王水消解ICP-OES测定土壤/沉积物中9种重金属元素研究
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摘要
采用王水回流消解土壤/沉积物,利用基体匹配法建立ICP-OES同时测定土壤/沉积物中Be、V、Cr、Mn、Co、Ni、Cu、Zn和Pb的方法,并对各元素的谱线干扰进行了讨论和选择。利用该方法对十种土壤/沉积物标准物质进行测定,结果表明,Co、Mn、Ni、Cu和Zn的溶出率达80%以上;Pb的溶出率在50%~90%;Be、Cr和V的溶出率在40%~70%。各元素的相对标准偏差为0.3%~7.6%,加标回收率为92.1%~104%,检出限、精密度和准确度均满足土壤分析方法的要求。
A method for the determination of Be,V,Cr,Mn,Co,Ni,Cu,Zn and Pb in soil/sediment samples by ICP-OES with matrix matching was established. The samples were digested by Aqua Regia. The spectrum interferences were investigated and chosen. Ten kinds of geochemical standard reference material were analyzed. The obtained results showed that Leaching rates of Co,Mn,Ni,Cu and Zn were more than 80%,Pb was 50% ~ 90%,and Be,Cr and V were 40% ~ 70%. The relative standard deviation(RSD) of nine metal elements was 0. 3% ~ 7. 6%,and the recovery rate was 92. 1% ~ 104%. The detection limit,precision and accuracy of the methods met the requirements of the determination of soil.
A method for the determination of Be,V,Cr,Mn,Co,Ni,Cu,Zn and Pb in soil/sediment samples by ICP-OES with matrix matching was established. The samples were digested by Aqua Regia. The spectrum interferences were investigated and chosen. Ten kinds of geochemical standard reference material were analyzed. The obtained results showed that Leaching rates of Co,Mn,Ni,Cu and Zn were more than 80%,Pb was 50% ~ 90%,and Be,Cr and V were 40% ~ 70%. The relative standard deviation(RSD) of nine metal elements was 0. 3% ~ 7. 6%,and the recovery rate was 92. 1% ~ 104%. The detection limit,precision and accuracy of the methods met the requirements of the determination of soil.
引文
[1]赵志南,冯文坤,张力,等.ICP-OES测定全国土壤污染状况详查项目中9种金属元素[J].环境化学,2017,36(3):685-687.
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[2]郝明.王水消解法同时测定土壤中Cu,Zn,Ni,Cr,Pb,Cd的方法研究[J].农业科技与装备,2013(3):6-8.
[3]乐淑葵,段永梅.电感耦合等离子体质谱法(ICPMS)测定土壤中的重金属元素[J].中国无机分析化学,2015,5(3):16-19.
[4]吴涛,康厚军,石正坤.微波消解样品-电感耦合等离子体原子发射光谱法测定土壤中铀[J].理化检验:化学分册,2013,49(2):219-221.
[5]张艳,罗岳平,黄钟霆,等.微波消解-石墨炉原子吸收法测定土壤中铊[J].中国环境监测,2016,32(3).
[6]倪子月,陈吉文,刘明博,等.能量色散X射线荧光光谱法测定土壤中铬和锰的干扰校正[J].冶金分析,2016,36(10):10-14.
[7]曹磊,陈微微,高孝礼,等.基体干扰对ICP-AES分析土壤样品中主、次量元素的影响研究[J].光谱学与光谱分析,2016,36(7):2260-2265.