2，4-二氨基甲苯前处理方法的改进研究OACSTPCD
Research on the Improvement of the Pretreatment Method of 2,4-Diaminotoluene
通过对浸泡液、提取溶剂、萃取条件、水的去除方式和过量衍生剂的消除方式的优化，改进2，4-二氨基甲苯的前处理方法。结果表明，用水热提取复合包装膜袋中2，4-二氨基甲苯，浸泡液在加盐和碱条件下用甲苯萃取，浓缩至近干后用三氟乙酸酐进行衍生化，取出后氮吹至干，用乙酸乙酯定容后再用GC－E C D测定，回收率较国标方法萃取明显提高。通过加盐降低二氨基甲苯在水中的溶解度、加碱增大提取液的pH值，有效地提高萃取效率；采用氮吹的方法消除水和过量衍生剂的干扰。改进…查看全部>>
Abstrat:The pretreatment process of 2,4-diaminotoluene was improved by carefully optimization of im-mersion solution,extraction solvent,extraction condition,water removal method and elimination of excess deriv-atives.2,4-diaminotoluene were immersed by boiling water,extracted by toluene with salt and alkali additive, concentrated to nearly dry then derivatived by trifluoroacetic annydride,then blow to dry by nitrogen,definited by ethyl acetate and determinat…查看全部>>
陈旭明;李婷
广东省潮州市质量计量监督检测所，广东潮州521011广东省潮州市质量计量监督检测所，广东潮州521011
轻工纺织
2,4-二氨基甲苯前处理方法改进
2,4-diaminotoluenepretreatment methodimprovement
《包装与食品机械》 2016 (2)
13-16,4
潮州市科技引导计划项目（2014G01）
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