ライフサイエンスコーパス: preconcentration

1 de was used to demonstrate ion isolation and preconcentration.

2 eved by selective photoreduction previous Se preconcentration.

3 or the determination of cadmium with on-line preconcentration.

4 nuous solid-phase extraction for cleanup and preconcentration.

5 mL) and does not rely on any form of sample preconcentration.

6 aration must be preceded by on-column sample preconcentration.

7 e photodetector and without requiring sample preconcentration.

8 e (Se-MetSeCys), and selenocysteine (Se-Cys) preconcentration.

9 separation, purification, fractionation, and preconcentration.

10 d, parallelization, signal amplification and preconcentration.

11 an 5 s at ambient temperature without sample preconcentration.

12 l time at ambient temperature without sample preconcentration.

13 ITP preconcentration accelerates the affinity reaction, redu

14 to which each topology facilitates reactant preconcentration and alignment of PC and NAI via coordin

15 lly, the effects of inorganic ions on sample preconcentration and CE separation were evaluated.

16 acetonitrile, ethyl acetate and water, with preconcentration and derivatization, to produce stable f

17 A useful preconcentration and determination method was proposed f

18 d phase extraction sorbent for the selective preconcentration and determination of AMP in cow milk sa

19 d phase extraction system for the separation/preconcentration and determination of Cd(II), Co(II), Cu

20 ripping voltammetric (DPAdSV) techniques for preconcentration and determination of copper (II) ions i

21 oses a simple and sensitive approach for the preconcentration and determination of graphene oxide (GO

22 GO-SH seems to be ideal for fast and simple preconcentration and determination of heavy metal ions u

23 , as a novel adsorbent, was designed for the preconcentration and determination of Hg (II) ions in fi

24 lication of this sorbent was investigated in preconcentration and determination of low concentrations

25 osed method was successfully applied for the preconcentration and determination of MEL in different r

26 d with HPLC-UV detection for fast extraction-preconcentration and determination of melamine in dairy

27 of a method using solid phase extraction for preconcentration and determination of mercury by cold va

28 nano-sized titanium oxides were applied for preconcentration and determination of Pb(II) in aqueous

29 for the sensitive and selective separation, preconcentration and determination of Pb(II), Cd(II) and

30 e extraction (SPE) method for the separation/preconcentration and determination of some trace metals

31 d can be successfully applied to separation, preconcentration and determination of the pesticides (an

32 illary electrophoresis was optimized for the preconcentration and determination of Zn(II), Cu(II), Mn

33 ical method and applied as a sorbent for the preconcentration and extraction of trace amounts of Pb(2

34 of isotachophoresis (ITP), an electrokinetic preconcentration and extraction technique, onto nitrocel

35 ion of floating organic drop was studied for preconcentration and flame atomic absorption spectrometr

36 ted method is based on heated purge-and-trap preconcentration and gas chromatography/mass spectrometr

37 We report a method based on ion-exchange preconcentration and HPLC/mass spectrometry to measure a

38 sed on a cryogenic trapping which allows VOC preconcentration and provides an adequate pressure allow

39 A novel method for preconcentration and purification of the Alzheimer's dis

40 b(II) ions, the effect of variety of ions on preconcentration and recovery of Pb(II) ions were also i

41 For the first time, the simultaneous online preconcentration and separation of AA, AS and GL using a

42 ymer modified silica fiber was also used for preconcentration and separation of europium metal ion fr

43 chophoresis (ITP), a powerful electrokinetic preconcentration and separation technique, to focus targ

44 Biomarker preconcentration and signal enhancement are two common m

45 -supported bifunctional polymer was used for preconcentration and subsequent quantification of Pu(IV)

46 The high sensitivity obtained with preconcentration and the non-chromatographic separation

47 mn trapping (CPE-CCT) was used for the rapid preconcentration and UV-Vis spectroscopy of beta-caroten

48 edefine regions in the fabric for successive preconcentrations and separations.

49 chromatographic separation, sample clean-up, preconcentration, and derivatization protocols.

50 measures bypassing steps such as extraction, preconcentration, and dilution of the sample.

51 (6 for the extraction system and 10 for the preconcentration approach).

