使用红外光电二极管电极分析废液中的铅离子。
Analysis of Lead Ions in a Waste Solution Using Infrared Photo-Diode Electrode.
作者信息
Ly Suw Young, Lee Hyun Kuy, Kwak Kyu Ju, Ko Jun Seok, Lee Jeong Jae, Cho Jin Hee, Kim Ki Hong, Kim Min Seok, Lee So Jung
机构信息
111Biosensor Research Institute in Seoul National University of Technology, Seoul, 139-743 Korea.
211Department of Chemistry, Yonsei University, Seoul, 120-749 Korea.
出版信息
Toxicol Res. 2008 Sep;24(3):227-233. doi: 10.5487/TR.2008.24.3.227. Epub 2008 Sep 1.
To detect lead ions using electrochemical voltammetric analysis, Infrared Photo-Diode Electrode (IPDE) was applied via cyclic and square wave stripping voltammetry. Lead ions were deposited at 0.5 V (versus Ag/AgCl) accumulation potential. Instrumental measurements systems were made based on a simple and compact detection system. The stripping voltammetric and cyclic voltammetric optimal parameters were searched. The results yielded a cyclic range of 40∼240 mgl Pb(II) and a square wave stripping working range of 0.5∼5.00 mgl Pb(II). The relative standard deviation at 2 and 4 mgl Pb(II) was 0.04% and 0.02% (n = 15), respectively, using the stripping voltammetric conditions. The detection limit was found to be 0.05 mgl with a 40 sec preconcentration time. Analytical interference ions were also evaluated. The proposed method was applied to determine lead ions in various samples.
为了用电化学伏安分析法检测铅离子，通过循环伏安法和方波溶出伏安法应用了红外光电二极管电极（IPDE）。铅离子在0.5 V（相对于Ag/AgCl）的富集电位下沉积。仪器测量系统基于一个简单紧凑的检测系统构建。探索了溶出伏安法和循环伏安法的最佳参数。结果得到循环伏安法中铅（II）的线性范围为40∼240 mg/L，方波溶出伏安法中铅（II）的工作范围为0.5∼5.00 mg/L。在溶出伏安法条件下，2 mg/L和4 mg/L铅（II）的相对标准偏差分别为0.04%和0.02%（n = 15）。在预富集时间为40秒时，检测限为0.05 mg/L。还评估了分析干扰离子。所提出的方法被应用于测定各种样品中的铅离子。
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