流动注射分析测定生活饮用水中挥发酚

Determination of Phenol in Drinking Water by Flow Injection Analysis

目的采用4-氨基安替吡啉分光光度法建立流动注射分析,测定生活饮用水中挥发酚。方法生活饮用水在线蒸馏,冷凝和比色均由QC8500流动注射分析仪自动完成。结果该方法最低检测质量浓度为1.14μg/L,RSD为1.86%～3.06%,回收率在94.2%～99.5%之间。同一水样分别采用两种不同的方法进行测定。检测结果经统计学处理,差异无统计学意义(t=0.632,P>0.05)。结论该方法前处理简单,分析周期短,方法准确度、精密度好,自动化强度高,安全可靠,适用于大批量样品分析。

Objective To establish flow injection analysis for determination of volatile phenols in drinking water by using 4-amino spectrophotometry diantipyryl.Methods Drinking water samples were treated by online distillation,condensation and colorimetric determination were automatically finished by QC8500 flow injection analyzer.Results The minimum detectable concentration was 1.14 μg / L,the relative standards deviation was 1.86%-3.06%, recovery rate was 94.2%-99.5%,respectively.The same water sample was tested using two different methods,which the detection results showed that there was no no significant difference（t =0.632,P 0.05）.Conclusion The method has the characteristics of simplicity,accuracy,high automation and reliability,it is suitable for large amount samples analysis.