nano-TiO_2修饰玻碳电极微分脉冲阳极溶出伏安法测定全血中砷含量  

Determination of arsenic by using differential pulse anodic stripping voltammetry on the nano-TiO_2 film modified glass-carbon electrode

作　　者：黄亚北[1] 许希海[1] 丁新平[1] 王士军[1] 訾言勤[2] 

机构地区：[1]淮北职业病防治院,安徽淮北235000 [2]淮北师范大学,安徽淮北235000

出　　处：《中国卫生检验杂志》2011年第5期1100-1102,共3页Chinese Journal of Health Laboratory Technology

摘　　要：目的:建立一种电化学测定全血中砷的方法。方法:采用微波消解法处理全血样品,在优化测定条件下以微分脉冲阳极溶出伏安法测定砷的含量。结果:砷的检出限为0.37μg/L;砷标准溶液在1.0μg/L^15.0μg/L范围内线性良好,相关系数为0.998;测定含5.0μg/L As标准溶液的相对标准偏差为2.0%。样品加标回收率为95%~97%。结论:该方法灵敏度、准确度高;操作方便快速;具有较低的检出限,能满足测定全血中砷含量的检测工作。Objective：To establish a method for simultaneous determination of arsenic in blood by electrochemical method with microwave digestion.Methods： Under the proposed conditions,arsenic was determined in blood by differential pulse anodic stripping voltammetry（DPASV） technique with microwave digestion.Results： The detection limits were 0.37 μg/L for arsenic.The liner calibration curves for arsenic was respectively with in the range of 1.0 μg/L^15.0 μg/L,and their correlative coefficients was 0.998.The RSD for arsenic at 5.0 μg /L was 2.0%.The standard recovery rates of spiked samples were in the range of 95%~97% for arsenic.Conclusion： The method is simple,rapid,accurate,sensitive and of low detection limits.DPASV technique,new,rapid,simple,selective and inexpensive for qualitative and quantitative determinations of arsenic,which was successfully applied.

关 键 词：微分脉冲阳极溶出伏安法 修饰电极 微波消解 砷 

分 类 号：O657.13[理学—分析化学]