摘要
通过考察显色剂浓度、显色体系p H值及优化仪器参数,建立了全自动流动注射分析仪测定水体中挥发酚含量的分析方法。结果表明,挥发酚的质量浓度在0~0.200mg·L^(-1)范围内与对应的信号强度呈线性关系,相关系数为0.9999,方法检出限为0.001mg·L^(-1),测定下限为0.004mg·L^(-1)。通过对水质挥发酚标准物质分析,测定结果的相对标准偏差(n=6)为0.78%~2.13%,相对误差为-0.60%~2.68%;同时对实际样品进行加标回收实验,加标回收率为94.0%~105%。本方法具有自动进样、分析速度快、绿色环保等优点,可以满足各种水体中挥发酚含量的快速测定需求。
The analysis method for determining the content of volatile phenols in water using a fully automatic flow injection analyzer was established by examining the concentration of color reagents,the pH value of the color system,and optimizing instrument parameters.The results showed that there was a linear relationship between the mass concentration of volatile phenols and the corresponding signal intensity in the range of 0-0.200mg·L^(-1),with a correlation coefficient of 0.9999.The method detection limit was 0.001mg·L^(-1),and the lower limit of determination was 0.004mg·L^(-1).By analyzing the standard substances of volatile phenols in water quality,the relative standard deviation(n=6)of the measurement results was in the range of 0.78%-2.13%,and the relative error was in the range of-0.60%-2.68%.At the same time,spiked recovery experiments were carried out on actual samples,and the spiked recovery rate was 94.0%-105%.This method has the advantages of automatic sampling,fast analysis speed,and environmental friendliness,and can meet the rapid determination needs of volatile phenol content in various water bodies.
作者
李小辉
王娟
冯兰慧
王曼曼
陈亚杰
LI Xiao-hui;WANG Juan;FENG Lan-hui;WANG Man-man;CHEN Ya-jie(Key Laboratory of Precious Metals Analysis and Exploration Technology of Ministry of Natural Resources,Geological Hazard Prevention and Control Center of Henan Geological Bureau,Zhengzhou 450012,China)
出处
《化学工程师》
2025年第9期23-26,共4页
Chemical Engineer
基金
国家重点研发计划项目(2019YFC1804805)
豫地矿青科创项目([2020]9号)。
关键词
全自动流动注射分析仪
水体
挥发酚
automatic flow injection analyzer
water sample
volatile phenol