52 Sample preparation and target preconcentration are implemented on a PDMS-based microfl

53 equilibrium while limiting transient sample preconcentration at the base of the solution column.

54 We demonstrated that preconcentration by FASS-ITP could be combined with the

55 The heavy metals were determined after preconcentration by inductively coupled plasma optical e

56 robust to allow its integration with sample preconcentration by isotachophoresis to achieve a limit

57 We achieved high preconcentration by mitigating evaporation induced dispe

58 Preconcentration by repeated trapping and isolation of a

59 HPLC-nanoESI-TOFMS (nUHPLC-nESI-TOFMS) after preconcentration by solid-phase extraction (SPE), thus e

60 munoaffinity extraction, tryptic digest, and preconcentration by solid-phase extraction (SPE).

61 bsorption spectrophotometry (SQT-FAAS) after preconcentration by the help of stearic acid coated magn

62 nsors with BD-UNCD so that dielectrophoretic preconcentration can be performed directly at the biosen

63 The proposed preconcentration-clean-up method is environmentally frie

64 Electrokinetic preconcentration coupled with mobility shift assays can

65 with the help of a complete modeling of the preconcentration cycle.

66 rophotometric detection was proposed for the preconcentration-determination of mercury in water and f

67 A system combining this preconcentration device and a compact detection chamber

68 for designing Micro-Nano-Micro (MNM) fluidic preconcentration device based on ion concentration polar

69 binding phase and a diffusive layer in this preconcentration device, respectively.

70 ology and PC regioisomer are consistent with preconcentration effects, which depend on the number of

71 Preconcentration efficiency of 100% was observed, allowi

72 Several parameters affecting preconcentration efficiency, including sample pH, contac

73 ersatility of the system, and increasing the preconcentration efficiency.

74 The system integrates high-performance preconcentration elements and optical components for flu

75 relative to C18 chains and to study how the preconcentration equilibrium can be controlled by the so

76 ng mL(-1), and 9.6% respectively, with high preconcentration factor (200).

77 ichment factors in the range of 635-644.5 to preconcentration factor (640), confirm the quantitativel

78 limit of detection (LD) of 0.17 ug L(-1) and preconcentration factor (PF) of 136-fold.

79 Preconcentration factor (PF) of 200 and the relative sta

80 High extraction efficiency (90%), a 100-fold preconcentration factor and a detection limit of 5.0ng/L

81 tions of the method, the limit of detection, preconcentration factor and precision as RSD% were found

82 the optimal conditions, LOD (S/N=3) and LOQ, preconcentration factor and RSD% were found to be 1.5ngm

83 Preconcentration factor and sorption capacity of the pro

84 ides higher extraction efficiency and larger preconcentration factor for determination of pesticides

85 t methanol concentration (5% by volume), the preconcentration factor for pyrene into the particle was

86 limit of detection is 2.5 mug L(-1), and the preconcentration factor is 135.

87 Preliminary to this optimization, the preconcentration factor is discussed and a definition is

88 tion (3 s/b) between 0.12 and 1.6 mug L(-1), preconcentration factor of 100, and the relative standar

89 t of quantification (LOQ) of 13.3 mug L(-1), preconcentration factor of 20 and relative standard devi

90 A preconcentration factor of 20 was reached, which was suf

91 Cu using a sample volume of 20mL, yielding a preconcentration factor of 20.

92 Due to the high preconcentration factor of 200, the optimized procedure

93 ion followed by centrifugal ultrafiltration (preconcentration factor of 3000).

94 range of 10-5,000 ug L(-1) (R(2) = 0.9986), preconcentration factor of 50 after eluting with 5 mL of

95 Under the optimized conditions, a preconcentration factor of 65 and detection limit (3S bl

96 extraction efficiency of 99.0 +/- 0.5% and a preconcentration factor of 99 for U.

