NP, OP and Derivatives in Freshwater Sediment Downstream of Textile Associated Municipal Wastewater Discharges

IF 3.7 4区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Archives of Environmental Contamination and Toxicology Pub Date : 2024-05-22 DOI:10.1007/s00244-024-01066-w
Benoit Lalonde, Christine Garron
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Abstract

Alkylphenol ethoxylates comprise of many anthropogenic chemicals such as nonylphenol (NP), octylphenol (OP) and nonylphenol ethoxylates (NPEOs). The objectives of this study were to assess the frequency and magnitude of detections of 4-NP, OP and NPEOs in Canadian sediment downstream of textile associated municipal wastewater treatment plants (MWWTPs) to determine if regulatory actions have had a beneficial impact on the receiving environment. Surficial sediments were obtained in four locations in the province of Québec (Canada) and were analyzed for nonylphenol, nonylphenol monoethoxylates (NP1EO), nonylphenol diethoxylates (NP2EO) and octylphenol from 2015 to 2018. Individual concentrations of the compounds varied from non detect to 419 ng/g. Of the four compounds analyzed, NP was detected the most frequently with a 75% detection rate while OPs were not detected in any of the samples. Since the Canadian regulatory actions have drastically reduced NP/NPEOs usage in textile mill factories and manufactured products, the potential source of these compounds in sediment for this study could stem from the outfall from the MWWTPs but not related to textile mills as well as from the usage of these compounds as formulants in pesticide products. Lastly, there were no exceedances to the Canadian Sediment Quality guideline toxic equivalency approach (TEQ) of 1400 ng/g or the 1310 ng/g guideline for NP in freshwater sediment from the European Scientific Committee on Health, Environmental and Emerging Risks. We hypothesize that the significant concentrations of these compounds in sediment may be a relevant and continuous source of 4NP in surface waters due to resuspension of sediment in the water column.

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与纺织相关的城市污水排放物下游淡水沉积物中的 NP、OP 及其衍生物。
烷基酚聚氧乙烯醚由许多人为化学物质组成,如壬基酚 (NP)、辛基酚 (OP) 和壬基酚聚氧乙烯醚 (NPEO)。本研究的目的是评估在与纺织相关的城市污水处理厂 (MWWTP) 下游的加拿大沉积物中检测到 4-壬基酚、辛基酚和壬基酚聚氧乙烯醚的频率和程度,以确定监管措施是否对接收环境产生了有益影响。在魁北克省(加拿大)的四个地点获得了表层沉积物,并在 2015 年至 2018 年期间对壬基酚、壬基酚单乙氧基化物(NP1EO)、壬基酚二乙氧基化物(NP2EO)和辛基酚进行了分析。化合物的单个浓度从未检测到 419 纳克/克不等。在分析的四种化合物中,NP 的检出率最高,达到 75%,而 OP 在所有样本中均未检出。由于加拿大的监管行动已大幅减少了纺织厂工厂和制成品中 NP/NPEOs 的使用,因此本研究中沉积物中这些化合物的潜在来源可能来自于水务污水处理厂的排污口,但与纺织厂无关,也可能来自于将这些化合物用作杀虫剂产品的配方剂。最后,加拿大沉积物质量准则毒性当量法 (TEQ) 规定的 1400 纳克/克或欧洲健康、环境和新风险科学委员会规定的淡水沉积物中 NP 准则 1310 纳克/克均未超标。我们假设,由于沉积物在水体中的再悬浮,沉积物中这些化合物的高浓度可能是地表水中 4NP 的一个相关且持续的来源。
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来源期刊
CiteScore
7.00
自引率
2.50%
发文量
63
审稿时长
8-16 weeks
期刊介绍: Archives of Environmental Contamination and Toxicology provides a place for the publication of timely, detailed, and definitive scientific studies pertaining to the source, transport, fate and / or effects of contaminants in the environment. The journal will consider submissions dealing with new analytical and toxicological techniques that advance our understanding of the source, transport, fate and / or effects of contaminants in the environment. AECT will now consider mini-reviews (where length including references is less than 5,000 words), which highlight case studies, a geographic topic of interest, or a timely subject of debate. AECT will also consider Special Issues on subjects of broad interest. The journal strongly encourages authors to ensure that their submission places a strong emphasis on ecosystem processes; submissions limited to technical aspects of such areas as toxicity testing for single chemicals, wastewater effluent characterization, human occupation exposure, or agricultural phytotoxicity are unlikely to be considered.
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