酸化时间对ICP-MS检测金属的影响研究
Study on Effect of Acidification Time on Metal Detection by ICP-MS
韩国杭 1曾汇琳 1吴杰 1吴斌 1苏宇亮 1王旭晨1
作者信息
- 1. 珠海市供水有限公司,广东 珠海 519020
- 折叠
摘要
利用电感耦合等离子体质谱仪(ICP-MS)检测水中金属含量已被广泛应用于大型水质及环境监测实验室.但是现行有效的标准中,未对前处理方式如酸化时间和加酸顺序做明确说明.此次实验采用ICP-MS对地表水和地表水加标后的样品中21种金属的可溶性元素含量及元素总量进行测定,探讨不同加酸顺序和酸化时间对检验结果的影响.结果表明:测定地表水元素总量,应现场加酸,酸化4 h后摇匀,用0.45 µm滤膜过滤;测定可溶性元素,则现场摇匀后用0.45 µm滤膜过滤,加酸保存,尽快测定.
Abstract
The determination of metal content in water by inductive coupled plasma mass spectrometer(ICP-MS)has been widely used in water quality and environmental monitoring laboratories.However,in the current effective standards,there is no clear explanation of the pretreatment methods such as acidification time and acid addition order.In this experiment,ICP-MS was used to determine the soluble element content and total amount of 21 metals in surface water and surface water spiked sample to explore the influence of different acid addition order and acidification digestion time on the test results.The results showed that,in order to determine the total amount of surface water elements,acid should be added on site,acidified for 4 h,and filtered with 0.45 μm filter membrane;In order to determine soluble elements,the sample should be well shaken on site,and filtered with 0.45 μm filter,saved with acid,and determined as soon as possible.
关键词
电感耦合等离子体质谱仪/酸化/地表水/可溶性元素/元素总量Key words
ICP-MS/Acidification/Surface water/Soluble element/Total element引用本文复制引用
出版年
2024
NETL
NSTL
万方数据