97 , detection limit, quantification limit, and preconcentration factor of the established method for Cr

98 The preconcentration factor was 12.5.

99 The preconcentration factor was 200 for F-AAS and 100 for ET

100 Furthermore, the preconcentration factor was 299.3 and 137.1 for cadmium

101 ns, the limit of detection was 0.48ngmL(-1), preconcentration factor was 300, the sorption capacity o

102 The preconcentration factor was 60.

103 The preconcentration factor was 80.

104 Preconcentration factor was achieved as 80.

105 The preconcentration factor was calculated and found to be 1

106 n the range of 0.9-2.2 mug L(-1) (n=21), the preconcentration factor was calculated as 200 and the re

107 ve standard deviation was found 8.0% and the preconcentration factor was found as 25 for all analyte

108 (II) and 10 mug L(-1) Pb(II) levels, and the preconcentration factor was found to be 250.

109 The preconcentration factor was found to be 50.

110 The obtained detection limit and preconcentration factor were 0.018 mug L(-1) and 25, res

111 ent with up to ~8 orders of magnitude of the preconcentration factor, thus leading to the unprecedent

112 detection (0.09, 0.06 and 0.04 ug L(-1)) and preconcentration factors (92, 96 and 98) determined for

113 der the optimal experimental conditions, the preconcentration factors in the range of 90-121were obta

114 mg L(-1) of RB and RG were 98% and 99%, with preconcentration factors of 327 and 330, respectively.

115 ood reproducibilities (RSDs13.53%, n=3) with preconcentration factors of 4 and 72 for PHE and PYR, re

116 Preconcentration factors were achieved as 60 for Cu(II),

117 ause of the reduced size of the device, high preconcentration factors were obtained (up to 50-fold).

118 Under optimal conditions, the preconcentration factors were obtained in the range of 2

119 ion for metals 0.49-2.19 mug L(-1), and high preconcentration factors, 39-44, The efficiencies of the

120 d 4.0 to 8.3ngL(-1), respectively, with high preconcentration factors.

121 Here, we explain the challenges of sample preconcentration for CE-based miRNA analyses and introdu

122 after multidimensional liquid chromatography preconcentration from a water extract of Se-rich yeast u

123 (Hg) trace determination based on direct Hg preconcentration from aqueous solution onto a gold nanop

124 e led to smaller-scale extractors that allow preconcentration from small volumes, detection within co

125 s is proposed to monitor the location of the preconcentration frontline.

126 mpling trimethylsilanol in air, as well as a preconcentration gas chromatography/mass spectrometry la

127 rements of delta(15)N and delta(18)O without preconcentration, (ii) eliminating interferences by othe

128 The potential of in-atomizer preconcentration in a DBD atomizer is outlined.

129 the DGT technique: it gives in situ analyte preconcentration in a simple matrix, with more quantitat

130 ntration-polarization (CP)-based biomolecule preconcentration is highly effective in enhancing the de

131 The achieved online analyte preconcentration led to a 480-fold enhancement of detect

132 O4@Chi-GQDs has high potential to be used as preconcentration method and can be reused 7times with hi

133 Novel preconcentration method can successfully be applied in f

134 Solid-phase extraction (SPE) is a general preconcentration method for sample preparation that can

135 In this work, an effective preconcentration method for the extraction and determina

136 A micelle-mediated preconcentration method has been developed for determina

137 A new preconcentration method in which a hydrodynamic pressure

138 solid phase extraction (SPE), separation and preconcentration method of some heavy metal ions, Cd(II)

139 We applied the preconcentration method on ice core samples from the hig

140 for CE-based miRNA analyses and introduce a preconcentration method that can suit CE-based miRNA ana

141 acking is developed as a novel online sample preconcentration method to boost sensitivity with submic

142 y we have described a gentle and noninvasive preconcentration method, based on electrostatic adsorpti

143 mug/kg) and the necessity of implementing a preconcentration method.

144 The method is based on preconcentration of 100.0 mL of sample through 200.0 mg

145 With preconcentration of 60 mL of sample, an enhancement fact

146 nd by functionalization with CMA followed by preconcentration of a new structure of magnetic nanopart

147 In EC-XRF, electrochemical preconcentration of a species of interest onto the targe

148 chitosan, was successfully employed for the preconcentration of acid food dyes from water solutions.

149 ual functions: (i) matrix elimination and/or preconcentration of actinides from complex aqueous sampl

150 reatment providing the merit of simultaneous preconcentration of all target radionuclides.

