Occurrence, spatial variation and risk assessment of pharmaceuticals and personal care products in urban wastewater, canal surface water, and their sediments: A case study of Lahore, Pakistan
Occurrence, spatial variation and risk assessment of pharmaceuticals and personal care products in urban wastewater, canal surface water, and their sediments: A case study of Lahore, Pakistan
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城市废水、运河地表水及其沉积物中药品和个人护理产品的存在、空间变化和风险评估：以巴基斯坦拉合尔为例
DOI：
10.1016/j.scitotenv.2019.06.285
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发表时间：
2019-10-20
影响因子：
9.8
通讯作者：
Sun, Qian
中科院分区：
文献类型：
--
作者：
Ashfaq, Muhammad;Li, Yan;Sun, Qian
由于巴基斯坦缺乏废水处理设施，废水直接通过城市下水道排放，可能会造成高浓度污染物，引起新的关注和潜在的环境风险。本研究重点关注巴基斯坦拉合尔城市排水沟和运河的水和沉积物样本中 52 种不同类别的药品和个人护理产品 (PPCP) 的出现情况和风险评估。城市下水道废水和渠道地表水中检出的PPCPs以非甾体类抗炎药为主。对乙酰氨基酚的浓度最高，中位浓度为 13,880 ng/L，其次是咖啡因，中位浓度为 6200 ng/L。沉积物样品中抗生素是主要的 PPM，其中氧氟沙星浓度最高（中值为 1980 μg/kg），其次是环丙沙星和土霉素。空间变化表明，人口密度与地表水中许多PPCPs的水平具有显着相关性，而其中一个排水系统受到附近工业区直接废水排放的影响。从风险商的角度进行生态风险评估表明，大多数PPCPs可能对水生群落造成高风险。这种高风险可能会导致食品和农作物进一步污染。因此，建议执行废水处理的环境立法。 (C) 2019 Elsevier B.V. 保留所有权利。
Due to the lack of wastewater treatment facility in Pakistan, the wastewater is directly discharged via urban drains, which might cause a high load of contaminants of emerging concerns and potential environmental risks. The present study focused on the occurrence and risk assessment of 52 pharmaceuticals and personal care products (PPCPs) of diversified classes in the water and sediment samples of urban drains and canal of Lahore, Pakistan. Non-steroidal anti-inflammatory drugs were the predominant PPCPs detected in the wastewater of urban drains and surface water of canal. The highest concentration was observed for acetaminophen, with median concentration of 13,880 ng/L followed by caffeine with median concentration of 6200 ng/L. Antibiotics were the predominant PPM in the sediment samples with highest concentration of ofloxacin (median value of 1980 mu g/kg) followed by ciprofloxacin and oxytetracycline. Spatial variation showed that the population density has significant correlation with the level of many PPCPs in surface water while one of the drainage systems is affected by the direct wastewater discharge from the nearby industrial arca. Ecological risk assessment in terms of risk quotient revealed that most of the PPCPs may cause high risk to the aquatic community. This high risk may lead to further contamination of food and crops. therefore enforcement of environmental legislations for treatment of wastewater is recommended. (C) 2019 Elsevier B.V. All rights reserved.