| 宁夏第三排水沟中药物和个人护理品(PPCPs)的污染特征与生态风险评估 |
| 摘要点击 4841 全文点击 626 投稿时间：2021-12-08 修订日期：2022-01-01 |
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| 中文关键词 第三排水沟 药物和个人护理品(PPCPs) 水质指标 污染特征 生态风险 |
| 英文关键词 the Third Drain pharmaceuticals and personal care product (PPCPs) water quality index pollution characteristic ecological risk |
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| 中文摘要 |
| 为了探究宁夏第三排水沟中药物和个人护理品（PPCPs）的污染特征与潜在生态风险，采用固相萃取-超高效液相色谱串联质谱法对第三排水沟中14种PPCPs进行检测分析.结果表明，14种PPCPs在第三排水沟和汇入水样中均有所检出，总浓度范围分别为117.74~1947.64 ng·L-1和63.94~4509.39 ng·L-1.排水沟中吉非罗齐（GEM）、咖啡因（CAF）、阿伏苯宗（BM-DBM）、二苯甲酮-3（BP-3）、3-（4-甲基苯亚甲基）-樟脑（4-MBC）和避蚊胺（DEET）的检出率均达到100%.药物中检出浓度最高的是GEM （7.78~721.84 ng·L-1），其次是CAF （41.74~246.86 ng·L-1）；个人护理品中检出浓度最高的是DEET （3.17~219.91 ng·L-1），其次是BP-3（56.92~150.14 ng·L-1）.不同采样点的PPCPs浓度呈现一定的空间差异，PPCPs总浓度在流经平罗县城后猛然增加，并在该段处达到最大，随后呈现下降趋势.相关性分析表明，4-MBC与COD呈显著的正相关关系（P<0.01），IBU、XMTD、TCC和TCS与NH4+-N呈较明显的正相关关系（P<0.05），DIC、BF、CBZ和DEET与TN呈较明显的正相关关系（P<0.05），表明PPCPs浓度和水质指标密切相关.生态风险评价结果显示DIC、IBU、GEM、CBZ、CAF和BP-3具有高风险，BM-DBM、TCC和TCS具有中等风险. |
| 英文摘要 |
| To investigate the contamination characteristics and potential ecological risks of pharmaceuticals and personal care products (PPCPs) in the Third Drain of Ningxia, 14 PPCPs were detected and analyzed using solid-phase extraction coupled with ultra-high performance liquid chromatography-tandem mass spectrometry. The results showed that these 14 PPCPs were detected in the Third Drain and its confluent streams, with total concentrations of 117.74-1947.64 ng·L-1 and 63.94-4509.39 ng·L-1, respectively. Detection ratios of gemfibrozil (GEM), caffeine (CAF), avobenzone (BM-DBM), benzophenone-3 (BP-3), 3-(4-methylbenzylidene)-camphor (4-MBC), and diethyltoluamide (DEET) were 100% in the drain. The highest-concentration pharmaceutical was GEM (7.78-721.84 ng·L-1), followed by CAF (41.74-246.86 ng·L-1), and the highest-concentration personal care product was DEET (3.17-219.91 ng·L-1), followed by BP-3 (56.92-150.14 ng·L-1). Concentrations of PPCPs at different sampling points exhibited spatial differences. The total PPCPs concentration increased dramatically and reached a maximum value after flowing through Pingluo County, then showed a decreasing trend downstream. Correlation analysis showed that 4-MBC was significantly positively correlated with COD (P<0.01). IBU, XMTD, TCC, and TCS were significantly correlated with NH4+-N (P<0.05). DIC, BF, CBZ, and DEET were significantly correlated with TN (P<0.05). The results indicated that concentrations of PPCPs were closely related to water quality indexes. Risk assessment showed that DIC, IBU, GEM, CBZ, CAF, and BP-3 had high risks, whereas BM-DBM, TCC, and TCS had moderate risks. |
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