尿中汞的热分解齐化原子吸收法  

Determination of mercury in urine by thermal decomposition amalgamation atomic absorption spectrometry

作　　者：刘祖强[1] 邵鹏[1] 白洁冰[1] 李红华[1] 钟伟燕[1] 

机构地区：[1]广东省深圳市宝安区疾病预防控制中心理化检验科,518101

出　　处：《职业与健康》2012年第21期2616-2617,2620,共3页Occupation and Health

摘　　要：目的直接使用测汞仪,建立测定尿汞含量的新方法。方法采用热分解齐化法原子吸收法,直接测定尿中汞的含量。结果回归方程:A=0.046 62C;相关系数:R=0.999 9;线性范围0.20～12.5 ng;精密度1.2%～6.5%;样品加标回收率为92.8%;对尿汞标准物质测定9次,平均值为(32.0±0.8)μg/L,结果均在证书给出的不确定度范围内;对实际样品测定,进样量0.1 ml时,其结果均<0.46μg/L。结论该方法操作简便快速,各项指标可满足尿汞的测定。[Objective] To establish a new method for determination of urinary mercury content by using mercury analyzer directly. [Methods]Thermal decomposition amalgamation atomic absorption spectrometry was adopted for direct determination of urinary mercury content.[Results]Regression equation A=0.046 62C;correlation coefficient R=0.999 9;linear range was between 0.20-12.5 ng;precision was 1.2%-6.5%;recovery was 92.8%.Urine mercury standard substances were detected 9 times with mean of（32.0±0.8） μg / L.All results were within the uncertainty range given by certificate.The actual detection of samples showed all results 0.46 μg/L with injection volume of 0.1 ml.[Conclusion] The method is simple and rapid.All indicators meet the requirement of urinary mercury determination

关 键 词：直接测汞仪 尿汞 热分解齐化原子吸收法 

分 类 号：R135[医药卫生—劳动卫生]