连续流动分析仪测定地表水中挥发酚的方法探讨

使用连续流动分析仪测定地表水中挥发酚,实验结果表明在测定地面水时,该方法线性关系良好,方法检出限为1.2μg/L,方法稳定性好,准确度和精密度高,加标回收率符合要求,分析速度快,适合大批量测定地表水中的挥发酚。同时探讨了该方法在实际样品分析工作中的一些应用问题,如基线的波动与稳定、高低浓度样品交叉测定的影响等,并提出了解决办法。

A Discussion about the Methods in Determining Volatile Phenols in Surface Water by Continuous Flow Analyzer

The experiments show that when used for determining the volatile phenols in the surface water, the continuous flow analyzer is stable with high accuracy and precision. Its linear correlation is good, and the detection limit is 1.2pg/L. Its satisfying recovery and fast speed of analysis make the equipment suitable for large - batch detecting the volatile phenols in the surface water. In addition, some application problems, such as baseline fluctuations and stability, low- and high -concentrated sample contamination are discussed and the relevant solutions are given.