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使用高分辨率连续源分子吸收光谱法分化硫,使用和疏水性纳米颗粒作为化学修饰剂

Thebny Thaise Moro¹, Welman C Elias¹, Isabelle Borges¹

¹Chemistry Department, Federal University of Santa Catarina, 88040-900, Florianópolis, Santa Catarina, Brazil.

|August 22, 2024

概括

使用高分辨率连续源分子吸收光谱 (HR-CS MAS) 来分离有机和无机的硫种. 这种新的方法利用化学修饰剂和优化的温度程序来准确地分硫.

科学领域:

分析化学分析化学
频谱学是一种光谱学.
环境科学环境科学

背景情况:

精确确定有机和无机硫种对于环境和工业应用至关重要.
现有的硫分离方法可能是复杂和耗时的.
高分辨率连续源分子吸收光谱法 (HR-CS MAS) 提供了改进硫分析的潜力.

研究的目的:

开发和验证新的HR-CS MAS方法,用于有机和无机硫 (S) 物种的顺序分离.
优化化学修饰剂和温度程序,以准确确定S物种.
评估开发的方法的特异性和准确性.

主要方法:

使用HR-CS MAS. 顺序确定有机 (CSorg) 和无机 (CSino) 硫.
优化了两步热解 (1800°C,800°C) 和蒸发 (2500°C) 的温度程序.
作为化学修饰剂的疏水性纳米粒子 (Pd NPs) 和 (Ca) 的实施.
应用统计模型 (Doehlert,中央复合设计) 进行方法优化.

主要成果:

开发了两种不同的方法来确定CSorg和CSino.
使用 Pd NPs 和 Ca 修饰剂成功分离了 S 种.
优化条件将S物种的相互转换降到最低.
实现了低检测极限 (LoD):CSorg的2.4毫克L-1和CSino的2.1毫克L-1.
高回收率 (>92%) 验证了方法的准确性和特异性.

结论:

拟议的HR-CS MAS方法为分离有机和无机硫提供了可靠和准确的方法.
这种技术为硫特异化分析提供了有价值的替代方案.
这项研究表明HR-CS MAS在S分化中的前所未有的应用.

关键词:

在CS分子中,CS分子.修饰剂是一种修饰剂.人权高官-CS GF 马斯马斯疏水性 Pd NPs 修饰剂的修饰剂硫的分化方法是硫的分化方法.

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