人尿中铜等金属元素含量的横向加热石墨炉原子吸收测定法  

Determination of Copper,Manganese and Cadmium in Human Urine by Transversely Heated GFAAS

作　　者：杨金玲[1] 公维磊[1] 赵艳霞[1] 张建萍[1] 王长芹[1] 胡健伟[1] 

机构地区：[1]济宁医学院公共卫生学院,山东济宁272013

出　　处：《环境与健康杂志》2009年第6期534-535,共2页Journal of Environment and Health

摘　　要：目的建立人尿中铜、锰、镉含量的横向加热石墨炉原子吸收测定方法。方法尿样经酸消解后,采用基体改进剂,扣除背景吸收,探讨尿液中铜、锰、镉含量的横向加热石墨炉原子吸收法的最佳测定条件。结果5g/L的硝酸镁做为铜和锰的基体改进剂,5g/L的磷酸二氢铵和0.3g/L的硝酸镁做为镉的基体改进剂,在选定的测定条件下,方法检出限为0.028～0.060μg/L,精密度为1.1%～5.1%,回收率为94.2%～107.5%。结论该方法简单、准确、灵敏,适用于人尿中铜、锰、镉测定。Objective To establish a method for determination of copper, manganese and cadmium in human urine by transversely heated GFAAS. Methods Matrix modifiers were used and background absorption was deducted, copper, manganese and cadmium in human urine were determined by transversely heated GFAAS after digestion. Results 5 g/L Mg （NO3）2 was taken as the matrix modifier when copper and manganese were determined and 0.3 g/L Mg （NO3）2 and 5 g/L NH4H2PO4 was taken as the matrix modifier when cadmium was determined. Under the designed standard conditions, the detection limits of copper, manganese and cadmium were 0.028-0.060 μg/L; RSDs were 1.1%-5.1%; Recovery rates were 94.2%-107.5%. Conclusion The method is simple, accurate and sensitive, and is applicable to the determination of copper, manganese and cadmium in human urine.

关 键 词：分光光度法 原子吸收 尿 铜 锰 镉 

分 类 号：O657.3[理学—分析化学]