaction monitoring-mass spect

237 (3)-ethylthymidine), and O(4)-edT adducts by isotope dilution nanoflow liquid chromatography-nanospra

238 rapid identification and quantification (by isotope dilution) of carotenoids present in crude extrac

239 We developed a method using isotope dilution on-line solid-phase extraction (SPE) co

240 and milk compared favorably to conventional isotope-dilution one-dimensional gas chromatography-high

241 aration of BChE by antibody conjugated bead, isotope-dilution, pepsin digestion, followed by UHPLC se

242 ntification being performed according to the isotope dilution principle.

243 is work describes the first multiple spiking isotope dilution procedure for organic compounds using (

244 beled volatiles were quantified by a reverse isotope dilution procedure.

245 measuring the isotope ratios modified by the isotope dilution process.

246 mall sample volume (100 microL of serum) and isotope dilution quantification make this method suitabl

247 equivalent to conventional HPLC-ID/MS/MS for isotope dilution quantification of peptides and proteins

248 g with (18)O-labeled phosphate combined with isotope dilution quantitation allows measurement of the

249 ion mass spectrometry (2D-IC-ESI-MS) allowed isotope dilution quantitation of phosphate with simultan

250 uterated analogues to a sediment sample, the isotope dilution reached a steady state within 24 h of m

251 Since isotope dilution relies inherently on the linearity of r

252 -based method combined with "reverse" online isotope dilution ("reverse" online ID) for metabolite qu

253 Retinol isotope dilution (RID) is a more sensitive technique tha

254 r retinol stores determined by using retinol isotope dilution (RID).

255 The four spiked elements, determined by isotope dilution, served as internal standards for the r

256 ctrometry (MS/MS) with the concept of stable isotope dilution (SID) for metabolite quantitation.

257 oring mass spectrometry (MRM-MS) with stable isotope dilution (SID) is increasingly becoming a widely

258 -dC and dG-gx-dA cross-links based on stable isotope dilution (SID) nanoflow liquid chromatography na

259 uronidation metabolite (SN-38G) using stable isotope dilution (SID) ultrahigh-performance liquid chro

260 g synthetic heavy peptides coupled to stable isotope dilution-SRM (SID-SRM).

261 The isotope dilution standard calibration curve resulted in

262 re and after separation was used as internal isotope dilution standard for quantitative determination

263 For Cu quantification, two isotope dilution strategies have been developed.

264 alysis, making the use of relatively complex isotope-dilution strategies not necessary anymore.

265 Using an isotope dilution strategy, we have shown that nitrogen f

266 Urine isotope dilution studies identified citrulline and choli

267 Radiolabeling and isotope dilution studies now confirm that daidzein is no

268 overies of (13)C(12)-labeled PBDE and PBDD/F isotope dilution surrogates about 18% and 25%, respectiv

269 manuscript reports a liquid chromatographic-isotope dilution tandem mass spectrometric method for th

270 ional high-performance liquid chromatography-isotope dilution tandem mass spectrometry (HPLC-ID/MS/MS

271 -min ultra performance liquid chromatography-isotope dilution tandem mass spectrometry (UPLC-ID/MS/MS

272 Isotope dilution tandem mass spectrometry demonstrated t

273 llary liquid chromatography nanoelectrospray isotope dilution tandem mass spectrometry method for qua

274 ction-high performance liquid chromatography-isotope dilution tandem mass spectrometry to measure uri

275 ion, high-performance liquid chromatography, isotope-dilution tandem mass spectrometry.

276 ction-high performance liquid chromatography-isotope dilution-tandem mass spectrometry.

277 d via high performance liquid chromatography-isotope dilution-tandem mass spectrometry.

278 as chromatography/mass spectrometry with the isotope dilution technique (GC/IDMS) was also employed t

279 id chromatography/mass spectrometry with the isotope dilution technique (LC/IDMS).

280 ically digested, and levels were measured by isotope dilution technique using liquid chromatography/m

281 rometry (LC-MS/MS) method, together with the isotope dilution technique, for assessing the repair of

282 amino acid concentration using the enzymatic isotope dilution technique.

283 ovenous concentration difference with stable isotope dilution technique.

284 Gold-standard isotope dilution techniques are laborious and costly; th

285 inary PGE-M excretion in humans using stable isotope dilution techniques employing liquid chromatogra

286 d for use of suitable internal standards and isotope dilution techniques.

287 The paired (13)C-retinol isotope dilution test, a sensitive biomarker for VA stat

288 ntake and liver reserves estimated by stable-isotope dilution testing.

289 nsive two-dimensional gas chromatography and isotope dilution time-of-flight mass spectrometry (GCxGC

290 itrogen fixation was estimated through (15)N isotope dilution to be 65% nitrogen derived from air (Nd

291 We use side chain (13)C=(18)O labeling and isotope dilution to detect the presence of intermolecula

292 In this study, we applied the principle of isotope dilution to quantify bioaccessibility of legacy

293 Dissolved silicate was determined by double isotope dilution using a (29)Si spike, whereas one point

294 Stable isotope dilution using creatinine-d3 as internal standar

295 tubes with isopropyl alcohol extraction and isotope dilution using liquid chromatography coupled wit

296 ification of 1,4-dioxane was accomplished by isotope dilution using mass-labeled 1,4-dioxane-d8 as in

297 ry coupled with the calibration technique of isotope dilution were able to accurately quantify most c

298 d of multiple reaction monitoring and stable isotope dilution with an (18)O-labeled reference peptide

299 absolute quantification was accomplished by isotope dilution with labeled AQUA peptides.

300 n enzymatic DNA hydrolysates was achieved by isotope dilution with the corresponding 15N-labeled inte