摘要
以荧光增白剂VBL为标准物质,高纯水为萃取液,通过紫外分光光度法对卫生用品顶膜所含的可迁移荧光增白剂VBL的含量进行研究,并通过改变萃取液的p H、萃取浸泡的时间与温度,研究不同的萃取条件对一次性卫生用品中荧光增白剂VBL的迁移情况的影响。结果表明:荧光增白剂VBL迁移时间越长,迁移量越高,萃取2 h时会有一个突跃;随着迁移温度的升高,迁移量增加;酸性会抑制荧光增白剂的迁移,而碱性则加速其迁移。
The content of mobile VBL contained in the top sheet of sanitary pad was studied by ultraviolet spectrophotometry with VBL as standard material and high pure water as extract. The pH value of the extracted liquid, the extraction time and the temperature were considered to study the effects of different extraction conditions on the migration of fluorescent whitening agent VBL in disposable sanitary pad. ~he results showed that the migration of fluorescent whitening agent VBL increased with the extracting time ,and there was a jump after 2 h extraction. Afterwards, the migration increased with the increase of migration temperature. In addition, the acidity inhibits the migration of the optical brightener, while the alkaline accelerates its migration.
出处
《纸和造纸》
2017年第3期58-61,共4页
Paper and Paper Making
基金
浙江省质量技术监督系统科研项目"一次性使用妇幼卫生用品有害物检测方法以及安全性评价的研究"
关键词
荧光增白剂VBL
紫外分光光度法
迁移性
卫生巾
fluorescent whitening agent VBL
ultraviolet spectrophotometer method
migration rule
sanitary pad
