Determination of selenium in hair by material microwave digestion-atomic fluorescence spectrometry

VernacularTitle:微波消解-原子荧光光谱法测定发硒
Author: Yuhong CHEN ; Haihong CHEN ; Yiping WANG
Keywords: Hair; Selenium; Reference standards; Material microwave digestion; Atomic fluorescence spectrometry
From: Chinese Journal of Endemiology 2017;36(8):598-601
CountryChina
Language:Chinese
Abstract: Objective To determine the hair selenium level by material microwave digestion-atomic fluorescence spectrometry. Methods The selenium in hair was determined by hydride atomic fluorescence spectrometry after microwave digestion, and the method was improved by exploring the test conditions. The linear relationship and linear range of the standard curve, the detection limit, the precision and the accuracy of the sample determination were implemented under the optimized conditions. The selenium value of standard material of human hair was tested by material microwave digestion-atomic fluorescence spectrometry. Results The selenium detection limit of material microwave digestion-atomic fluorescence spectrometry was 0.095 μg/g, the correlation coefficient of standard curve was 0.9997, the relative standard deviation was 1.32% - 2.48%, the average recovery rate was 93.4% - 98.2%, and the selenium value of standard material of human hair was in the standard value range of uncertainty, which met the requirements. Conclusion The method is simple, accurate and precise, and it is an accurate and reliable method for determination of selenium in hair.