| 宁夏入黄排水沟中药物和个人护理品的污染特征与生态风险评价 |
| 摘要点击 2237 全文点击 661 投稿时间：2023-03-28 修订日期：2023-06-07 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 药物和个人护理品(PPCPs) 入黄排水沟 污染特征 来源分析 风险评价 |
| 英文关键词 pharmaceuticals and personal care products(PPCPs) drains flowing into the Yellow River contamination characteristics source analysis ecological risk assessment |
|
| 中文摘要 |
| 药物和个人护理品（PPCPs）是一类新污染物，对水生生物具有潜在危害.为探究宁夏入黄排水沟中PPCPs的污染特征与生态风险，利用固相萃取-超高效液相色谱-质谱联用仪对21种PPCPs进行检测分析．结果表明，宁夏入黄排水沟中目标PPCPs的总浓度范围在47.52~1 700.96 ng·L-1之间.其中，环丙沙星、对乙酰氨基酚、二苯甲酮-3和避蚊胺的检出率大于80%；检出浓度最大的5种化合物分别为对乙酰氨基酚、避蚊胺、咖啡因、二苯甲酮-3和左氧氟沙星，浓度最大值分别为597.21、563.23、559.00、477.28和473.07 ng·L-1.空间分布上，排水沟中PPCPs的污染程度呈现出银川市>石嘴山市>吴忠市>中卫市的分布特征，入黄口采样点PPCPs总浓度范围为124.82~1 046.61 ng·L-1.来源分析表明，宁夏入黄排水沟中磺胺嘧啶和土霉素主要来自于畜禽养殖，左氧氟沙星和环丙沙星主要来源于医疗废水，三氯卡班和三氯生来自于生活污水和工业废水，咖啡因和避蚊胺主要来自于生活污水.入黄排水沟中双氯芬酸、西咪替丁、三氯卡班和三氯生的污染程度与区域人口数量和经济发展水平呈正相关.生态风险评价结果显示，宁夏入黄排水沟中左氧氟沙星、双氯芬酸、吉非罗齐、二苯甲酮-3和三氯卡班表现为高风险；值得关注的是，大多数采样点PPCPs的综合生态风险表现为高风险. |
| 英文摘要 |
| Pharmaceuticals and personal care products (PPCPs) are a group of emerging contaminants causing detrimental effects on aquatic living organisms even at low doses. To investigate the contamination characteristics and ecological risks of PPCPs in drains flowing into the Yellow River of Ningxia, 21 PPCPs were detected and analyzed using solid phase extraction and ultra-high performance liquid chromatography-mass spectrometry in this study. All 21 targeted compounds were detected in the drains, with total concentrations ranging from 47.52 to 1 700.96 ng·L-1. Ciprofloxacin, acetaminophen, benzophenone-3, and diethyltoluamide were the more commonly detected compounds, with detection frequencies exceeding 80%. The five highest-concentration PPCPs were acetaminophen, diethyltoluamide, caffeine, benzophenone-3, and levofloxacin, with the maximum concentrations of 597.21, 563.23, 559.00, 477.28, and 473.07 ng·L-1, respectively. Spatial analysis showed that the pollution levels of PPCPs in the drains of the four cities were different, with average concentrations of ∑PPCPs in the order of Yinchuan>Shizuishan>Wuzhong>Zhongwei. The total concentration of PPCPs before flowing into the Yellow River ranged from 124.82 to 1 046.61 ng·L-1. Source analysis showed that livestock and poultry breeding wastewater was the primary source for sulfadiazine and oxytetracycline, whereas medical wastewater was the primary source for levofloxacin and ciprofloxacin. The primary sources of triclocarban and triclosan were domestic sewage and industrial wastewater, whereas the primary source of caffeine and diethyltoluamide was domestic sewage. The pollution of diciofenac, cimetidine, triclocarban, and triclosan in the drains was positively correlated with the regional population and economic development level. The ecological risk assessment indicated that levofloxacin, diclofenac, gemfibrozil, benzophenone-3, and triclocarban posed high risks to aquatic organisms in drains flowing into the Yellow River. It is worthwhile to consider the mixture risk of the PPCPs that exhibited high risk at most sampling sites. |
|
|
|
