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| Occurrence and risk assessment of antibiotics in typical chicken farms and surrounding soils |
| Received:July 25, 2019 |
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| KeyWord:antibiotics;pollution characteristics;risk assessment;chicken farm |
| Author Name | Affiliation | E-mail | | TU Qi | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | XU Yan | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | xuyan@aepi.org.cn | | LI Er-hu | Tianjin Agricultural Ecological Environment Monitoring and Agricultural Product Quality Testing Center, Tianjin 300193, China | | | SHI Rong-guang | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | winsomesky@163.com | | ZHENG Xiang-qun | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | GENG Yi-gong | Tianjin Agricultural Ecological Environment Monitoring and Agricultural Product Quality Testing Center, Tianjin 300193, China | |
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| Abstract: |
| In order to understand the occurrence and ecological risks of antibiotics in livestock and poultry farms, five typical large-scale chicken farms in Tianjin were selected to collect fresh chicken manure, nearby soil, and clean control soil away from the chicken farms. The occurrence of five types of veterinary antibiotics[sulfonamides(SAs), tetracyclines(TCs), quinolones(QLs), macrolides(MAs), and β-lactams(β-lactams) ] was detected and analyzed using the UPLC-MS/MS method. The risk quotient(RQ) method was used to evaluate the ecological risk of antibiotics pollution in the soil environment around the chicken farm, and countermeasures for reducing the typical veterinary antibiotics were proposed. The results showed that the average values of ∑SAs, ∑TCs, ∑QLs, ∑MAs, and ∑β-lactams in fresh chicken manure samples of five typical chicken farms in Tianjin were 4.11, 143.34, 90.46, 258.14, and 4.06 μg·kg-1, respectively. The detected concentrations of ∑SAs, ∑TCs, ∑QLs, ∑MAs, and ∑β-lactams in soil samples surrounding the chicken farm and control soil samples far from the chicken farm were 3.15~8.51, 9.92~133.95, 2.48~13.72, 0.03~2.33, and 0.01~0.40 μg·kg-1, respectively. The redundancy analysis showed that TP, pH, and TN had a significant influence on the concentration of antibiotics in the soil samples, and accounted for 56.35% of the total explanatory variance of the antibiotic concentration differences. The results of the ecological risk assessment showed that sulfadiazine and sulfamethoxazole had the highest ecological risks in the soil surrounding the chicken farm, all of which showed high risk. In general, the RQ value of the soil surrounding the chicken farm was higher than that of the control soils far from the chicken farm. The difference in the RQ showed that there were high ecological risks of the four types of antibiotics near the soil of chicken farms a and b. Therefore, the antibiotics pollution in the farm and its surrounding soil should be controlled from the source, and key technologies for antibiotics reduction should be determined in the process of livestock manure pollution to reduce the ecological risk of antibiotics. |
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