| 广州市北郊蔬菜基地土壤四环素类抗生素的残留及风险评估 |
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| 引用本文： | 朱秀辉,曾巧云,解启来,丁丹,茹淑玲.广州市北郊蔬菜基地土壤四环素类抗生素的残留及风险评估[J].农业环境科学学报,2017,36(11):2257-2266. |
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| 作者姓名： | 朱秀辉 曾巧云 解启来 丁丹 茹淑玲 |
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| 作者单位： | 华南农业大学资源环境学院,广州,510642 |
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| 基金项目： | 国家自然科学基金项目（41471215）；广东省科技计划项目（2016A020210107） |
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| 摘 要： | 为了解蔬菜基地土壤中四环素类抗生素的残留及风险状况,采集了广州市北郊20个蔬菜基地30个土壤样品,利用固相萃取(SPE)-高效液相色谱-串联质谱(HPLC-MS/MS)分析方法,检测土壤中四环素类抗生素(四环素、土霉素和金霉素)的残留状况,并引入层次分析法、风险商值法和指示克里金法,分析研究区域土壤抗生素的主要来源、生态风险以及空间分布。结果表明,广州市北郊蔬菜基地土壤四环素(Tetracycline,TC)、土霉素(Oxytetracycline,OTC)和金霉素(Chlorotetracycline,CTC)的含量范围分别为ND~30.37μg·kg~(-1)、ND~903.13μg·kg~(-1)和ND~103.02μg·kg~(-1),其平均值分别为5.64、38.39μg·kg~(-1)和8.92μg·kg~(-1),3种TCs在土壤中的平均含量高低顺序为:OTCCTCTC。粪肥是土壤3种TCs的主要来源,其贡献率大于50%;其次是商业性有机肥,其权重系数为24%左右。广州市北郊蔬菜基地土壤中3种TCs的生态风险整体较低,但西部部分区域处于中、高风险等级,首要防控污染物为OTC,其次是CTC。
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| 关 键 词： | 抗生素 土壤污染 广州市北郊 蔬菜基地 风险评估 |
| 收稿时间： | 2017/4/12 0:00:00 |
Residues and risk assessment of tetracycline antibiotics in vegetable-growing soils from suburban areas of northern Guangzhou |
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| ZHU Xiu-hui,ZENG Qiao-yun,XIE Qi-lai,DING dan and RU Shu-ling.Residues and risk assessment of tetracycline antibiotics in vegetable-growing soils from suburban areas of northern Guangzhou[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2017,36(11):2257-2266. |
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| Authors: | ZHU Xiu-hui ZENG Qiao-yun XIE Qi-lai DING dan and RU Shu-ling |
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| Institution: | College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China,College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China,College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China,College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China and College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China |
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| Abstract: | From 20 different vegetable-growing farms in suburban areas of northern Guangzhou city, 30 soil samples were collected.They were analyzed for the contents of three different tetracycline-based antibiotics:tetracycline(TC), oxytetracycline(OTC), and chlorotetra-cycline(CTC), using a solid phase extraction(SPE)method and high performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS). The results showed that the concentrations ranged between ND~30.37(mean:5.64), ND~903.13(mean:38.39), and ND~103.02(mean:8.92)μg·kg-1 for TC, OTC, and CTC, respectively. Source analysis using an analytic hierarchy procedure indicated that ma-nure used for growing vegetables was the principle source, accounting for more than 50%of the three antibiotics, whereas commercial organ-ic fertilizers were the secondary source, accounting for 24%. Risk assessment using a combined approach of risk quotients and Kriging showed that the three antibiotics have low risks, with a few hotspots located in the western part of the studied area, where OTC possessed the highest risk, followed by CTC. |
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| Keywords: | antibiotic soil pollution suburban district of north Guangzhou City vegetable production farms risk assessment |
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