绿色直接超声波泥采样和电热原子吸收光谱法用于对固体塑料样品的金属分析
Katarína Chovancová1, Nicolas Milan Michalides1, Martina Košlabová1
1Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University Bratislava, Ilkovičova 6, Mlynská Dolina, 842 15 Bratislava, Slovak Republic. radoslav.halko@uniba.sk.
Analytical methods : advancing methods and applications
|January 25, 2024
概括
使用泥采样和电热原子吸收光谱的新绿色分析方法有效地确定塑料中的有毒金属. 该技术为分析各种塑料材料中的,和提供了一种可行的方法.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 评估塑料中有毒金属含量对于环境和健康安全至关重要.
- 在固体矩阵中进行金属分析的传统方法可能耗时且需要大量的样本准备.
- 开发"绿色"分析方法对于最小化环境影响至关重要.
研究的目的:
- 开发和验证一种"绿色"分析方法,用于确定固体塑料中的有毒金属 (Al,Ba,Cr).
- 优化泥采样技术与电热原子吸收光谱学 (ETAAS) 结合用于塑料样品分析.
- 确定这种方法用于塑料材料的常规分析的可行性.
主要方法:
- 泥采样技术与电热原子吸收光谱学 (ETAAS) 相结合.
- 关键参数的优化:温度程序 (热解和原子化),泥的液体介质,液体体积和样品质量.
- 使用已确定的参数进行验证,包括检测和量化的极限,以及相对标准偏差.
主要成果:
- 最佳的热解温度在1300-1700°C之间,原子化温度在2100-2400°C之间.
- 最佳的液体介质包括H2O,0.2%HNO3和0.2%HCl,最佳液体体积为5-15毫升,样品质量为30-100毫克.
- 实现了检测 (0.06-0.52 ng g-1) 和定量化 (0.22-1.69 ng g-1) 的低极限,相对标准偏差低于5%.
结论:
- 开发的泥采样-ETAAS方法是分析各种塑料样品中的,和的可行和"绿色"技术.
- 该方法表现出高效率和精度,确定的分析物度处于指定的范围内.
- 这种方法为在固体塑料矩阵中测定有毒金属提供了强大的替代方案.
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