三嗪类紫外线滤光剂和阻燃剂:中国全国范围内的共同发生率和流行率研究

IF 8.8 2区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL
Jiali Ge, Jiehua Li, Xu Han, Bibai Du, Ying Guo, Hongkai Zhu and Lixi Zeng*, 
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引用次数: 0

摘要

三嗪衍生的紫外线过滤器(TA UVF)和阻燃剂(TA FR)已越来越多地用于工业需求。然而,关于它们在城市污泥中大规模共存和流行趋势的知识仍然存在差距。在这里,我们对中国污泥中废水衍生的TA UVF和TA FR进行了首次全国范围的调查。在全国污泥样品中共检测到17种TA UVF和6种TA FR。在23种目标三嗪化学物质中,17种是首次在污泥中报告的,4种是新在环境中发现的。一般来说,TA FR显示出比TA UVF更高的污染物水平。两类三嗪化学品的总污泥浓度范围为106至2170纳克/克(中位数为994纳克/克)。从中国东部和中部到西部,TA UVFs和TA FRs的浓度呈明显的空间分布趋势。据估计,我国TA-UVFs和TA-FRs每年流入污泥的总量为14.6吨/年,其中2.34吨/年直接释放到污泥改良土壤中。我们在这里的研究结果强调了城市污泥中普遍存在两类新出现的常用三嗪化学品,应予以紧急关注。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Triazine-Derived Ultraviolet Filters and Flame Retardants: A Nationwide Co-Occurrence and Prevalence Study in China

Triazine-Derived Ultraviolet Filters and Flame Retardants: A Nationwide Co-Occurrence and Prevalence Study in China

Triazine-derived ultraviolet filters (TA-UVFs) and flame retardants (TA-FRs) have been increasingly used for industrial needs. However, there remains a gap in knowledge regarding their co-occurrences and prevalence trends in municipal sludge on a large scale. Here, we conducted the first national-scale survey of wastewater-derived TA-UVFs and TA-FRs in the sludge of China. A total of 17 TA-UVFs and 6 TA-FRs were detected in the nationwide sludge samples. Among the 23 target triazine chemicals, 17 were reported for the first time in sludge and 4 were newly identified in the environment. Generally, the TA-FRs showed higher pollutant levels than the TA-UVFs. The total sludge concentrations of the two classes of triazine chemicals ranged from 106 to 2,170 ng/g (median of 994 ng/g). A clear spatial distribution trend of decreasing concentrations of TA-UVFs and TA-FRs was observed from East and Central China toward West China. The total annual influx of TA-UVFs and TA-FRs into the sludge in China was estimated to be 14.6 tons/year, among which 2.34 tons/year was directly released into sludge-amended soils. Our findings presented here highlight the widespread presence of two emerging classes of commonly used triazine chemicals in urban sludge and should be given urgent attention.

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来源期刊
Environmental Science & Technology Letters Environ.
Environmental Science & Technology Letters Environ. ENGINEERING, ENVIRONMENTALENVIRONMENTAL SC-ENVIRONMENTAL SCIENCES
CiteScore
17.90
自引率
3.70%
发文量
163
期刊介绍: Environmental Science & Technology Letters serves as an international forum for brief communications on experimental or theoretical results of exceptional timeliness in all aspects of environmental science, both pure and applied. Published as soon as accepted, these communications are summarized in monthly issues. Additionally, the journal features short reviews on emerging topics in environmental science and technology.
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