摘要
建立了用氢化物原子荧光法测定反应香精中的重金属汞，考察了前处理方法和原子荧光仪器对实验结果的影响，最后确定了消解试剂为6：2的硝酸和双氧水，微波消解最高温度为210℃，消解时间为25min；原子荧光的还原剂为20g／L的硼氢化钾，载流液为5％的盐酸。用以上最优化条件对反应香精进行测定，得到汞的回收率范围为99．2％～110．0％。
A method for hydride generation atomic fluorescence spectrometry determination of mercury in process flavoring has been proposed, the pre-treatment and the equipment which influenced the experiment were studied and determined, the best conditions were： HNO3 ： H2O2 = 6 ： 2 was used as digestion reagent, the highest temperature of digestion was 210℃, the time was 25min the concentration of used KBH4 was 20g/L as reducer, the carrier was 5 % HCI. Process flavorings were analyzed by the optimizing experimental conditions, the recovery range of mercury was 99.2% to 110.0%.
出处
《香料香精化妆品》
CAS
2008年第1期9-11,共3页
Flavour Fragrance Cosmetics
基金
上海市教委基金资助项目(NO.05D205009)
关键词
氢化物-原子荧光法
反应香精
汞
hydride generation-atomic fluorescence spectrometry process flavoring mercury
