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

发布时间：2018-01-10 03:25

本文关键词：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　出处：《农业环境科学学报》2017年11期 　论文类型：期刊论文

【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。
[Abstract]:In order to understand the residues of tetracycline antibiotics in soils of vegetable base and risk status of Guangzhou city were collected in Beijiao 20 vegetable base 30 soil samples by solid phase extraction (SPE) and high performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS) analysis method, the detection of tetracycline antibiotics in soils (tetracycline, oxytetracycline and chlortetracycline residues) the status, and the introduction of AHP, the risk quotient method and indicator Kriging, analysis of the main sources of regional soil antibiotics, ecological risk and spatial distribution. The results show that the Guangzhou city Beijiao vegetable base soil tetracycline (Tetracycline, TC), oxytetracycline (Oxytetracycline, OTC) and chlortetracycline (Chlorotetracycline, CTC) the content range respectively ND~30.37 g kg~ (-1), ND~903.13 g kg~ (-1) and ND~103.02 g kg~ (-1), the average value is 5.64,38.39 g kg~ (-1) and 8.92 g kg~ (-1), 3 TCs in soil The average content of soil in order to: OTCCTCTC. is the main source of soil manure of 3 TCs, the contribution rate of more than 50%; followed by the commercial organic fertilizer, the weight coefficient is about 24%. Guangzhou city ecological risk of 3 TCs Beijiao vegetable base in soil is low, but the west of the area in the the high level of risk, prevention and control, the primary pollutant OTC, followed by CTC.

【作者单位】：华南农业大学资源环境学院;
【基金】：国家自然科学基金项目(41471215) 广东省科技计划项目(2016A020210107)~~
【分类号】：X53;X82
【正文快照】： 畜禽粪便农用是目前处置方法中最有前景和主要的方法,且绿色蔬菜基地和有机蔬菜基地等经有关机构认证的蔬菜基地也强调有机肥的施用,以改善耕作土壤质量。由于畜禽粪便普遍含有抗生素,且含量较高[1-2],蔬菜基地大量直接使用含有抗生素的畜禽粪便和/或由畜禽粪便堆制的有机肥,

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