| Improvement on Simultaneous Determination of Cr(III) and Cr(VI) by Capillary Electrophoresis and Chemiluminescence Detection |
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| 引用本文： | Wei DENG,Wei Ping YANG,Zhu Jun ZHANG*,Xiao Rong LI College of Chemistry and Materials Science,Shaanxi Normal University,Xi抋n 710062. Improvement on Simultaneous Determination of Cr(III) and Cr(VI) by Capillary Electrophoresis and Chemiluminescence Detection[J]. 中国化学快报, 2003, 14(3) |
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| 作者姓名： | Wei DENG Wei Ping YANG Zhu Jun ZHANG* Xiao Rong LI College of Chemistry and Materials Science Shaanxi Normal University Xi抋n 710062 |
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| 作者单位： | Wei DENG，Wei Ping YANG，Zhu Jun ZHANG*，Xiao Rong LI College of Chemistry and Materials Science，Shaanxi Normal University，Xi抋n 710062 |
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| 基金项目： | This study was supported by the National Natural Science Foundation of China (No. 20175039). |
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| 摘 要： | Chromiumexistsindifferentoxidationstatesingroundwater,industrialwastewater,seawater,andsoilofourenvironment1,2.Chromium(III)isanessentialtraceelementforhumans,requiredforthemaintenanceofnormalglucose,cholesterol,andfattyacidmetabolism.Ontheotherhand,watersolublechromium(VI),intheformCr2O72-orCrO42-,ishighlyirritatingandtoxictohumansandanimals3.Itsacutetoxiceffectsincludeanimmediatecardiovascularshockandlatereffectsonkidney,liver,andblood-formingorgans.Therefore,itisnecessaryforriskassessme…
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Improvement on Simultaneous Determination of Cr(III) and Cr(VI) by Capillary Electrophoresis and Chemiluminescence Detection |
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| Wei DENG,Wei Ping YANG,Zhu Jun ZHANG,Xiao Rong LI. Improvement on Simultaneous Determination of Cr(III) and Cr(VI) by Capillary Electrophoresis and Chemiluminescence Detection[J]. Chinese Chemical Letters, 2003, 14(3) |
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| Authors: | Wei DENG Wei Ping YANG Zhu Jun ZHANG Xiao Rong LI |
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| Abstract: | A sensitive method for the simultaneous determination of Cr(III) and Cr(VI) using in-capillary reaction capillary electrophoresis separation and chemiluminescence detection was developed. The procedures were designed as follows: The sample, hydrochloric acid and sodium hydrogen sulfite solution segments were injected sequentially into the capillary. The reaction of Cr(VI) reduced to Cr(III) by HSO3- occurred inside the capillary after applying the running voltage. According to the migration time difference of both Cr(III) ions moving towards to the cathode (detection end), they could be separated and determined. The limits of detection for chromium(III) and chromium(VI) (S/N = 3) were 6.010-13 mol/L (12 zmol) and 1.910-11 mol/L (380 zmol), respectively. |
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| Keywords: | Chemiluminescence in-capillary reaction chromium capillary electrophoresis. |
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