摘要
为了快速准确地测定烟用聚丙烯丝束滤棒成型水基胶中的氨含量,考察了该胶的破乳方法及连续流动分析条件。结果表明：①用氯化钠饱和的2.5%硫酸溶液处理胶样,得到可测定氨的澄清滤液;②适宜的连续流动测定条件为：流通池光径50 mm,进样时间90 s,冲洗时间90 s;③方法的检出限和定量限分别为0.22μg/mL和0.73μg/mL,回收率99.02%~102.89%,CV〈2%。该方法适合于烟用聚丙烯丝束滤棒成型水基胶中残余氨含量的测定。
In order to rapidly and accurately determine the ammonia in water-based adhesive for polypropylene tow filter rod forming,the method for demulsification of the adhesive and the conditions for continuous flow analysis were investigated.The results showed that： 1） The adhesive sample was treated with saturated sodium chloride in 2.5% sulfuric acid solution to obtain the clear filtrate for ammonia determination;2） The proper conditions for continuous flow analysis were the optical path of flow cell 50 mm,duration for sample injecting and cleaning 90 seconds each;3） The limit of detection and the limit of quantification of ammonia were 0.22 and 0.73 μg/mL,respectively;the recovery ranged from 99.02% to 102.89% with the CV below 2%.It was concluded that this method was suitable for the determination of ammonia in water-based adhesive.
出处
《烟草科技》
EI
CAS
北大核心
2011年第9期34-36,共3页
Tobacco Science & Technology
基金
川渝中烟工业公司基金项目"烟用聚丙烯丝束滤棒成型胶粘剂中残余氨含量的测定"(2011-05)
关键词
聚丙烯滤棒
水基胶
氨
连续流动分析法
Polypropylene tow filter rod
Water-based adhesive
Ammonia
Continuous flow analytical method
