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通过诱导合等离子体光学发射光谱法确定垃圾中的微量重金属元素,在提取后使用基于胆化物的深度环氧溶剂进行提取

Junlei Zhong^1,2, Zhikun Wang^1,2,3, Yujie Chen^2,3

¹Department of Optical Engineering, College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University Hangzhou Zhejiang 311300 P.R. China liangchen@zafu.edu.cn.

|July 17, 2024

概括

一种新的绿色方法,使用基于胆化物的深溶解剂 (DES),有效地从环境垃圾中提取重金属. 这种方法提供了比传统的微金属分析方法更安全,更节能的替代方案.

科学领域:

环境化学环境化学
分析化学分析化学
绿色化学绿色化学

背景情况:

准确确定环境样本中的微量金属元素至关重要.
传统的样品制备方法往往涉及危险化学品和高能耗.
开发绿色,安全和高效的分析方法是优先考虑的.

研究的目的:

开发和优化一种绿色,安全和准确的样本准备方法,用于环境样本中的微量金属分析.
为了利用基于胆化物的深溶剂 (DESs) 来从垃圾中提取重金属.
与传统技术相比,评估拟议方法的效率和能源消耗.

主要方法:

从废弃物中提取重金属 (Cd,Cu,Zn,Fe),使用各种基于胆化物的深度欧溶剂 (DES).
优化DES参数,包括类型,比例,剂量,提取时间和温度.
使用感应合等离子体光学发射光谱法 (ICP-OES) 量化目标分析物.
验证方法的准确性和可重复性.

主要成果:

由胆化物和酸组成的DES系统显示出高提取效率 (98.5%的Cd, 88.4%的Cu, 90.2%的Zn, 93.7%的Fe).
优化的方法实现了低检测极限 (0.04-0.70毫克/公斤-1) 和定量 (0.13-2.30毫克/公斤-1).
通过相对标准偏差评估的可重复性在1.14%至3.40%之间.
开发的方法只消耗了传统酸性消化所需的五分之一的能量.

结论:

基于胆化物的DESs提供了一个有效和环保的基准,用于从垃圾中提取微量金属.
拟议的方法可显著降低能源消耗,避免使用危险试剂.
这项研究推动了DES在环境分析中的应用,并为更绿色的分析方法做出了贡献.

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