【摘要】 <正> 亚硝酸盐是肉食品加工过程中的优良发色剂,但与致癌物质亚硝胺的生成密切有关。对于亚硝酸盐的分析,目前除了比色法外,气相色谱法日趋用于微量与痕量分析。近本武次等人让亚硝酸离子通过重氮反应衍生出对溴氯苯进入电子捕获检测器进行测定,灵敏度大为提高。本文则根据不同卤化物在电子捕获检测器上克分子响应值是碘>溴>氯的现象,试图使亚硝酸离子通过重氮反应衍生出响应值更大的碘苯,从而获得更高的灵敏度。结果是更多还原

【Abstract】 An attempt is made to use the diazotization of No to yield the iodo benzine which is highly responsive to the electron-arresting detector.so as to obtain a highly sensitive method for determining NO₂^-. The detection limit of NO₂^- s 0.5 ng/ml. The method gives almost the same results as that of the colorimetry.It’s precision is 1.57PPM.更多还原