摘要
本文研究了原子荧光法(AFS)、电感耦合等离子体质谱法(ICP-MS)和电感耦合等离子体发射光谱法(ICP-OES)等3种不同方法检测地下水中的砷和汞.结果表明,地下水中砷汞的3种测试方法在一定的浓度范围内标准曲线线性良好,相关系数均在0.999以上,加标回收率和精密度较好,质控测定结果均在理论值范围内,说明3种方法有很好的准确性和稳定性,分析数据结果可靠. AFS和ICPMS砷检出限分别为0.10μg·L^(-1)和0.02μg·L^(-1),汞检出限分别为0.03μg·L^(-1)和0.05μg·L^(-1),都远低于相关水质标准检出限以及《地下水质量标准》规定的Ⅰ类水限值,完全能够满足地下水测试要求.而ICPOES砷和汞的检出限分别为20μg·L^(-1)和9.36μg·L^(-1),可用于受到污染的地下水样品检测.
The determination of arsenic and mercury in groundwater by AFS,ICP-MS and ICP-OES was studied in this paper.The results show that the standard curves of the three testing methods are linear in a certain concentration range,and the correlation coefficients are all above 0.999.The recovery and precision are good,and the quality control results are all within the theoretical range,indicating that the three methods have good accuracy and stability,and the analytical data are reliable.The limits of arsenic detection by AFS and ICP-MS are 0.10μg·L^(-1) and 0.02μg·L^(-1),respectively,and the limits of mercury detection are 0.03μg·L^(-1) and 0.05μg·L^(-1),respectively,which are far below the limits of relevant water quality standards and the limits of Class I water stipulated in Groundwater Quality Standards,and can satisfy the requirements of groundwater testing.The detection limits of arsenic and mercury by ICP-OES method are 20μg·L^(-1) and 9.36μg·L^(-1),respectively,can be used for the detection of contaminated groundwater samples.
作者
郝伟
李丽
张京
孙惠霞
HAO Wei;LI Li;ZHANG Jing;SUN Huixia(Beijing Institute of Geological Environment Monitoring,Urban Groundwater Safety Prevention and Control Technology Innovation Base,Beijing,100195,China)
出处
《环境化学》
CAS
CSCD
北大核心
2024年第2期689-692,共4页
Environmental Chemistry
