萃取溶液pH值对纺织品禁用偶氮染料回收率的影响  被引量:4

The Influences of pH Value of the Extract Solution on the Banned Azo Dyes Recovery

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作  者:朱伟飞 方方 李小兰 

机构地区:[1]广东省东莞市质量监督检测中心,广东东莞523808

出  处:《纺织科技进展》2015年第3期70-72,共3页Progress in Textile Science & Technology

摘  要:为了提高纺织品禁用偶氮染料测定的效率、节省检测成本,改进了GB/T 17592—2011《纺织品禁用偶氮染料的测定》中的前处理方法,采用直接液液萃取的提取方法,研究了不同pH值条件下各禁用偶氮物质的回收率。结果表明:2,4-二氨基苯甲醚和2,4-二氨基甲苯的回收率与萃取液的pH值成正比,其他物质则无明显差异,改进后的样品前处理时间缩短30%以上,回收率提高300%以上。In order to improve the efficiency of the textiles banned azo dyes determination and save test cost, GB/T 17592--2011 textiles-determination of the banned azo dyes pretreatment method was improved using the method of direct liquid extraction. The dif- ferent pH values were studied under different conditions of azo material recovery rate. The results showed that the recovery rate of 2, 4-diamino-anisole and 2,4-diaminotoluene were proportional to the pH value of extraction solution, but there were no significant differences in other materials. The preparation time of improved sample was shortened more than 30%, and the recovery rate in- creased more than 300%.

关 键 词:纺织品 禁用偶氮染料 PH值 回收率 

分 类 号:TS193.21[轻工技术与工程—纺织化学与染整工程]

 

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