Pollution characteristics and ecological risk assessment of Pharmaceuticals and Personal Care Products ( PPCPs) in Beiyun river and groundwater of North Canal
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Abstract:
The contamination of 13 PPCPs( pharmaceuticals and personal care pro ducts) were analyzed in 5 river samples and 43 groundwater samples using RQ model to evaluate the potential risk during dry and rainy season to investigate the pollution characteristics and ecological risk of PPCPs in Beiyun river and groundwater of the North Canal. The results revealed that 11 out of the 13 target PPCPs were detected in Beiyun river and g roundw ater except for SMM ( Sulfamonomethoxine) and CAP ( Chloramphenicol) , SMZ ( Sulfamet hazine) was the dominant contaminant with concentr ations up to 1 373. 1 ng/ L. Concentrations of PPCPs were higher in the groundwater than river ( w ith a lower detection frequencies) , and and the mass concentr ation of pollut ants decreases as the distance from the river increases. Concentr ations of PPCPs were higher in confined aquifer than unconfined aquifer; total concentration of PPCPs in wet season was sig nificantly higher than dry season. The results of the risk assessment indicated that IBU ( Ibuprofen) may pose high risks to the eco logical environment while other PPCPs were found to be of medium or low ecological risk in the study area.
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