tailieunhanh - Bismuth film electrode for stripping voltammetric determination of blood lead and preliminary assessment of blood lead level in the residents at canh duong village, thua thien hue province

Bismuth film electrode (BiFE) of less environmentally concern was developed to determine blood lead by differential pulse - anodic stripping voltammetry (DP-ASV). The lead determination gained high precision (RSD ). The ASV using BiFE prepared in situ were applied for determination of blood lead and 24-hour urine lead of suspected and control groups of the residents at Canh Duong village, Thua Thien Hue province. | Journal of Chemistry Vol. 45 6A P. 311 - 317 2007 BISMUTH FILM ELECTRODE FOR STRIPPING VOLTAMMETRIC DETERMINATION OF BLOOD LEAD AND PRELIMINARY ASSESSMENT OF BLOOD LEAD LEVEL IN THE RESIDENTS AT CANH DUONG VILLAGE THUA THIEN HUE PROVINCE Received 15 October 2007 NGUyEN VAN Hop1 DANG VAN KHANH2 CHU DINH KINH3 HOANG THO TIN4 TU VONG NGHI 4 Department of Chemistry Hue College of Sciences Hue University 2Center for Drug and Cosmetic Quality Control Thua Thien Hue province 3Institute of Chemistry Vietnamese Academy of Science and Technology 4Faculty of Chemistry Hanoi University of Natural Science VNU SUMMARy Bismuth film electrode BiFE of less environmentally concern was developed to determine blood lead by differential pulse - anodic stripping voltammetry DP-ASV . The lead determination gained high precision RSD n 2 and low detection limit ppb that were not worse than those on mercury film electrode MFE . The acurracy of the lead dertermination recovery 98 - was good agreement with GF-AAS determination p . The ASV using BiFE prepared in situ were applied for determination of blood lead and 24-hour urine lead of suspected and control groups of the residents at Canh Duong village Thua Thien Hue province. The blood lead level in the suspected group fishermen fishing-net repairers and weavers holding small lead pieces in their mouth during fishing-net weaving were jg dL mean SD n 30 higher than that of the control group mean SD Jg dL n 10 . For both groups 37 out of 40 blood samples had lead level higher than WHO recommended level 10 jg dL . This was evidence on high lead exposure in the suspected group in the study area. Difference between the lead level in 24-hour urine of the suspected group and control group was statistically insignificant p . Correlation between the blood lead and 24-hour-urine lead in the residents under study was not found R . Keywords Bismuth electrode Blood lead Stripping voltammetry. I - .