151 Additionally, the APE involved preconcentration of analytes, thus lowering the limit of

152 an efficient sorbent for the separation and preconcentration of antimony prior to its determination

153 ffecting maghemite synthesis, separation and preconcentration of antimony such as desorption solvent

154 A simple procedure of lossless in situ preconcentration of arsane was developed.

155 w-through extraction cell for separation and preconcentration of arsenate and a gas-diffusion cell fo

156 The method was based on the preconcentration of arsenic by cloud point extraction (C

157 sisted microextraction (DES-VAME) method for preconcentration of As and Sb from environmental waters,

158 hase extraction (D-mu-SPE) was developed for preconcentration of As, Cd, Cr, Co, Sb, Pb and Tl to ind

159 de for lab-on-a-chip applications, primarily preconcentration of biomolecules and water desalination.

160 The method is based on the preconcentration of c-SWNTs and their direct on-filter R

161 The preconcentration of c-SWNTs is performed by microfiltrat

162 A method of separation and preconcentration of cadmium, cobalt, copper, nickel, lea

163 A method of separation and preconcentration of cadmium, copper, nickel, lead and zi

164 A DLLME method for extraction and preconcentration of Cd and Pb from soft drinks and furth

165 resin was synthesized for the separation and preconcentration of Cd(II) and Zn(II) by SPE from bread,

166 Preconcentration of cobalt was carried out with deep eut

167 is used to observe (in situ) the pH-gradient preconcentration of compounds into individual optically

168 lid phase microextraction for separation and preconcentration of copper before its determination by f

169 yleneglycol, was used for the separation and preconcentration of copper(II) and lead(II) ions prior t

170 -GQDs) nanocomposite as an adsorbent for the preconcentration of Cu(II) in Thai food recipes or the s

171 aprotic solvent at pH 6.0 were used for the preconcentration of curcumin from sample matrix.

172 DES-ME) procedure has been developed for the preconcentration of curcumin in food samples prior to it

173 ew microextraction method for separation and preconcentration of curcumin using deep eutectic solvent

174 s evaluated as a sorbent, for extraction and preconcentration of diazinon from aqueous media and cucu

175 ly effective material for the enrichment and preconcentration of europium or other trivalent lanthani

176 ctrodes used for the simultaneous collection/preconcentration of explosive molecular species through

177 an optimization study was undertaken for the preconcentration of five 5'-mononucleotides using the ho

178 The method is based on the preconcentration of GO on a cellulose membrane and their

179 led with ETAAS was proposed for simultaneous preconcentration of heavy metals of lead, arsenic, cadmi

180 CPE) is a well-established technique for the preconcentration of hydrophobic species from water witho

181 e extraction (MISPE) method for simultaneous preconcentration of imazapyr (IMP), imazapic (IMZ) and i

182 lipid bilayer, can provide the isolation and preconcentration of ionizable compounds within the vesic

183 s study suggest that for the pretreatment or preconcentration of landfill leachates, foaming to seque

184 adsorbent for vortex-assisted separation and preconcentration of lead and copper from various food sa

185 first time in the literature for separation-preconcentration of maneb.

186 molecularly imprinted polymer (MMIP) for the preconcentration of melamine, a non-protein nitrogen foo

187 The developed technique can be applied for preconcentration of minute amounts of molecules in liqui

188 Efficient preconcentration of model peptides by SPE and sequential

189 chniques for extraction of field samples and preconcentration of organohalogens-known to be important

190 The synthesized nanocomposite was applied in preconcentration of Pb(2+) ions from various matrices.

191 a new solid extractant for the simultaneous preconcentration of Pb(2+), Cu(2+), Zn(2+) and Cd(2+) io

192 Adsorptive preconcentration of protamine at the membrane/water inte

193 The process involves the preconcentration of proteins from 500 muL of urine using

194 ane can be tuned aiming either for selective preconcentration of Pu from an aqueous matrix or for bul

195 ciency at 3-4 mol L(-1) HNO3, (ii) selective preconcentration of Pu(IV) in the presence of a trivalen

196 ding sample pretreatment, removal of matrix, preconcentration of Pu, and loading on a rhenium filamen

197 ensity ionic liquid and organic solvents for preconcentration of Sb and Sn.

