Occurrence, source apportionment and ecological risk assessment of thirty antibiotics in farmland system

被引:10
|
作者
Ren, Jinghua [1 ]
Shi, Haochen [2 ,3 ]
Liu, Jianchao [2 ,3 ]
Zheng, Chaoya [2 ,3 ]
Lu, Guanghua [2 ,3 ]
Hao, Shefeng [1 ]
Jin, Yang [1 ]
He, Chao [4 ]
机构
[1] Minist Nat Resources Geol Survey Jiangsu Prov, Technol Innovat Ctr Ecol Monitoring & Restorat Pro, Nanjing 210018, Peoples R China
[2] Hohai Univ, Minist Educ, Key Lab Integrated Regulat & Resource Dev Shallow, Nanjing 210098, Peoples R China
[3] Hohai Univ, Coll Environm, Nanjing 210098, Peoples R China
[4] Tampere Univ, Fac Engn & Nat Sci, Tampere, Finland
关键词
Antibiotics; Ecological risk; Farmland system; Source analysis; Urban-rural scale; RESISTANCE GENES; RIVER DELTA; CHINA; SOILS; MANURE; AREA;
D O I
10.1016/j.jenvman.2023.117546
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Antibiotics are widely used in medical care, livestock production, and aquaculture. However, antibiotic pollution has attracted increasing global concerns due to their ecological risks after entering into environmental ecosystem via animal excretion, effulent from industrial and domestic sewage treatment facilities. In this study, 30 anti-biotics were investigated in soils and irrigation rivers using ultra-performance liquid chromatography-triple quadrupole tandem mass spectrometer. This study evaluated the occurrence, source apportionment, and ecological risks of these target compounds in soils and irrigation rivers (i.e., sediments and water) of farmland system by using principal component analysis-multivariate linear regression (PCA-MLR) and risk quotients (RQ). The concentration range of antibiotics in soils, sediments, and water was 0.38-689.58 ng/g, 81.99-658.00 ng/g, and 134.45-1547.06 ng/L, respectively. In soils, the most abundant antibiotics were quinolones and antifungals with an average concentration of 30.00 ng/g and 7.69 ng/g, respectively, contributing to 40% of total antibiotics. Macrolides were the most frequently detected antibiotics in soils with an average concentration of 4.94 ng/g. In irrigation rivers, quinolones and tetracyclines, the most abundant antibiotics, accounted for 78% and 65% of antibiotics in water and sediments, respectively. Higher antibiotic contamination of irrigation water was pri-marily distributed in highly populated urban areas, while increasing antibiotic contamination of sediments and soils was particularly observed in rural areas. PCA-MLR analysis indicated that antibiotic contamination in soils was mainly ascribed to the irrigation of sewage-receiving water body and manure application of livestock and poultry farming, which cumulatively contributed to 76% of antibiotics. According to RQ assessment, quinolones in irrigation rivers posed high risk to algae and daphnia, contributing 85% and 72% to the mixture risk, respectively. In soils, macrolides, quinolones and sulfonamides were responsible for more than 90% to the mixture risk of antibiotics. Ultimately, these findings can improve our fundamental knowledge on contamination characteristics and source pathways towards risk management of antibiotics in farmland system.
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页数:11
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