title: The determination of trace lead in drinking water by flow injection spectrophotometry.
abstract: Lead is the non-essential trace element in the human body, and it has been confirmed that drinking water is one of the sources of lead in human body. In the research, based on the sensitive colour reaction of lead with I(-)-EV(+)-PVA, a simple, sensitive, accurate and portable method for the determination of trace lead in drinking waters was proposed. Chemicals and physicals had been optimized in detail. The apparent molar absorption coefficient was up to 7.4x10(5) mol L(-1) cm(-1). The developed method provided a linearity range over 5-80 microg L(-1). The regression deviation was between 0.71% and 2.33%. The 3sigma detection limit was 0.9 microg L(-1). Close to the quantitation limit for the analyte the relative standard deviation was 1.10% (n=10) at 40 microg L(-1). The method developed here for analysis of lead yielded results that were comparable with those of the GFAAS.
authors: College of Architecture and Environment, Sichuan University, Sichuan, Chengdu, People's Republic of China.
authors: Shijun
authors: S
authors: Dai
authors: Xinshen
authors: X
authors: Zhang
authors: Lingyun
authors: L
authors: Yu
authors: Yujie
authors: Y
authors: Yang
mesh_terms: D000818:Animals; D002138:Calibration; D017022:Flow Injection Analysis / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D007854:Lead / Q000032:analysis*; D057230:Limit of Detection; D015203:Reproducibility of Results; D013053:Spectrophotometry / Q000295:instrumentation / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
chemical_list: D014874:Water Pollutants, Chemical; D007854:Lead