矿业漂浮试剂:对水中的金属-酸盐复合物的定量和强大的分析
Wen-Jun Wu1, Qing-Jun Zheng1, Jing-Wen Liang1
1Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
Journal of hazardous materials
|June 22, 2024
概括
一种新方法准确地量化了水中的金属酸盐复合物,揭示了它们在采矿废水中的广泛存在. 这一突破改善了漂浮试剂的环境风险评估.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 桑酸盐是采矿漂浮试剂,它们与铜,,和等性金属强烈结合.
- 这些金属的环境生物可用性和流动性因酸盐复合而改变.
- 在环境样本中精确量化金属酸盐复合物是一个重大挑战.
研究的目的:
- 开发和验证一种新,强大的方法,用于精确量化水样中的金属酸盐复合物.
- 分析由常见的酸盐 (乙烯,异烯,丁) 和性金属 (Cu,Pb,Cd,Zn) 形成的复合物.
- 评估这些复合物在漂浮废水中的环境发生和度.
主要方法:
- 该方法涉及硫 (S2-) 解离,其次是并联固相提取 (C18 + PWAX).
- 液体染色学与双重质谱学 (LC-MS/MS) 结合用于分析.
- 验证包括线性范围 (1-1000μg/L),方法检测极限 (0.002-0.036μg/L) 和恢复率 (70.6-107.0%).
主要成果:
- 开发的方法证明了广泛的线性 (R2 ≥0.995),低检测极限和良好的恢复.
- 金属酸盐复合物被无处不在地发现,作为漂浮废水中的主要物种.
- 测量度比之前报告的值高4.6-28.9倍.
结论:
- 这项研究提出了第一个用于分析水中的金属酸盐复合物的定量方法.
- 这些发现凸显了矿山废水中金属酸盐复合物度的严重低估.
- 该方法对于了解采矿中使用酸盐的环境命运和风险至关重要.
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