2,3,7,8-Tetrachlorodibenzo-p-dioxin的第二个来源在新泽西州下帕萨克河的沉积物中
Michael J Bock1, Lauren Brown1, Jennifer Jones1
1Verdantas, Yarmouth, ME, 04096.
Environmental toxicology and chemistry
|February 13, 2026
概括
下帕萨伊克河的第二个主要的2,3,7,8-四二二二氧化 (2,3,7,8-TCDD) 来源被确定为前Givaudan设施. 废水排放和化学品生产数据证实了Givaudan的数据.
科学领域:
- 环境化学环境化学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 众所周知,下帕萨克河 (LPR) 已被2,3,7,8-四二子二氧化 (2,3,7,8-TCDD) 污染.
- 之前的研究表明主要来源,但证据显示第二源正在出现.
- 确定所有主要来源对于有效的补救策略至关重要.
研究的目的:
- 调查前Givaudan设施的潜力,作为LPR的第二大2,3,7,8-TCDD来源.
- 整合沉积物化学,历史化学生产数据和水力动力学建模,以确定污染源.
- 量化Givaudan设施对LPR整体2,3,7,8-TCDD负担的贡献.
主要方法:
- 对2,3,7,8-TCDD和DDT+DDE的高分辨率日期沉积物核心的分析.
- 来自Givaudan和钻石的历史化学生产数据的整合.
- 利用河流流量模型和废水绕道事件记录来评估运输路径.
- 估计2,3,7,8-TCDD质量从吉瓦丹设施排出.
主要成果:
- 在Givaudan设施附近 (河里里 12-12.5) 观察到一个异常的DDT+DDE与2,3,7,8-TCDD比率.
- 1950年代末至1960年代初的沉积物数据显示,TCDD的2,3,7,8-增加,与Givaudan的2,4,5-TCP使用相吻合.
- 水力动力学模型和绕道记录表明,在11.5.5英里处的吉瓦丹河流里面有大量的废水排放.
- 据估计,Givaudan的2,3,7,8-TCDD排放量与钻石的排放量相当.
结论:
- 前Givaudan设施被确定为下帕萨克河的第二大2,3,7,8-TCDD来源.
- 吉瓦丹的历史运营和废水排放对LPR的二氧化物污染作出了重大贡献.
- 这些发现对于了解LPR污染的全部范围和为未来的清理工作提供信息至关重要.
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