固体进样-冷原子吸收法测定城市污泥中汞的研究  

Study on the Solid Sampling-Cold Atomic Absorption Method of Determining Mercury in Municipal Sludge

作　　者：崔静 宋艳艳 徐效民 王晓宁 边志明 CUI Jing;SONG Yanyan;XU Xiaomin;WANG Xiaoning;Bian Zhiming(Zibo Ecological Environment Monitoring Center of Shandong Province,Zibo 255000,China;Shandong Baijia Human Resources Co.,Ltd.,Jinan 250000,China)

机构地区：[1]山东省淄博生态环境监测中心,山东淄博255000 [2]山东佰嘉人力资源有限公司,济南250000

出　　处：《中国资源综合利用》2021年第8期1-3,共3页China Resources Comprehensive Utilization

基　　金：淄博市重点研发计划项目(2019gy010142)。

摘　　要：本研究应用固体测汞仪,将热分解和塞曼校正原子吸收光谱技术相结合,建立了一种无须消解而直接进样测定城市污泥中总汞的分析方法。结果表明,该方法具有良好的线性,低浓度和高浓度工作曲线的线性相关系数R分别为0.9995和0.9996;平行测定(次数n=6)中,标准样品和实际样品的相对标准偏差(RSD)分别为2.81%~6.72%和0.73%~6.57%;国家标准样品的测定结果均处于质控标准值范围内,相对误差为2.2%~11.0%;通过测定实际样品,与传统原子荧光法比较,两种方法的测定结果具有良好的可比性。总之,该方法简便快速、精密度好、准确度高,可广泛应用于土壤、沉积物、城市污泥等复杂固体样品中汞的测定。In this study,a solid mercury measuring instrument is used to combine thermal decomposition and Zeeman correction atomic absorption spectroscopy techniques to establish an analytical method for the determination of total mercury in municipal sludge without digestion.The results show that the method has good linearity,and the linear correlation coefficients R of the low-concentration and high-concentration working curves are 0.9995 and 0.9996,respectively;in parallel determination(number of times n=6),the relative standard deviation(RSD)of the standard sample and the actual sample are 2.81%~6.72%and 0.73%~6.57%,respectively;the determination results of national standard samples are all within the range of quality control standard values,with a relative error of 2.2%to 11.0%;by measuring the actual sample,compared with the traditional atomic fluorescence method,the measurement results of the two methods have good comparability.In short,the method is simple,fast,precise,and highly accurate,and can be widely used in the determination of mercury in complex solid samples such as soil,sediment,and municipal sludge.

关 键 词：汞 快速 准确度 城市污泥 测定方法 

分 类 号：X833[环境科学与工程—环境工程] O657.31[理学—分析化学]