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作 者:王良[1,2] 马春宏[1,2] 李华明[2] 闫永胜[2]
机构地区:[1]吉林师范大学化学学院,吉林四平136000 [2]江苏大学化学化工学院,江苏镇江212013
出 处:《分析科学学报》2010年第1期39-42,共4页Journal of Analytical Science
基 金:国家自然科学基金(No.20777029;20676057);吉林省教育厅基金(No.20070156)
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。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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