双通道原子荧光法同时测定地表水中砷和汞含量
Simultaneous Determination of Arsenic and Mercury in Surface Water by Dual Channel Atomic Fluorescence Method
闫素华 1陈纪江1
作者信息
- 1. 忻州市水务有限责任公司,山西 忻州 034000
- 折叠
摘要
建立了双通道原子荧光法同时测定地表水中砷和汞含量的方法.采用 0.2%(质量分数)氢氧化钾-2%(质量分数)硼氢化钾溶液为还原剂,5%(质量分数)盐酸-10%(质量分数)硫脲-10%(质量分数)抗坏血酸为介质液,双通道原子荧光仪在线监测.结果表明,砷元素在 1.0～20.0 μg/L、汞在 0.10～2.00 μg/L范围内线性关系良好,方法检出限分别为 0.125、0.0125 μg/L,加标回收率为 90.6%～109.0%,精密度RSD为1.48%～3.89%.该方法操作简便,同时测定地表水中砷和汞含量准确高效,适用性强.
Abstract
The dual channel atomic fluorescence method for simultaneous determination of arsenic and mercury in surface water was developed.Using 0.2%potassium hydroxide and 2%potassium borohydride solution as reducing agent and 5%hydrochloric acid,10%thiourea and 10%ascorbic acid as medium,the on-line monitoring was carried out by double-channel atomic fluorometer.The results showed that the linear relationships were good in the range of 1.0～20.0 μg/L for arsenic and 0.10～2.00 μg/L for mercury.The detection limits were 0.125μg/L and 0.012 5μg/L,respectively.The recoveries were 90.6%～109.0%and the precision RSD was 1.48%～3.89%.The method is simple to operate,accurate,efficient and suitable for the determination of arsenic and mercury in surface water.
关键词
双通道原子荧光法/地表水/砷/汞Key words
double channel atomic fluorescence method/surface water/arsenic/mercury引用本文复制引用
出版年
2024
NETL
NSTL
万方数据