198 It is therefore ideal for the isolation and preconcentration of single charge states of large protei

199 e-facilitated transfer of ions and proteins, preconcentration of species, and analysis of mixtures th

200 as evaluated as a sorbent for extraction and preconcentration of SPI from aqueous and sheep milk samp

201 se microextraction method for separation and preconcentration of sulfadiazine.

202 sorptive extraction (SBSE) was used for the preconcentration of the metabolites.

203 Herein, we apply electrokinetic preconcentration of the neuropeptide onto patterned grap

204 ME) technique allowed the easy and effective preconcentration of the PAHs from the sample matrices.

205 dies confirmed very precise localization and preconcentration of the probe at the mitochondria.

206 Preconcentration of the reduced and permethylated glycan

207 Preconcentration of the sample was accomplished by allow

208 , employing conventional ultrafiltration for preconcentration of the target analytes followed by EMA-

209 First, this method allows the preconcentration of thermodesorbed pollutants on a polym

210 develop a new method for the extraction and preconcentration of trace elements from edible oils via

211 extraction (DMSPE) method for the selective preconcentration of trace lead ions on oxidized multiwal

212 orbent was applied for the determination and preconcentration of trace levels of nitrite in soil, sau

213 ive micro solid phase extraction (duSPE) for preconcentration of trace Pb, Cd, Hg, Co, Ni ions using

214 an efficient adsorbent for both removal and preconcentration of two important carcinogenic xanthine

215 iated extraction procedure was developed for preconcentration of uranium (U) in environmental aqueous

216 Storage and preconcentration of various molecules by molecular scave

217 ed stainless steel meshes for extraction and preconcentration of volatiles (Solid Phase Mesh Enhanced

218 procedure has been developed for extraction/preconcentration of zinc in various edible oils (canola

219 The preconcentration of Zn(2+) from aqueous solution was stu

220 ) magnetic nanoparticle was prepared for the preconcentrations of Co(II) and Hg(II).

221 Preconcentrations of Cu(II), Ni(II) and Pb(II) ions by u

222 e materials and successfully applied for the preconcentrations of Ni(II) and Pb(II) ions from water a

223 olution, hydrophobization by derivatization, preconcentration on C18 cartridge, and LC-MS quantificat

224 Selective preconcentration, on-column focusing, temperature-progra

225 on mass spectrometric technique coupled with preconcentration onto nano- or microparticle-based traps

226 detection at 1.5 ppmv using 10 min of sample preconcentration (onto Molecular Sieve 5A) at a flow rat

227 Preconcentration optimizations including pH, dosage of a

228 cheaper analysis and no necessity of sample preconcentration or derivatization.

229 ent ionization method named superhydrophobic preconcentration paper spray ionization mass spectrometr

230 e LOD to 0.01 ng mL(-1) As employing a 300 s preconcentration period.

231 ed by using tosylactivated magnetic beads as preconcentration platform into a flexible hybrid polydim

232 fabrication technique, it is possible to get preconcentration plugs as high as 5000 fold with an orig

233 requires optimization of the parameters like preconcentration potential, time, stirring, inferences,

234 iologically-modified magnetic particles is a preconcentration procedure commonly integrated in magnet

235 used to find the optimum conditions for the preconcentration procedure through response surface meth

236 y, a simple and rapid solid phase extraction/preconcentration procedure was developed for determinati

237 A clean up-preconcentration procedure was done prior to inject the

238 Effects of important parameters on preconcentration procedure were examined.

239 rix effects for improving the quality of the preconcentration procedure were optimized.

240 ng with the ion of interest (As(3+)), in the preconcentration process.

241 We investigate the preconcentration profiles of a fluorescein and bovine se

242 In addition to purification, IEF preconcentration provides at least a 10-fold increase of

243 tural waters providing easy-handling on-site preconcentration, reagent-free stabilization as well as

244 This preconcentration scheme has been used for some time in m

245 ry method is described for the purification, preconcentration, separation, and characterization of al

246 action method was developed for simultaneous preconcentration-separation of Co(2+), Cr(6+), Hg(2+) an

247 otal analysis system composed of in-line DNA preconcentration, size separation, and single-molecule d

248 composition of extraction solvent, volume of preconcentration solvent, ultrasonic applying time, and

249 In the present paper, a new analytical preconcentration/speciation method for antimony species

250 d using solid-liquid extraction coupled to a preconcentration stage (only for the cooking water), and

251 tion spectrometer (lambda = 1.65 mum) with a preconcentration stage was built and is described here.

