固相萃取-电感耦合等离子体质谱法测定海水中22种痕量金属元素
Determination of twenty-two trace elements in seawater by solid phase extraction-inductively coupled plasma mass spectrometry
贾亮亮 1董凌云 2范培栋 3郝兴华 1王艳洁4
作者信息
- 1. 河北省水文工程地质勘查院,河北 石家庄 050021;河北省地下水资源与生态环境安全技术创新中心,河北 石家庄 050021
- 2. 保定学院,河北 保定 071000
- 3. 河北省水文工程地质勘查院,河北 石家庄 050021
- 4. 国家海洋环境监测中心, 辽宁 大连 116023
- 折叠
摘要
建立了以亚氨基二乙酸型螯合树脂为填料的固相萃取分离富集、电感耦合等离子体质谱法(ICP-MS)测定海水中 22种痕量金属元素的新方法.将海水pH调至 8.5～9.0,15%硝酸为洗脱溶液,萃取分离富集海水中 22种元素,ICP-MS对洗脱溶液进行定量分析.实验结果表明:在优化的实验条件下,方法的相对标准偏差(RSD)为 2.5%～4.8%,检出限为 0.008～0.052 μg/L,测定下限为0.032～0.208 μg/L,添加不同浓度的标准溶液,加标回收率为 80.0%～108.0%.建立的方法操作简单、灵敏、高效,实现了海水中 22种金属元素的绿色分离和快速检测,为海洋化学、海洋环境研究提供技术支撑.
Abstract
With iminodiacetic acid type chelating resin as filler,a method for the determination of twenty-two trace metal elements in seawater by inductively coupled plasma mass spectrometry(ICP-MS)after solid phase extraction separation and preconcentration was established.Adjusting the pH value of seawater to 8.5-9.0,15%nitric acid was used as the elution solution to extract.Twenty-two trace elements in seawater were extracted and enriched.The elution solution was quantitatively analyzed using ICP-MS.The result of experiment show that:Under optimized experimental conditions,the relative standard deviation(RSD)of the method was 2.5%-4.8%,and the detection limit was 0.008-0.052 μg/L,lower limit of measurement was 0.032-0.208 μg/L,Adding standard solution of different concentrations,the recovery rates were 80.0%-108.0%.The established method was easy to operate,sensitive and efficient,achieving green separation and rapid detection of twenty-two elements in seawater.It provided technical support for marine chemistry and marine environmental research.
关键词
螯合树脂/固相萃取/ICP-MS/海水/痕量元素Key words
chelate resin/SPE/ICP-MS/seawater/trace elements引用本文复制引用
基金项目
2022年河北省地方标准制修订项目(GY202219)
保定学院科研培育基金项目(2022D01)
出版年
2024
NETL
NSTL
万方数据