摘要
土壤重金属测定前处理方法参照HJ 832-2017标准,采用ICP-MS标准模式下测定前处理待测制备液中铬、镍、铜、铅含量。试验分3个阶段,第1阶段为2019年6~7月,进行了2个土壤标准物质重复性检测的准确性。第2阶段为2020年4~5月,进一步验证分析了2个土壤标准物质的准确度、精密度。第3阶段为2020年7~8月,调整仪器性能,优化调谐Mg、In、U信号值,测定土壤中铅含量;测试分析了土壤铬、镍、铜、铅的ICP-MS(DRC-Ⅱ)方法检出限和回收率。结果表明,ICP-MS(DRC-Ⅱ型)标准模式下测定土壤铬、镍、铜、铅全量含量的准确度和精密度均符合分析要求;土壤铬、镍、铜和铅的DRC-Ⅱ方法检出限分别为0.060、0.010、0.045和0.015 mg·kg^(-1),回收率为89.6%~112.3%。
According to the standard HJ 832-2017,the contents of chromium(Cr),nickel(Ni),copper(Cu)and lead(Pb)in the solution was prepared and then determined by ICP-MS in the standard mode.The experiments were divided into three stages.The repeatability test of two soil reference materials were determined at the first stage from June to July in 2019.The accuracy and precision of the two soil reference materials were further verified and analyzed at the second stage from April to May in 2020.The performance of the instrument was adjusted,and the signal values of Mg,In and U were optimized to determine the content of Pb in soil at the third stage from July to August in 2020.The detection limit and recovery rate of ICPMS(DRC-Ⅱ)for Cr,Ni,Cu and Pb in soil were analyzed.The results showed that the accuracy and precision of ICP-MS(DRC-Ⅱ)for determination of total contents of Ni,Cu,Cr and Pb in soil met the analytical requirements.The detection limits of Ni,Cu,Cr and Pb were 0.060,0.010,0.045 and 0.015 mg·kg^(-1),respectively,with the recoveries from 89.6%to 112.3%.
作者
季天委
俞丹宏
钟杭
汪玉磊
陈思力
JI Tian-wei;YU Dan-hong;ZHONG Hang;WANG Yu-lei;CHE Si-li(General Station of Cultivated Land Quality and Fertilizer Management in Zhejiang Province,Hangzhou Zhejiang 310020;Zhejiang Agricultural Products Quality Supervision and Testing Center,Hangzhou Zhejiang 310020)
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2022年第5期245-250,共6页
Soil and Fertilizer Sciences in China
基金
浙江省“三农六方”科技协作计划项目(2018SNLF029)。
关键词
土壤
重金属
标准模式
等离子体质谱法
soil
heavy metal
standard mode
inductively coupled plasma-mass spectrometry(ICP-MS)
