HG-AFS法土壤中痕量汞检出限测量不确定度评定  

Evaluation of Uncertainty in Determination of Trace Mercury in Soil by HG-AFS

作　　者：赵向阳[1] 陈雯婷 黄洋 钟琦[1] 张巍[1] ZHAO Xiang-yang;CHEN Wen-ting;HUANG Yang;ZHONG Qi;ZHANG Wei(Sichuan Bureau of Geology&Mineral Resources,Chengdu Integrated Testing Center of Rocks and Ores,Standard Metering Station,Evaluation and Utilization of Strategic Rare Metals and Rare Earth Resources Key Laboratory of Sichuan Province,Sichuan Chengdu 610081,China)

机构地区：[1]四川省地矿局成都综合岩矿测试中心,四川省地矿局标准计量站,稀有稀土战略资源评价与利用四川省重点实验室,四川成都610081

出　　处：《广州化工》2021年第10期95-97,共3页GuangZhou Chemical Industry

摘　　要：作者根据土壤中汞含量范围,配制了一系列标准浓度的汞溶液,按照《原子荧光光度计检定规程》(JJG 939-2009)规定,建立数学模型,计算了氢化物-原子荧光光谱法土壤中测痕量汞检出限,并对其不确定来源进行分析和评定。经评定,原子荧光光度计(北京海光ASF3000)测土壤中痕量汞检出限为0.019 ng,汞检出限测量扩展不确定度0.002 ng(k=2),评定结果为土壤中痕量汞的测定质量控制提供参考。According to the range of mercury content in soil,a series of standard concentration mercury solutions were prepared.On the basis of"verification regulation of atomic fluorescence photometer"(JJG 939-2009),the mathematical model was established to calculate the detection limit of Trace Mercury in soil by hydride generation atomic fluorescence spectrometry,and the sources of uncertainty were analyzed and evaluated.After evaluation,the detection limit of Trace Mercury in soil determined by atomic fluorescence spectrometer(ASF3000)was 0.019 ng,and the expanded uncertainty of mercury detection limit was 0.002 ng(k=2).The evaluation results provided reference for the quality control of determination of Trace Mercury in soil.

关 键 词：氢化物-原子荧光光谱法 土壤 汞 检出限 不确定度 

分 类 号：X833[环境科学与工程—环境工程] O657.61[理学—分析化学]