澳大利亚废水中的双和酸盐:估计分散和点源贡献的统计方法
Belinda Moore1, Chang He1, Emma Knight1
1QAEHS, Queensland Alliance for Environmental Health Sciences, The University of Queensland, 4102 Brisbane, Australia.
Water research
|October 6, 2023
概括
与塑料相关的化学物质,如双和酸盐,污染了废水. 这项研究量化了分散和点源的贡献,发现两者都有显著的负载,其中一些化学品主要来自工业排放.
科学领域:
- 环境化学环境化学
- 评估水质水质的评估.
- 污染物源追踪 污染物源追踪
背景情况:
- 塑料衍生化学物质,包括双和酸盐,在污水系统中普遍存在.
- 确定这些污染物的来源 (扩散与点源) 对于有效管理至关重要.
- 目前的方法可能并不总是允许直接采样特定的工业或国内来源.
研究的目的:
- 开发一个统计基线来估计废水中双醇和酸盐的分散和点源贡献.
- 区分这些与塑料相关的化学物质的国内/商业 (扩散) 和工业 (点) 来源.
- 量化澳大利亚进入污水处理厂 (STP) 的特定双和酸盐的年度质量负载.
主要方法:
- 2019年,来自22个澳大利亚STP的废水样本被分析为2个双和9个酸盐.
- 计算了人口正常化的质量负载,并创建了多天的集合样本.
- 使用第一个四分位数的平均值加其标准偏差的10倍来确定统计基线,以区分分散和点源贡献.
主要成果:
- 在12种目标化学物质中,有11种始终被检测在量化限值以上.
- 双A (BPA),双S (BPS),二异尼尔甲酸盐 (DiNP) 和二甲基甲酸盐 (DMP) 被确定为主要的点源.
- 估计的年度负载为4.2 (扩散) 和4.5 (点) 的双;47 (扩散) 和5.9 (点) 的酸盐.
结论:
- 开发的统计方法有效地区分了废水中塑料相关化学品的分散和点源贡献.
- 扩散和点源都对进入STP的双醇和酸盐的总负载做出了重大贡献.
- 诸如BPA,BPS,DiNP和DMP等特定化学物质显示出点源的显著主导地位,突出显示了工业影响.
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