摘要
介绍了用石墨炉(无火焰)原子吸收光谱法直接测定饮用水、地表水及废水中痕量钼的原理、过程,讨论了实验条件的优化、线性范围的选择,并对检出限、精密度和准确度做出评估。对钼标准物质(编号GBW199041)进行测定,测定结果与标准值相吻合。该方法测定的线性范围为0.0047mg/L～0.1000mg/L,检测限为0.0001 mg/L,相对标准差为0.8%～1.6%,回收率为101%～107%,具有线性范围宽,简单,快速,准确等特点,在饮用水、地表水及废水中痕量钼的检测中具有很好的适用性。
Based on the presentation on the determination principle of Molibdenium in dringkeing water , ground water and waste water with Graphite oven （none-time） Atomic absorption spectrometry and its operating process, optimization of analytic conditions and selection of linerity range were discussed, furthermore the determination range, accuracy and precision were evaluated, the determination result of standard substance of Molibdenium （No.GBW199041） shows that the test value was uniform in standard value, and linerity range, determination range, relative standard deviation, extraction ratio were 0.0047 mg/L - 0.1000 mg/L, 0.0001 mg/L, 0.8% - 1.6%, 101% - 107% respectively, it is saied that with the merits of wide linerity range, simpleness in operation, speediness, accuray, Graphite oven （none-time） Atomic absorption spec- trometry showed the applicability in determination of trace Molibdenium in dringkeing water, ground water and waste water.
出处
《辽宁城乡环境科技》
2007年第2期47-49,共3页
Liaoning Urban and Rural Environmental Science & Technology
关键词
水
钼
石墨炉原子吸收光谱法
痕量分析
environment protection planning risk to human health monetizing assessment cost and benefits
