用离子选择性电极法测定烟用聚丙烯丝束滤棒成型水基胶中的氨氮  

Determination of ammonia nitrogen in water-borne adhesive applied on polypropylene fiber tow filter rod using ammonia gas-sensing electrode method

作　　者：黎洪利 陶文生 朱立军 文鹏 蔡利 

机构地区：[1]重庆烟草工业有限责任公司,重庆市南岸区南坪东路2号400060 [2]川渝中烟技术研发中心

出　　处：《中国烟草学报》2013年第4期1-4,共4页Acta Tabacaria Sinica

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)

摘　　要：通过对比分析，选择氨气敏电极法快速测定烟用聚丙烯丝束滤棒成型水基胶中的氨氮含量，考察了该方法的测定条件及影响因素。结果表明：氨气敏电极具有很高的选择性，在强碱性条件下，采用EDTA作掩蔽剂，几乎所有无机离子对测定无影响；部分挥发性胺对测定有明显干扰，表面活性剂含量低于0．1％时无干扰；最优条件下方法的定量限0．67μg／mL，回收率96．1％～104．9％，RSD〈4％。Ammonia gas-sensing electrode method was developed to determine ammonia nitrogen in water-borne adhesive applied on polypropylene fiber tow filter rod. Results showed that： 1） the method was highly selective. Almost all other inorganic ions showed no influence on determination under strong alkaline conditions with EDTA as masking agent; 2） significant interferences from some volatile amines were observed. There were some interferences if surfactants contents were higher than 0.1% ; 3） under optimum conditions, the quantification limit was 0.67 μg/mL and the recovery was 96.1% -104.9% . RSD was less than 4% .

关 键 词：氨气敏电极 聚丙烯滤棒 水基胶 氨氮 

分 类 号：TS47[农业科学—烟草工业] O657.1[理学—分析化学]