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摘要
In order to understand the antibiotic residues in farmland soil with long-term application of livestock manure, the concentration characteristics and ecological risk of three tetracycline antibiotics (TCs) in soil around large piggery in black soil area of Jilin Province were studied. The results showed that the mean concentration of ΣTCs in soil was 1.31mg/kg, and the average concentrations in different types of soil were: mollisols > lesslve > chernozem. The mean concentration of oxytetracycline (OTC), tetracycline (TC) and chlortetracycline (CTC) were 0.69mg/kg, 0.48mg/kg and 0.14mg/kg, respectively, with the detection rate in the range of 42.86% to 71.43%. OTC, TC and CTC showed different distribution characteristics in different types of soil, which were mainly affected by multiple factors such as soil properties, antibiotic properties, application amount and years of livestock manure. The risk quotients of OTC, TC and CTC were 3.06, 0.85 and 0.60, respectively, and OTC was at a high ecological risk level. The three TCs exceeded the trigger value of ecological toxicity effect in varying degrees, and the ecological toxicity risk was higher. The long-term application of pig manure resulted in the accumulation of tetracycline antibiotics in soil and high ecological risk.
- 出版日期2023
- 单位中国科学院大学
