消解体系对土壤重金属测定的影响  

EFFECT OF DIGESTION SYSTEMS ON DETERMINATION OF HEAVY METALS IN SOIL

作　　者：徐伊莎 夏新[2] 李欣 王静 于雯 XU Yi-sha;XIA Xin;LI Xin;WANG Jing;YU Wen(College of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083,China;China National Environmental Monitoring Centre, Beijing 100012,China;Shenyang Environmental Monitor Center,Shenyang 110016,China;Tianjin Eco-environmental Monitoring Centre, Tianjin 300074,China;Ganzhou Environmental Monitor Center, Ganzhou 341000,China)

机构地区：[1]北京科技大学能源与环境工程学院,北京100083 [2]中国环境监测总站,北京100012 [3]沈阳市环境监测中心,沈阳110016 [4]天津市生态环境监测中心,天津300074 [5]赣州市环境监测站,赣州341000

出　　处：《环境工程》2019年第5期66-69,154,共5页Environmental Engineering

基　　金：国家环境保护标准制修订项目(环办函[2017]09号)

摘　　要：采用全自动消解仪,选用硝酸-盐酸-氢氟酸-高氯酸消解体系(国标法)和氢氟酸-高氯酸消解体系(两酸法),对5种国家土壤标准物质和5种实际土壤样品进行消解,使用电感耦合等离子体质谱法(ICP-MS)测定Cu、Pb、Zn、Cr、Cd、Ni 6种目标元素。结果表明:5种标准物质中Cu、Zn、Cd和Ni的2种酸体系消解方法的回收率为90%～105%,Pb和Cr国标法的回收率均明显高于两酸法。5种实际土壤样品的2种消解方法精密度均较好,Cu、Cd和Ni含量无显著性差异,Cr含量有显著性影响,实际土壤样品中四川红壤的Pb、Zn含量有显著性影响。HNO 3-HCl-HF-HClO 4 digestion system (recommended by national standard method) and HF-HClO 4 digestion system (two-acid method) were selected to digest five kinds of national standard soil materials and five kinds of actual samples by a full-automatic digestion instrument,and Cu, Pb, Zn, Cr, Cd and Ni target elements were determined by inductively coupled plasma mass spectrometry (ICP-MS).It was shown that the recovery rate for Cu, Zn, Cd and Ni among five standard materials by the both digestion systems reached 90%~105%.The recovery rate of Pb and Cr by the national standard method was obviously higher than that by the two-acid method.The two digestion methods for five actual soil samples showed good precision degree.There was no significant difference in the content of Cu, Cd and Ni, a significant influence on the content of Cr was indicated, and the content of Pb and Zn of actual soil sample-3 (red soil from Sichuan) was significantly influenced.

关 键 词：土壤 重金属 电感耦合等离子体质谱法 湿法消解 

分 类 号：X833[环境科学与工程—环境工程]