一个小型的流量批次化学蒸汽生成系统,用于通过ICP-MS在鱼类中确定Hg
Ana Barbosa Viana1, Cristiane Pappis1, Cristian Kelling Pereira1
1Department of Chemistry, Laboratory of Microanalyses and Portability, Federal University of Santa Maria, Santa Maria, 97.105-900, Santa Maria, RS, Brazil.
Talanta
|July 26, 2024
概括
一个新的低成本流量批次系统用于化学蒸汽生成,有效地确定鱼类中的. 这种强大的方法提供了高灵敏度,低试剂消耗,并为例行鱼组织测试提供快速分析.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 鱼类中的 (Hg) 污染造成了严重的环境和健康问题.
- 准确和有效地确定鱼组织中的对于监测和监管至关重要.
研究的目的:
- 开发和验证一种新的,具有成本效益的流量批次 (FB) 系统,用于鱼类中的测定.
- 为了优化FB系统的高灵敏度,低检测极限和最小的试剂消耗.
主要方法:
- 设计了一个流量批次 (FB) 系统与化学蒸汽生成 (CVG) 和感应合等离子体质谱 (ICP-MS) 相结合.
- 低成本的环静电迷你被用于溶液推进,研究了各种FB配置.
- 该系统的性能使用经过认证的参考材料 (DOLT-4狗鱼肝) 和鱼组织样本进行了评估.
主要成果:
- 拟议的FB-CVG系统表现出极好的灵敏度,其低检测极限 (LOD) 为0.008μg g−1和量化极限 (LOQ) 为0.012μg g−1.
- 该方法需要最小的试剂 (1毫升减速剂,1毫升酸,0.16毫升样本) 并实现高样本吞吐量 (90次测量/小时).
- 通过对DOLT-4的分析证实了准确性,结果与认证值一致,回收超过95%.
结论:
- 开发的低成本FB-CVG系统是一个强大的,高效的工具,用于在鱼组织中进行常规的测定.
- 该系统的低试剂消耗和废物产生符合环境可持续性原则.
- 该方法的性能特征符合现行立法要求,用于鱼类中的量化.
相关概念视频
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