252 The preconcentration stage, which employs a carbon molecular

253 the compounds and chloroform was used at the preconcentration stage.

254 This simple electrochemical preconcentration step improves the LOD of energy dispers

255 he use of RuNPs/GC eliminates the need for a preconcentration step in stripping voltammetry, which re

256 Eliminating a preconcentration step reduces contamination potential an

257 nse with the naked eye down to 10 muM when a preconcentration step was used.

258 The optimized conditions for preconcentration step were: the applied potential 70V, b

259 After preconcentration step, atomic absorption spectrometry wa

260 In the first preconcentration step, the sample is mixed with antibody

261 With the addition of a preconcentration step, we have achieved the LOD: 70 ng/L

262 liquefied gas samples without the need of a preconcentration step.

263 reduction of the bismuth citrate during the preconcentration step.

264 re transferred across the interface during a preconcentration step.

265 1 mL) and to carry out experiments without a preconcentration step.

266 Some compounds with low recoveries in the preconcentration steps are now detectable in samples wit

267 les without the need of extensive cleanup or preconcentration steps as required for traditional prote

268 luorescent derivatization, purification, and preconcentration steps during the process.

269 hemical mixtures without sample treatment or preconcentration steps in a total time of 35 min.

270 entrations is presented using two sequential preconcentration steps.

271 A preconcentration system has been developed to determine

272 Additionally, the high performance of the preconcentration system leads to detection limits below

273 , and an enhancement factor of 14875 (25 for preconcentration system, 595 for hydride generation).

274 An automated analyte electroextraction and preconcentration system, which was used as the front end

275 e liquid-liquid microextraction (DLLME) as a preconcentration technique allowed very low detection li

276 ixed-mode-solid-phase extraction (MM-SPE) as preconcentration technique and mixed-mode liquid chromat

277 Here we describe a microfluidic DNA preconcentration technique that does not require an exte

278 in this work as an electrokinetically based preconcentration technique, allowing injection of up to

279 e this problem by combining DQAMmiR with the preconcentration technique, isotachophoresis (ITP).

280 Additionally, an online preconcentration technique, reversed electrode polarity

281 Here, we present a novel preconcentration technique--the coupling of a headspace

282 mplified sample stacking as an online sample preconcentration technique.

283 In-line preconcentration techniques are used to improve the sens

284 These digital isolation and preconcentration techniques will permit the same isolati

285 y Osteryoung square-wave voltammetry after a preconcentration time of 480 s.

286 ) were respectively used as pretreatment and preconcentration tools to allow trace determination of s

287 oton conduit and gas cell with a custom-made preconcentration tube and an in-line UV-converter device

288 The first is a preconcentration unit providing the VOC recovery.

289 We present a new preconcentration unit, "Stheno II", coupled to a tunable

290 S of the VOC previously transferred from the preconcentration unit.

291 loped a macro-to-microscale interface called preconcentration using liquid intake by paper (P-CLIP).

292 Through adsorptive analyte preconcentration, vacuum GC, photoionization detectors,

293 ation with Eu(3+) via cyclic voltammetry and preconcentration voltammetry.

294 Under optimal conditions, four times the preconcentration was achieved with the use of only 1.2 m

295 To increase detection sensitivity, analyte preconcentration was conducted in parallel with the sepa

296 MG preconcentration was linear up to a volume of 40 mL, obt

297 roved detection limit, independent of target preconcentration, was demonstrated for detection of Esch

298 The limits of SAs detection using preconcentration were of 0.02-0.03 mug mL(-1).

299 e preparation, such as sample extraction and preconcentration, which is required in complex samples w

300 absorption spectrometry (SQT-FAAS) after the preconcentration with deep eutectic solvent-based liquid