| 菜地土壤中磺胺类和四环素类抗生素污染特征研究 |
| 摘要点击 5656 全文点击 2601 投稿时间：2009-01-05 修订日期：2009-02-27 |
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| 中文关键词 蔬菜基地 土壤 抗生素 磺胺类 四环素类 |
| 英文关键词 vegetable fields soils antibiotics sulfonamides tetracyclines |
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| 中文摘要 |
| 利用超声波提取 固相萃取 高效液相色谱紫外检测器，分析了广州、深圳等地菜地土壤中3种四环素类(TCs)和6种磺胺类(SAs)抗生素的污染特征.结果表明，四环素类单个化合物检出率为19.35%～96.77%，平均含量为9.6～44.1 μg/kg，总含量(∑TCs)在ND～242.6 μg/kg之间，平均为84.8 μg/kg，以四环素为主；磺胺类单个化合物检出率为25.81%～93.50%，平均含量为4.9～51.4 μg/kg，总含量(∑SAs)在33.3～321.4 μg/kg之间，平均为121 μg/kg，以磺胺甲唑、磺胺 5 甲氧嘧啶、磺胺二甲嘧啶为主.菜地土壤中抗生素的含量与国外的相当，但检出率较高.不同蔬菜基地土壤中∑TCs和∑SAs的高低次序均为养殖场菜地>无公害蔬菜基地>普通蔬菜基地>绿色蔬菜基地.同一蔬菜基地种植不同蔬菜的土壤中抗生素的种类与含量有较大差异.菜地土壤的抗生素污染问题应引起关注. |
| 英文摘要 |
| The occurrence and distribution of 9 selected antibiotics，that involved with oxytetracycline (OTC)，tetracycline(TC)，chlortetracycline(CTC)，sulfamethazine(SM2)，sulfadiazine(SDZ)，sulfamerazine(SMR)，sulfameter，(SMT)，sulfamethoxazole (SMZ) and sulfadimethoxine(SDM)，were screened at 14 typical vegetable fields located in Shenzhen，Guangzhou，Huizhou，Dongguan regions，with high performance liquid chromatography (HPLC). Data showed that almost all soil samples were unavoidably contaminated with antibiotics. The sum concentration of 3 tetracyclines (TCs) and 6 sulfonamides(SAs) in soils ranged from undetected to 242.6 μg/kg and 33.3 to 321.4 μg/kg respectively，while the medium concentrations were 84.8 μg/kg of tetracyclines and 121 μg/kg of sulfonamides. The individual detectable probability of the two groups of antibiotics ranged from 19.35% to 96.77% (TCs) and from 25.81% to 93.50% (SAs). TC，SMZ，SMT and SM2 were more abundant in soil among the selected antibiotics.The study also suggested that the total amount of both TCs and SAs in different vegetable fields ranked as hoggery vegetable field> non pollution vegetable field> routine vegetable field >greenfood vegetable field，and there should exist some relationship between vegetable planting and antibiotics amount in soil which was related to different fertilization，irrigation and vegetable species. The concentrations of the selected antibiotics are comparable to those reported from the other countries in the world，but the detectable probability of the antibiotics in our study site is higher than that from the reference data. More attention should be paid to antibiotics pollution of soil in vegetable fields. |
