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首页> 外文期刊>The Science of the Total Environment >Occurrence and distribution of antibiotics and antibiotic resistant genes in water and sediments of urban rivers with black-odor water in Guangzhou, South China
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Occurrence and distribution of antibiotics and antibiotic resistant genes in water and sediments of urban rivers with black-odor water in Guangzhou, South China

机译：中国南方城市黑臭水城市河流水体和沉积物中抗生素和抗药性基因的发生与分布

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摘要

Urban rivers in some countries have been heavily polluted and the water became black and odor. Nevertheless, only few studies reported the occurrence of antibiotics and their corresponding antibiotic resistant genes (ARGs) in urban rivers with black-odor water with and without remediation. In this study, nine antibiotics (belonging to sulfonamides, tetracyclines, quinolones, and macrolides) and their corresponding ARGs in water and sediments of six urban rivers in Guangzhou, South China were analyzed to investigate their spatial distribution and the influence of water remediation. The concentrations of individual antibiotics varied from ND (not detectable) to 2702 ng/L and ND to 449 mu g/kg in surface water and sediments, respectively. Norfloxadn displayed the highest average concentrations, followed by ciprofloxacin. The relative abundance of quinolone-resistance gene qnrA (similar to 10(3) ARGs/16S rRNA) was the highest, followed by tetracyclines-resistance genes tetC (similar to 10(-2) ARGs/16S rRNA). The antibiotics and ARGs in sediments from various rivers exhibited distinct spatial distribution with large variation from upstream to downstream. Generally, levels of antibiotics and tetracyclines-resistance genes (tetA, tetC and tetM) in urban rivers with black-odor water (affected by industrial and domestic sewage) were higher than those in remediated urban rivers. Significant positive correlations were observed only between the relative abundances of tetA (or tetC) with the concentrations of some antibiotics (e.g., ciprofloxadn and norfloxadn). TetA was also significantly positively correlated with the concentrations of Ni, Cr, and As in sediments. This study found that urban rivers remediated with dredging might lower antibiotic levels in sediment, but high relative abundance of certain ARGs (e.g., tetB, qnrA) may still exist. (C) 2019 Elsevier B.V. All rights reserved.
机译：一些国家的城市河流已被严重污染，水变得黑臭。然而，只有很少的研究报道了在有或没有补救措施的情况下，带有黑臭水的城市河流中抗生素及其相应的抗生素抗性基因（ARG）的发生。在这项研究中，分析了广州市南部六个城市河流水和沉积物中的9种抗生素（分别属于磺酰胺，四环素，喹诺酮和大环内酯类）及其相应的ARGs，以研究其空间分布和水修复的影响。在地表水和沉积物中，每种抗生素的浓度分别为ND（不可检测）至2702 ng / L和ND至449μg/ kg。诺氟沙星的平均浓度最高，其次是环丙沙星。喹诺酮抗性基因qnrA（类似于10（3）ARGs / 16S rRNA）的相对丰度最高，其次是四环素抗性基因tetC（类似于10（-2）ARGs / 16S rRNA）。不同河流沉积物中的抗生素和ARGs表现出明显的空间分布，从上游到下游变化很大。通常，带有黑臭水（受工业和生活污水影响）的城市河流中的抗生素和四环素抗性基因（tetA，tetC和tetM）的水平高于经过修复的城市河流中的水平。仅在tetA（或tetC）的相对丰度与某些抗生素（例如环丙沙星和诺氟沙星）的浓度之间观察到显着正相关。 TetA也与沉积物中Ni，Cr和As的浓度显着正相关。这项研究发现，疏dr治理的城市河流可能会降低沉积物中的抗生素含量，但某些ARG（例如tetB，qnrA）的相对丰度可能仍然存在。 （C）2019 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《The Science of the Total Environment》 |2019年第20期|170-180|共11页
  • 作者

    Huang Yu-Hong; Liu Yue; Du Pei-Pei; Zeng Li-Juan; Mo Ce-Hui; Li Yan-Wen; Lu Huixiong; Cai Quan-Ying;

  • 作者单位

    Jinan Univ, Coll Life Sci & Technol, Guangdong Prov Res Ctr Environm Pollut Control &, Guangzhou 510632, Guangdong, Peoples R China;

    Jinan Univ, Coll Life Sci & Technol, Guangdong Prov Res Ctr Environm Pollut Control &, Guangzhou 510632, Guangdong, Peoples R China;

    Jinan Univ, Coll Life Sci & Technol, Guangdong Prov Res Ctr Environm Pollut Control &, Guangzhou 510632, Guangdong, Peoples R China;

    Jinan Univ, Coll Life Sci & Technol, Guangdong Prov Res Ctr Environm Pollut Control &, Guangzhou 510632, Guangdong, Peoples R China;

    Jinan Univ, Coll Life Sci & Technol, Guangdong Prov Res Ctr Environm Pollut Control &, Guangzhou 510632, Guangdong, Peoples R China;

    Jinan Univ, Coll Life Sci & Technol, Guangdong Prov Res Ctr Environm Pollut Control &, Guangzhou 510632, Guangdong, Peoples R China;

    South China Agr Univ, Coll Nat Resources & Environm, Guangzhou 510642, Guangdong, Peoples R China;

    Jinan Univ, Coll Life Sci & Technol, Guangdong Prov Res Ctr Environm Pollut Control &, Guangzhou 510632, Guangdong, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Antibiotics; Antibiotic resistant genes; Sediment; Urban rivers; Heavy metals; Black-odor water;

    机译：抗生素;抗生素抗性基因;沉积物;城市河流;重金属;黑臭水;

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