环境监测管理与技术
環境鑑測管理與技術
배경감측관리여기술
THE ADMINISTRATION AND TECHNIQUE OF ENVIRONMENTAL MONITORING
2015年
4期
51-53
,共3页
重金属%化学形态%超声提取%电感耦合等离子体质谱法%土壤
重金屬%化學形態%超聲提取%電感耦閤等離子體質譜法%土壤
중금속%화학형태%초성제취%전감우합등리자체질보법%토양
Heavy metals%Chemical speciation%Ultrasonic vibration extraction%ICP-MS%Soils
采用超声提取处理土壤样品，用ICP－MS分析样品中Cu、Zn、Pb、Cd、Ni、Cr等6种重金属元素形态，通过试验分析超声提取时土壤样品粒径、超声提取时间对提取效率的影响。方法在0．500μg／L～100μg／L之间线性良好，检出限为0．007μg／L～0．8μg／L，实际样品测定结果的RSD为4．7％～22．7％。土壤中重金属4种形态之和的总量与全量的相对偏差为11．0％～36．4％。将该方法与连续振荡法的试验结果比对，表明两方法对土壤样品的提取效率无显著性差异。
採用超聲提取處理土壤樣品，用ICP－MS分析樣品中Cu、Zn、Pb、Cd、Ni、Cr等6種重金屬元素形態，通過試驗分析超聲提取時土壤樣品粒徑、超聲提取時間對提取效率的影響。方法在0．500μg／L～100μg／L之間線性良好，檢齣限為0．007μg／L～0．8μg／L，實際樣品測定結果的RSD為4．7％～22．7％。土壤中重金屬4種形態之和的總量與全量的相對偏差為11．0％～36．4％。將該方法與連續振盪法的試驗結果比對，錶明兩方法對土壤樣品的提取效率無顯著性差異。
채용초성제취처리토양양품，용ICP－MS분석양품중Cu、Zn、Pb、Cd、Ni、Cr등6충중금속원소형태，통과시험분석초성제취시토양양품립경、초성제취시간대제취효솔적영향。방법재0．500μg／L～100μg／L지간선성량호，검출한위0．007μg／L～0．8μg／L，실제양품측정결과적RSD위4．7％～22．7％。토양중중금속4충형태지화적총량여전량적상대편차위11．0％～36．4％。장해방법여련속진탕법적시험결과비대，표명량방법대토양양품적제취효솔무현저성차이。
Ultrasonic extraction was used to extract soil samples,and copper,zinc,lead,cadmium and chro-mium in samples were analyzed by ICP-MS.The effects of the particle size of the soil and extraction time on the extraction efficiency were studied by experiments.The method linear ranges were between 0.500 μg/L to 100 μg/L,and the method detection limits were between 0.007 μg/L to 0.8 μg/L.The relative standard devia-tions of practical samples were from 4.7%to 22.7%.The relative deviations of the sum of 4 chemical speciations and total content were in the range of 11.0%~36.4%.Compared with the mechanical shaking extraction meth-od,there were no significant differences on extraction efficiency.
