文具中可溶性铅和镉的测定

Determination of Dissoluble Lead and Cadmium in Stationery

采用火焰原子吸收光谱法测定了学生文具中可溶性铅、镉的含量。铅在0.00—10.00μg·mL-1之间,镉在0.00—4.00μg·mL-1之间具有良好的线性关系。方法的RSD≤4.13%。回收率在93.7%—104.5%之间。方法快速简便,结果准确,可用于文具中可溶性铅、镉含量的监测。

Contents of dissoluble lead and cadmium in stationery were determined by atomic absorption spectrometry. Both lead and cadmium show a good linear relationship over the range of 0. 00-10. 00μg · mL^-1 for lead and 0. 00-4. 00μg · mL ^-1 for cadmium with RSD lower than 4.13% and recovery of 93.7%-104.5%. The method is simple and accurate,and can be used as monitor method of dissoluble lead and cadmium in stationery.