我国北方典型区域地下水中PPCPs赋存状况及潜在风险

Occurrence of Pharmaceuticals and Personal Care Products, and Their Associated Environmental Risks in Groundwater of North China

采集海河流域15个地下水样品,松辽流域15个地下水样品,应用固相萃取、超高效液相色谱–串联三重四极杆质谱联用技术,对地下水中23中药物与个人护理品(PPCPs)进行检测,检测结果表明,海河流域地下水中有10种PPCPs检出,其检出率范围为6.67%~46.7%,土霉素和金霉素的检出率最高,但金霉素的平均检出浓度为最高,为4.16 ng/L。松辽流域地下水中有9种PPCPs检出,其检出率范围为6.67%~66.7%,土霉素的检出率最高,为66.7%;咖啡因平均检出浓度最高,为6.98 ng/L。应用风险商值模型对检出的PPCPs进行潜在风险评价,发现海河流域与松辽流域地下水中PPCPs均处于低风险水平。

Fifteen groundwater samples were collected in two cities of Haihe river basin and fifteen groundwater samples were collected in one city of Song-Liao river basin in 2017. Twenty-three pharmaceutical and personal care products were extracted from groundwater samples by solid phase extraction (SPE) and then analyzed by high-performance liquid chromatography coupled with tandem mass spectrometry (UPLC-MS/MS). A total of thirty groundwater samples were collected in 2017 in Haihe River basin and Song-Liao River basin. In Haihe River basin, ten of twenty-three PPCPs were detected with the range frequency 6.67%~46.7%. The PPCPs with highest frequency and mean concentration were oxytetracycline and chlortetracycline, respectively. In Song-Liao River basin, nine of twenty-three PPCPs were detected with the range frequency 6.67%~66.7%. The PPCPs with highest frequency and mean concentration were oxytetracycline and caffeine, respectively. An environment risk assessment for the maximum detection concentration was undertaken using calculated risk quotients and indicated a low risk from 23 PPCPs in groundwater of Haihe River basin and Song-Liao River basin.