砷快速检测盒与原子荧光法测定水砷含量结果对比

目的　比较水砷快速检测试剂盒(速测法)和氢化物发生-原子荧光光谱法(HG-AFS)测定饮水中砷含量的可靠性和应用价值。方法　用速测法和HG-AFS测定水样747份,将2种方法检测结果进行对比,数据处理应用SPSS 10.0软件进行配对设计的秩和检验。结果　2种方法测得的结果总体差异无统计学意义(u=1.32,P0.05),但速测法结果在0.03～0.05 mg/L 之间与HG-AFS结果差异有统计学意义(u=2.42,P0.05)。结论　HG-AFS稳定可靠,速测法操作简单,可以在现场应用。用速测法初步筛选,用HG-AFS对速测法结果含砷定量分析,既可减少工作量,又能保证分析结果的可靠性,完全能满足地方性砷中毒工作的需求。

Comparison between rapid arsenic test and HG-AFS in the detection of arsenic in drinking water

Objective The study was conducted to compare the reliability and practical value of rapid arsenic test(rapid method) with that of hydride generation atomic fluorescence spectrometry method(HG-AFS) for detection of arsenic content in drinking water.Methods A total of 747 samples of drinking water were detected by the rapid method and HG-AFS method, and the results of both methods were compared;rank sum test designed by SPSS 10.0 was conducted to process the data.Results There was not significant difference between the general results achieved by the two methods(u=1.32, P>0.05), while there was significant difference between 0.03-0.05 mg/L among the results achieved by the two methods(u=2.42,P<0.05).Conclusion HG-AFS method is stable and reliable, while the rapid method is simple and can be used just in scene.Use the rapid method for initial screening and then HG-AFS to detect the arsenic content of the samples, then workload can be reduced while the reliability can be ensured, thus the demand of prevention and treatment of endemic arsenism can be satisfied.