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优化提取方法,以量化饮用水处理残留物中的微囊素:对安全土地应用的影响

Mudit Bhatia¹, Carolyn McEvoy Rose¹, Tae-Suh Yun¹

¹Department of Civil and Environmental Engineering, College of Engineering, University of Toledo, Mail Stop 307, 3006 Nitschke Hall, Toledo, OH 43606, United States.

Journal of hazardous materials

|June 1, 2025

概括

开发了优化方法来量化饮用水处理残留物 (DWTRs) 中的微囊 (MC). 特定的溶剂和预处理策略提高了CyanoHAB受影响的DWTRs对土地应用风险评估的准确性.

科学领域:

环境化学环境化学
水处理技术水处理技术
生态毒理学生态毒理学

背景情况:

淡水菌有害藻类繁殖 (CyanoHABs) 挑战饮用水处理厂 (DWTPs).
污染饮用水处理残留物 (DWTRs) 的土地应用可能会导致微囊素 (MC) 在作物中的积累.
关于DWTR矩阵的MC恢复效率的数据有限.

研究的目的:

优化饮用水处理残留物 (DWTRs) 中微囊素 (MC) 量化方法.
评估不同溶剂和预处理方法在MC回收方面的有效性.
评估运行处理厂的DWTR中的MC水平.

主要方法:

测试了五种溶剂和两种预处理方法,用于从DWTR中恢复MC.
确定了新鲜DWTR的最佳提取溶剂 (75%酸性甲醇).
确定了最佳溶剂 (甲醇+0.3%TFA) 用于老化/湖泊DWTR,不需要预处理.

主要成果:

最佳方法实现了不同MC同源和nodularin的可变回收,MC-YR在湖污泥中显示了最低的回收率 (16.37%).
来自三个DWTP的DWTR样本中的MC水平表明土地应用值的潜在超越.
特定于矩阵的优化 (新鲜与湖) 对于DWTR中准确的毒素分析至关重要.

结论:

在多种DWTR矩阵中开发并验证了MC量化的优化方法.
强调根据DWTR特征选择适当的提取溶剂和预处理的重要性.
强调需要强大的分析方法来管理与陆地应用CyanoHAB受影响的DWTR相关的风险.

关键词:

饮用水处理残留物的饮用水处理.有害的藻类开花有害的藻类开花这是LC-MS/MS.微囊是一种微囊.

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