氢化物原子荧光法同时测定土壤中砷、汞的方法研究  

Research Method for Arsenic and Mercury in Soil by Hydride Atomic Fluorescence Method

作　　者：周燕 鄢小勇 易永 盛天露 陈冠宜 刘永林 Zhou Yan;Yan Xiao-yong;Yi Yong;Sheng Tian-lu;Chen Guan-yi;Liu Yong-lin(Inspection and Certification Technology Development Institute of Jiangxi General Institute of Inspection and Certification,Nanchang Jiangxi 330052,China;Fengcheng Ecological Environment Bureau of Yichun,Yichun Jiangxi 331104,China;China.Nanchang Medical College,Nanchang Jiangxi 330004,China)

机构地区：[1]江西省检验检测认证总院检测认证技术发展研究院,江西南昌330052 [2]宜春市丰城生态环境局,江西宜春331104 [3]南昌医学院,江西南昌330004

出　　处：《江西化工》2023年第6期20-23,共4页Jiangxi Chemical Industry

基　　金：国家自然科学基金地区项目(81760706);2021年度江西省中医药科技计划一般项目(2021A347)。

摘　　要：本研究采用微波消解法对各类土壤样品进行前处理,采用氢化物原子荧光法同时对土壤中砷、汞进行含量测定,并从消解溶剂、消解时间及仪器条件参数等方面进行探究,建立了一种能满足于各类土壤中砷、汞日常检测的方法。结果显示该方法线性良好,相关系数r值均在0.999以上,回收率均在84%~99%,其中汞检出限在0.0018mg/kg,砷的检出限在0.008mg/kg。该方法可同时测定不同土壤中的砷、汞含量,操作简单、重现性精密度高、能满足土壤中砷、汞的日常含量测定。In this study,various soil samples were pre-treated by microwave digestion,arsenic and mercury in soil were determined by hydride generation atomic fluorescence spectrometry,in this paper,a method for daily detection of arsenic and mercury in all kinds of soil was established by exploring the digestion solvent,digestion time and instrument condition parameters.The results showed that the method had good linearity,the correlation coefficient r values were all above 0.999,and the recoveries were 84%~99%.The detection limits of mercury and arsenic were 0.0018 mg/kg and 0.008 mg/kg respectively.The method can be used to determine arsenic and mercury in different soils at the same time.It is simple to operate,has high reproducibility and can meet the requirements of daily determination of arsenic and mercury in soil.

关 键 词：原子荧光法 消解方法 砷 汞 

分 类 号：O657.31[理学—分析化学] X833[理学—化学]