Combining chemical reduction with an electrochemical technique for the simultaneous detection of Cr(VI), Pb(II) and Cd(II)

	Combining chemical reduction with an electrochemical technique for the simultaneous detection of Cr(VI), Pb(II) and Cd(II)
	Li J ; Zhang JC ; Wei H ; Wang E
刊名	analyst
	2009
卷号	134 期号:2 页码:273-277
关键词	BISMUTH-FILM ELECTRODES ATOMIC-ABSORPTION-SPECTROMETRY ANODIC-STRIPPING VOLTAMMETRY FLOW-INJECTION ANALYSIS CARBON-PASTE ELECTRODE CHROMIUM CR(III) ELECTROANALYSIS POTENTIALITIES ADSORPTION
ISSN号	0003-2654
通讯作者	wang e
中文摘要	this work herein reports the approach for the simultaneous determination of heavy metal ions including cadmium (cd(ii)), lead (pb(ii)), and chromium (cr(vi)) using a bismuth film electrode (bfe) by anodic stripping voltammertry (asv). the bfe used was plated in situ. due to the reduction of cr(vi) with h2o2 in the acid medium, on one hand, the cr(iii) was produced and cr(vi) was indirectly detected by monitoring the content of cr(iii) using square-wave asv. on the other hand, pb(ii) was also released from the complex between pb(ii) and cr(vi). furthermore, the coexistence of the cd(ii) was also simultaneously detected with pb(ii) and cr(vi) in this system as a result of the formation of an alloy with bi. the detection limits of this method were 1.39 ppb for cd(ii), 2.47 ppb for pb(ii) and 5.27 ppb for cr(vi) with a preconcentration time of 120 s under optimal conditions (s/n = 3), respectively. furthermore, the sensitivity of this method can be improved by controlling the deposition time or by using a cation-exchange polymer (such as nafion) modified electrode.
收录类别	SCI
语种	英语
WOS记录号	WOS:000262849700011
公开日期	2010-05-27
内容类型	期刊论文
源URL	[http://202.98.16.49/handle/322003/12207]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Li J,Zhang JC,Wei H,et al. Combining chemical reduction with an electrochemical technique for the simultaneous detection of Cr(VI), Pb(II) and Cd(II)[J]. analyst,2009,134(2):273-277.
APA	Li J,Zhang JC,Wei H,&Wang E.(2009).Combining chemical reduction with an electrochemical technique for the simultaneous detection of Cr(VI), Pb(II) and Cd(II).analyst,134(2),273-277.
MLA	Li J,et al."Combining chemical reduction with an electrochemical technique for the simultaneous detection of Cr(VI), Pb(II) and Cd(II)".analyst 134.2(2009):273-277.