[石墨炉原子吸收光谱法直接测定尿液中的锰]
[Direct determination of manganese in urine by Graphite Furnace Atomic Absorption Spectrometry].
作者信息
Lin Y R, Li T D, Zhang W, Yun J P, Liu F, Huang X Q
机构信息
Shenzhen Prevention and Treatment center for Occupational Diseases, Shenzhen 518001, China.
出版信息
Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi. 2018 Jul 20;36(7):535-537. doi: 10.3760/cma.j.issn.1001-9391.2018.07.016.
To establish a method for the determination of manganese in urine by graphite furnace atomic absorption spectrometry (AAS) without the use of matrix modifier. The urine samples were 5 times diluted with 1% nitric acid then directly determined by AAS. Zeeman was used for background correction. The linear range for determination of manganese in urine was 560 μg/L (urine) . The correlation coefficient was greater than 0.995 with the detection limit of 1.5 μg/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 ℃. The method is feasible for determination of manganese in urine.
建立一种不使用基体改进剂的石墨炉原子吸收光谱法（AAS）测定尿中锰的方法。尿样用1%硝酸稀释5倍后直接用AAS测定。采用塞曼效应进行背景校正。尿中锰的测定线性范围为560μg/L（尿液）。相关系数大于0.995，检测限为1.5μg/L，定量下限为5.0μg/L。批内精密度的相对标准偏差（RSD）在1.1%4.3%之间，批间精密度的RSD在3.3%~7.0%之间。平均回收率为102.6%。样品在室温、4℃、-8℃和-35℃下可保存14天。该方法用于尿中锰的测定是可行的。
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