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Occurrence of emerging organic contaminants in a tropical urban catchment in Singapore

机译:在新加坡的热带城市集水区出现新兴的有机污染物

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摘要

Emerging organic contaminants (EOCs) occurring in urban runoff can negatively impact sensitive ecosystems and drinking water resources. The occurrence of 13 EOCs was characterized in the Marina Catchment, a large urban catchment approximately one-sixth the area of Singapore. The 13 EOCs included alkylphenol ethoxylate metabolites (APEMs), hormones, Pharmaceuticals, bisphenol A, and a pesticide (fipronil). The APEMs were most prevalent with concentrations of nonylphenol ethoxyacetic acid (NP1 EC) and nonlyphenol (NP) ranging from several ng L-1 to 6 ug L-1 and 4 ug L~ respectively, while concentrations of octylphenol ethoxyacetic acid (OP1EC), dicarboxylated alkylphenol ethoxyacetic acid (CA3P1EC, CA4P1EC) were as high as 0.9 uglr1. Other EOCs were present in the ngir1 range: chloramphenicol 1-15 ngL-1, ibuprofen 2-76 nglr1, naproxen 8-108 nglr1, bisphenol A 30-625 nglr1, fipronil 1-72 ng L-1, estrone 1-304 ng L-1 estriol 3-451 ng IT1. The APEMs and EOCs detected appear to enter canals and rivers from non-point sources, possibly from runoff and leaking sewer lines. The closure of Marina Bay with a barrage has resulted in significantly higher levels of APEMS compared to when the bay was open to the sea. Depth profiles show that NP1EC and OP1EC were notably lower in deep waters compared to surface waters. NP, estrone and estriol exceeded literature-based Predicted No Effect Concentration (PNEC) values.
机译:城市径流中出现的新兴有机污染物(EOC)会对敏感的生态系统和饮用水资源产生负面影响。滨海集水区是13个EOC的特征,滨海集水区是一个大型的新加坡集水区,约占新加坡面积的六分之一。 13种EOC包括烷基酚乙氧基化物代谢物(APEMs),激素,药品,双酚A和农药(氟虫腈)。 APEM最普遍,壬基酚乙氧基乙酸(NP1 EC)和壬基酚(NP)的浓度分别为几ng L-1至6 ug L-1和4 ug L〜,而辛基酚乙氧基乙酸(OP1EC)二羧化烷基酚乙氧基乙酸(CA3P1EC,CA4P1EC)高达0.9 uglr1。 ngir1范围内还存在其他EOC:氯霉素1-15 ngL-1,布洛芬2-76 nglr1,萘普生8-108 nglr1,双酚A 30-625 nglr1,氟虫腈1-72 ng L-1,雌酮1-304 ng L-1雌三醇3-451 ng IT1。检测到的APEM和EOC似乎是从非点源(可能是径流和下水道)进入运河和河流的。与海湾向海开放相比,滨海湾的封锁使APEMS的水平显着提高。深度剖面表明,深水区的NP1EC和OP1EC明显低于地表水。 NP,雌酮和雌三醇超过了基于文献的预测的无效应浓度(PNEC)值。

著录项

  • 来源
    《Chemosphere》 |2011年第7期|p.963-969|共7页
  • 作者单位

    School of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, PR China,School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, Singapore;

    Department of Chemical Engineering and Applied Chemistry, University of Toronto, Room WB 320, 200 College Street, Toronto, ON, Canada MSS 3E5;

    Department of Chemical Engineering & Materials Science, Stevens Institute of Technology, Castle Point on Hudson, Hoboken, NJ 07030, USA;

    Department of Civil and Environmental Engineering, Faculty of Engineering, National University of Singapore, Blk E1A#02-19, 1 Engineering Drive 2, Singapore 117576, Singapore;

    Department of Civil and Environmental Engineering, Yang & Yamasaki Environment & Energy Building, 473 Via Ortega, Stanford University, Stanford, CA 94305, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    alkylphenol ethoxylate metabolites pharmaceuticals hormones occurrence urban catchment water;

    机译:烷基酚乙氧基化物代谢药物激素发生城市集水水;

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