ICP-AES和ICP-MS法测定不同环境样品中重金属镉的比较
Comparison between Two Methods for Cadmium Determination in Environmental Samples
李敏 1胡艳丽 1庞春燕 1李晓曼 1蔡伊莎1
作者信息
- 1. 四川省南充市环境监测中心站,四川南充 637000
- 折叠
摘要
[目的]比较ICP-AES和ICP-MS法测定重金属镉的优缺点,明确这2种方法各自的适用范围.[方法]对环境样品预处理后,分别采用ICP-AES和ICP-MS法测定镉含量,并对2种方法进行比较.[结果]ICP-AES和ICP-MS法的线性相关系数均为0.9999,精密度均优于3.0％,回收率为96.0％～ 103.6％,且对标准参考物质的测定结果均符合证书值要求,测定结果之间并无显著性差异.ICP-MS检出限更低,但仪器成本高,普及率低,主要应用在痕量及超痕量分析;ICP-AES在基层实验室的普及率更高.[结论]对于镉的常规分析优先选用ICP-AES,对于土壤样品,ICP-MS具有明显的测定优势.
Abstract
[Objective] To compare the advantages and disadvantages of ICP-AES and ICP-MS for detecting cadmium in environmental sampies,and to find the application range of the two methods.[Method] After pretreatment of environmental samples,cadmium content was detected by the two methods.[Result] The linear correlation coefficients of ICP-AES and ICP-MS were both 0.999,the RSD were than3.0％;recovery rates were between 96.0％ and 103.6％.Detection results of standard reference materials met the requirements of certificate value.There were no significant differences among detection results.ICP-MS had lower detection limit,but the instrument was expeenive with low popularizing rate.Thus,it was mainly applied in trace and ultra trace analysis.However,ICP-AES had higher popularizing rate in local laboratory.[Conclusion] ICP-AES is preferable for the routine analysis of cadmium,while ICP-MS has obvious advantages for soil samples.
关键词
重金属/镉/ICP-AES/ICP-MS/检出限Key words
Heavy metal/Cadmium/ICP-AES/ICP-MS/Detection limit引用本文复制引用
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据