Li Fu-Juan, Gao Li, Li Ling-Yun, Zheng Lan-Xiang, Ma Lan, Yang Gui-Qin
School of Geography and Planning, Ningxia University, Yinchuan 750021, China.
China-Arab Joint International Research Laboratory for Featured Resources and Environmental Governance in Arid Regions, Yinchuan 750021, China.
Huan Jing Ke Xue. 2022 Aug 8;43(8):4087-4096. doi: 10.13227/j.hjkx.202112080.
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 and 63.94-4509.39 ng·L, 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), followed by CAF (41.74-246.86 ng·L), and the highest-concentration personal care product was DEET (3.17-219.91 ng·L), followed by BP-3 (56.92-150.14 ng·L). 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 (<0.01). IBU, XMTD, TCC, and TCS were significantly correlated with NH-N (<0.05). DIC, BF, CBZ, and DEET were significantly correlated with TN (<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.
为研究宁夏第三排水沟中药品及个人护理用品（PPCPs）的污染特征和潜在生态风险，采用固相萃取结合超高效液相色谱 - 串联质谱法对14种PPCPs进行了检测分析。结果表明，在第三排水沟及其汇流溪流中均检测到这14种PPCPs，总浓度分别为117.74 - 1947.64 ng·L和63.94 - 4509.39 ng·L。排水口中吉非罗齐（GEM）、咖啡因（CAF）、阿伏苯宗（BM - DBM）、二苯甲酮 - 3（BP - 3）、3 -（4 - 甲基亚苄基）樟脑（4 - MBC）和避蚊胺（DEET）的检出率均为100%。浓度最高的药品是GEM（7.78 - 721.84 ng·L），其次是CAF（41.74 - 246.86 ng·L）；浓度最高的个人护理用品是DEET（3.17 - 219.91 ng·L），其次是BP - 3（56.92 - 150.14 ng·L）。不同采样点的PPCPs浓度存在空间差异。PPCPs总浓度在流经平罗县后急剧增加并达到最大值，随后在下游呈下降趋势。相关性分析表明，4 - MBC与化学需氧量（COD）显著正相关（<0.01）。布洛芬（IBU）、西咪替丁（XMTD）、三氯生（TCC）和三氯卡班（TCS）与氨氮（NH - N）显著相关（<0.05）。敌草隆（DIC）、溴氟菊酯（BF）、卡马西平（CBZ）和DEET与总氮（TN）显著相关（<0.05）。结果表明，PPCPs浓度与水质指标密切相关。风险评估显示，DIC、IBU、GEM、CBZ、CAF和BP - 3具有高风险，而BM - DBM、TCC和TCS具有中等风险。
