摘要
目的建立不添加基体改进剂稀释后直接进样测定尿中锰石墨炉原子吸收测定方法。方法尿样经1％硝酸5倍稀释后直接测定，使用塞曼进行背景校正。结果本方法测定尿中锰的线性范围为5．0～60．00μg／L（以尿液计），相关系数为〉0．995，检出限为1．5μg／L，定量下限为5．0μg／L。方法的批内精密度为1．1％～4．3％，批间精密度为3．3％～7．0％，平均回收率为102．6％。样品在室温、4℃、-8℃、-35℃的条件下均可以保存14d。结论本方法适用于尿中锰含量的测定。
Objective To establish a method for the determination of manganese in urine by graphite furnace atomic absorption spectrometry（AAS） without the use of matrix modifier. Methods The urine samples were 5 times diluted with 1% nitric acid then directly determined by AAS. Zeeman was used for background correction. Results The linear range for determination of manganese in urine was 5-60 μg/L （urine）. The correlation coefficient was greater than 0.995 with the detection limit of 1.5 μLg/L and with the lower limit of quantification of 5.0 μg/L. The relative standard deviations （RSDs） of within-run precision was between 1.1%- 4.3%, the RSDs of between-run precision was between 3.3%-7.0%. The average recovery was 102.6%. The samples can be stored for 14 days at room temperature, 4℃, -8 ℃ and -35℃. Conclusion The method is feasible for determination of manganese in urine.
作者
林怡然
李添娣
张文
贠建培
刘奋
黄先青
Lin Yiran;Li Tiandi;Zhang Wen;Yun Jianpei;Liu Fen;Huang Xianqing(Shenzhen Prevention and Treatment center for Occupational Diseases,Shenzhen 518001,China)
出处
《中华劳动卫生职业病杂志》
CAS
CSCD
北大核心
2018年第7期535-537,共3页
Chinese Journal of Industrial Hygiene and Occupational Diseases
基金
国家卫生部职业卫生标准委员会卫生标准制（修）订项目（20120210）
深圳市科技计划项目（JCYJ20160429090813380）
