【摘要】 [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。更多还原

【Abstract】 [Objective]To improve the hygenic detecting method for the beryllium in air of residential areas.[Methods]According to the Technical Guidelines for Development and Revision of National Environmental Monitoring Methods and Standards,the current hygienic detecting method for the beryllium in air of residential areas was optimized and evaluate.[Results]The detection limit of improved method was 0.05ng/ml,and the limit of determination was 0.2ng/ml.The linear range was 0.000 2-0.005μg/ml.For 1 m3 air,the determination range was 0.002-0.05μg/m3.The relative standard deviations were 2.5%-4.2%(n=6).The recoveries were from 98.0% to 106.0%.[Conclusion]The improved method is easier with better sensitivity,accuracy and precision.更多还原