烟作为环境化合物的来源
Pavla Fojtíková1, Josef Troup2, Dušan Merta3,4
1Faculty of Science, University of South Bohemia, Branišovská, 1760, 370 05, České Budějovice, Czech Republic. pfojtikova@prf.jcu.cz.
概括
烟在10小时内将超过75%的化合物释放到水中. ,和基是烟中发现的最丰富的,有助于环境污染.
科学领域:
- 环境化学环境化学
- 生态毒理学 生态毒理学
- 分析化学 分析化学
背景情况:
- 烟是环境污染的主要来源,含有7000多种化学成分.
- 由于有毒物质的浸出,CBs的积累对环境构成重大风险.
研究的目的:
- 为了量化新鲜吸烟的CBs中的化合物含量.
- 为了确定从CB中释放到水中的化合物的释放率.
- 为了监测这些化合物在自然水体中的环境命运.
主要方法:
- 在48小时内,八种化合物 (基,树脂,烟草,,瓜亚,o-cresol,m-cresol,p-cresol) 在水中释放的动力学.
- 来自五个不同品牌的CB中总含量的确定.
- 监测河流,溪流和池水中的释放和分解.
主要成果:
- 在10小时内,超过90%的化合物从CB中提取出来.
- 总含量在215-861μg/CB之间,其中,烟草醇和氨酸是最丰富的.
- 醇,烟草醇和基占醇总含量的75%左右.
- 释放动力学是独立于水的类型,但分解受其影响.
- 自然水中的最大度可与实验室提取物相比较,大多数在72小时内释放.
结论:
- CBs迅速将大量的化合物释放到水生环境中.
- ,烟草醇和基是CBs污染的关键贡献者.
- 这项研究提供了关于CBs对水污染的贡献的关键数据,突出了迫切需要管理策略的需求.
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