inOccurrence, Distribution and Ecological Risk of Antibiotics in Surface Water of the Gonghu Bay, Taihu Lake

WU Xu-yue1,2 ZOU Hua1,2 ZHU Rong1 WANG Jing-guo1

(1.School of Environment and Civil Engineering, Jiangnan University, Wuxi, China 214122)
(2.Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou, China 215009)

【Abstract】In order to assess the contamination degree and ecological risk of antibiotics in Gonghu Bay of Taihu Lake, the contamination characteristics of four kinds of antibiotics (tetracycline, quinolones, sulfonamides and macrolides) in surface water of the Gonghu Bay were analyzed using high performance liquid chromatography and tandem mass spectrometry (HPLC-MS/ MS). The results showed that 13 of the 16 target antibiotics were detected in the Gonghu Bay. The mass concentrations of the 13 antibiotics ranged 0. 005–4.720 μg·L−1, and OTC was of the highest concentration. The detected mass concentration of antibiotics was also different between the northern and the southern parts of Gonghu Bay, and the mass concentration of tetracycline in the northern part was higher than that in the southern part. Moreover, the concentrations of quinolones and sulfonamides in the southern part were larger than those in the northern part. The potential ecological risks of the detected antibiotics were assessed via using the risk quotients (RQs) approach. The preliminary results showed that 5 kinds of antibiotics: OTC, NOR, OFL, CIP and ENR were at high risk, accounting for 38. 5% and 4 kinds of antibiotics TC, CTC, ROX and SMX were at medium risk, accounting for 30.8% in the antibiotics detected in Gonghu Bay, while the others (SMR,SMP,SQX,TMP) were at low risk. Ecological risk assessment revealed that some risks were present in antibiotics in the Gonghu Bay. The tetracyclines and quinolones were particularly prominent, which should draw enough attention, and corresponding preventive measures should be taken as well.

【Keywords】 Gonghu Bay; surface water; antibiotics; pollution characteristics; ecological risk assessment;

【DOI】

【Funds】 Scientific Significant Specialties of National Water Pollution Control and Treatment (2012ZX07503-002)

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This Article

ISSN:0250-3301

CN: 11-1895/X

Vol 37, No. 12, Pages 4596-4604

December 2016

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Article Outline

Abstract

  • 1 Materials and methods
  • 2 Results and discussion
  • 3 Conclusions
  • References