通过化学计量驱动的Vis-SWNIR吸收光谱学对铜精炼电解质中的Cu2+进行快速,清洁和定量分析
Du Yuan1, Yong Liu1, Linhua Jiang1
1State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China. jianglinhua@tongji.edu.cn.
Analytical methods : advancing methods and applications
|November 21, 2025
概括
一个新的光谱系统准确地量化了在提炼电解质中的铜 (Cu2+). 这种快速,具有成本效益的方法提高了铜生产质量和污染控制.
科学领域:
- 分析化学 分析化学
- 频谱学是一种光谱学.
- 化学测量 化学测量 化学测量
背景情况:
- 精确监测铜精炼电解质中的铜 (Cu2+) 度对于铜炼中的产品质量和环境保护至关重要.
- 由于高2+度的光谱复杂性和多种杂质的存在,现有的方法面临挑战.
研究的目的:
- 开发一种新的,快速的,非破坏性的,具有成本效益的光谱测量系统,用于量化铜精炼电解质中的高度Cu2+.
- 将可见短波近红外 (Vis-SWNIR) 吸收光谱与化学测量模型相结合,以克服来自杂质的光谱干扰.
主要方法:
- 利用UV-Vis-SWNIR光谱法分析Cu2+和Ni2+等常见杂质的光谱行为.
- 开发了一个光谱数据集 (n=600),模拟了不同Cu2+和杂质度的真实电解质条件.
- 训练并优化了四种化学测量校准模型:卷积神经网络 (CNN),多重线性回归 (MLR),部分最小平方 (PLS) 和支向量回归 (SVR).
主要成果:
- 确定Ni2+作为Cu2+分析的Vis-SWNIR区域的主要光谱干扰物.
- 高度的Cu2+和Ni2+都表现出强烈的线性度-吸收关系.
- 优化的化学测量模型在模拟样本中实现了1.1%的低相对误差,证明了高精度.
结论:
- 拟议的光谱系统为复杂的电解质矩阵中高度Cu2+的监测提供了一个清洁,快速,准确和具有成本效益的解决方案.
- 该系统的低仪器成本 (约700美元) 和运营优势超过了传统方法.
- 这项技术具有显著的潜力,可以提高铜精炼效率,实现实时过程控制,并支持环境监测.
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