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[目的]对居住区大气中铍的卫生检验标准方法-桑色素荧光分光光度法进行优化改良。[方法]按照国家环境污染物监测方法标准制修订技术导则,对我国现行的居住区大气中铍的卫生检验标准方法-桑色素荧光分光光度法进行了优化改良,并对改良后的方法进行方法学评价。[结果]方法的检出限为0.05ng/ml,测定下限为0.2ng/ml,测量范围为0.0002～0.005μg/ml,对空气中铍的测定范围为0.002～0.05μg/m3(采样体积为1m3)。相对标准偏差分别为2.5%～4.2%(n=6)。回收率为98.0～106.0%。[结论]改良后的方法比原标准方法更加简便易操作,提高了方法灵敏度、测定的精密度和准确度。
[Objective] To optimize and improve the standard of hygiene examination of beryllium in living atmosphere - morin fluorescence spectrophotometry. [Method] According to the Technical Guidelines for National System of Environmental Pollutant Monitoring, the standard method for hygienic examination of beryllium in residential area was optimized and improved by the method of fluorescence spectrophotometry of morin, and the improved method was carried out Methodological evaluation. [Result] The detection limit of the method was 0.05ng / ml, the detection limit was 0.2ng / ml, the measurement range was 0.0002 ~ 0.005μg / ml, and the determination range of beryllium in the air was 0.002 ~ 0.05μg / m3 1m3). The relative standard deviations were 2.5% ~ 4.2% (n = 6). The recovery rate was 98.0 ~ 106.0%. [Conclusion] The improved method is more simple and easier to operate than the original standard method, which improves the sensitivity of the method, the precision and accuracy of the determination.