摘要
在硫酸介质中，溴酸钾能氧化荧光碱性染料使吖啶黄褪色，而1-萘胺能明显地阻抑这一反应，其阻抑程度与1-萘胺的浓度有关，据此建立了阻抑动力学分光光度法测定痕量1-萘胺的新方法。考察了各种试验条件对灵敏度的影响，优化了最佳试验条件：硫酸1．0mL，溴酸钾2．2mL，吖啶黄2．2mL，反应温度80℃，反应时间16min。用此方法的线性范围为5～100μg/L，检出限为4．94×10^-7g／L。该方法可用于纺织品中1-萘胺的测定，相对标准偏差小于2．2％，加标回收率96．7％-103．0％。
Fluorescent alkali dyes（acridine yellow） could be decolorized via oxidation by potassium bromate in sulfuric acid medium. This reaction could be inhibited greatly by 1-naphthylamine and the inhibition degree correlated with concentration of l- naphthylamine. A new method of determination of 1-naphthytamine by inhibitory kinetic spectrophotometry was established according to the above principle. Effects of testing conditions on sensitivity were discussed and optimum conditions were determined as follows： sulfuric acid 1.0 mL, potassium bromate 2.2 mL, acridine yellow 2.2 mL, reacting at 80 ℃ for 16 minutes. This method could be used for determination of 1-naphthylamine in textiles with linear range 5 - 100 μg/L, detection limit 4.94 × 10^ -7 g/L,standard deviation less than 2.2% and recovery 96. 7% - 103.0%.
出处
《印染》
北大核心
2009年第19期34-36,共3页
China Dyeing and Finishing
关键词
测试
分光光度法
吖啶黄
纺织品
1-萘胺
testing
spectrophotometry
acridine yellow
textiles
1-naphthylamine
