...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Parabens in Sediment and Sewage Sludge from the United States, Japan, and Korea: Spatial Distribution and Temporal Trends
【24h】

Parabens in Sediment and Sewage Sludge from the United States, Japan, and Korea: Spatial Distribution and Temporal Trends

机译：来自美国，日本和韩国的沉积物和污水污泥中的对羟基苯甲酸酯：空间分布和时间趋势

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Parabens (alkyl esters of p-hydroxybenzoic acid) are widely used in cosmetics, pharmaceuticals, and foodstuffs as broad-spectrum antimicrobial preservatives. Laboratory animal studies have shown that parabens possess weak estrogenic activity. Widespread exposure of humans to parabens has raised significant public health concerns. Despite such concern, little is known about the occurrence of parabens in the environment. In this study, six paraben analogues, methyl- (MeP), ethyl- (EtP), propyl- (PrP), butyl- (BuP), benzyl- (BzP), and heptyl parabens (HepP), were determined in surface sediment and sediment core samples collected from several locations in the United States (U.S.), Japan, and Korea by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Concentrations of parabens also were determined in sewage sludge collected from several wastewater treatment plants (WWTPs) in Korea. MeP was found in all samples, including surface sediment, sediment core, and sludge samples, at concentrations ranging from 0.312 to 540 ng/g dry weight (dw). PrP was detected in the majority of samples (79%), and the concentrations were, in general, 1-2 orders of magnitude lower than MeP concentrations. Significant positive correlations were found among the concentrations of paraben analogues in sediment and sludge, which suggested the existence of similar sources of origin for these compounds. The sum concentrations of six parabens (∑PBs) in sludge (geometric mean: 66.3, median: 89.5 ng/g dw) were remarkably higher than those in sediment (5.48, 5.24 ng/ g dw). Vertical profiles of parabens in sediment cores from the U.S. showed a gradual increase in concentrations in the past decade, although such a trend was not clear in sediment core from Tokyo Bay, Japan.
机译：对羟基苯甲酸酯（对羟基苯甲酸的烷基酯）作为广谱抗菌防腐剂广泛用于化妆品，药​​品和食品中。动物实验研究表明，对羟基苯甲酸酯具有弱的雌激素活性。人类广泛接触对羟基苯甲酸酯引起了重大的公共卫生关注。尽管存在这种担忧，但人们对环境中对羟基苯甲酸酯的发生知之甚少。在这项研究中，在表面沉积物中测定了六种对羟基苯甲酸酯类似物，即甲基（MeP），乙基（EtP），丙基（PrP），丁基（BuP），苄基（BzP）和庚基对羟基苯甲酸酯（HepP）。高效液相色谱-串联质谱（HPLC-MS / MS）从美国（美国），日本和韩国的多个地点收集到的沉积物和沉积物岩心样品。还测定了从韩国多家废水处理厂（WWTP）收集的污水污泥中对羟基苯甲酸酯的浓度。在所有样品中都发现了MeP，包括表面沉积物，沉积物芯和污泥样品，其浓度范围为0.312至540 ng / g干重（dw）。在大多数样品（79％）中检测到PrP，其浓度通常比MeP浓度低1-2个数量级。沉积物和污泥中对羟基苯甲酸酯类似物的浓度之间存在显着的正相关，这表明这些化合物存在相似的来源。污泥中的六种对羟基苯甲酸酯（∑PBs）的总浓度（几何平均值：66.3，中位数：89.5 ng / g dw）显着高于沉积物中的浓度（5.48，5.24 ng / g dw）。在过去十年中，来自美国沉积岩心的对羟基苯甲酸酯的垂直剖面显示浓度逐渐增加，尽管来自日本东京湾的沉积岩心的这种趋势尚不清楚。

著录项

  • 来源
    《Environmental Science & Technology》 |2013年第19期|10895-10902|共8页
  • 作者

    Chunyang Liao; Sunggyu Lee; Hyo-Bang Moon; Nobuyoshi Yamashita; Kurunthachalam Kannan;

  • 作者单位

    Wadsworth Center, New York State Department of Health, and Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Empire State Plaza, P.O. Box 509, Albany, New York 12201-0509, United States;

    Department of Marine Sciences and Convergent Technology, College of Science and Technology, Hanyang University, Ansan, Gyeonggi 426-791, South Korea;

    Department of Marine Sciences and Convergent Technology, College of Science and Technology, Hanyang University, Ansan, Gyeonggi 426-791, South Korea;

    National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan;

    Wadsworth Center, New York State Department of Health, and Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Empire State Plaza, P.O. Box 509, Albany, New York 12201-0509, United States;

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

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号