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中文摘要：
建立了离子液体溶剂浮选四环素类（TCs）抗生素的新方法。以1-丁基-3-甲基咪唑六氟磷酸盐（[Bmim]PF。）和乙酸乙酯（EA）的混合溶剂（V／V=1）为浮选剂，以AI（111）为捕集剂，在pH=6．7条件下，分离富集环境水样中四环素（TC）、土霉素（OTC）、金霉素（CTC）三种四环素类抗生素，并用紫外-可见分光光度法测定总含量。方法线性范围为0．2～10．3μg·mL^-1，表观摩尔吸光系数ε380=3．8×10^5L·mol^-1·cm^-1，加标回收率达到94．5％～102．2％，相对标准偏差RSD〈3．76％（n=5）。该方法适合于环境水样中痕量TC、OTC、CTC抗生素总含量的分离分析。
英文摘要：
A new method was established for separation/enrichment of the trace based on ionic liquid solvent flotation. The mixture of ionic liquid of tetracyclines （TCs） antibiotic 1-butyl-3 methylimidazolium hexafluorophosphats （[Bmim]PF6） and Ethylacetate（EA） was used as floatation solvent, aluminum ion as the trapping agent. At pH=6.7, TC, OTC and CTC antibiotic were seperated and enrichad and the total content was determined by UV-Vis spectrophotometry. The linear range was 0.2～10.3 μg·mL^-1. The apparent molar absorptivity was 3.8×10^5 L·mol^-1·cm^-1. The recoveries were 94. 5%～102. 2% and the RSDs were 3.76%. This method is suitable for determining the total quantity of the trace tetracyclines antibiotic in water sample.
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