Electron spin resonance trapping technique with phenyl t-butyl nitrone (PBN)have been used to study the process of electroreduction of p-toluene sulfonamide at mercury electrode. The results showed that the reaction i...Electron spin resonance trapping technique with phenyl t-butyl nitrone (PBN)have been used to study the process of electroreduction of p-toluene sulfonamide at mercury electrode. The results showed that the reaction is a free radical one. p-toluene/benzyl radicals formed yia a stage of detaching sulfonamide group have been identified by the hyperfine spectrum of the radical adducts.展开更多
光导纤维化学传感器(Fiber Optic Chemical Sensor)又称光极(Optrode),是八十年代兴起的一种灵敏度高,可连续、自动遥测的微量和痕量分析技术,此类传感器与电极相比具有以下突出优点:(1)光纤及探头均可微型化,加之良好的柔韧性和不带电...光导纤维化学传感器(Fiber Optic Chemical Sensor)又称光极(Optrode),是八十年代兴起的一种灵敏度高,可连续、自动遥测的微量和痕量分析技术,此类传感器与电极相比具有以下突出优点:(1)光纤及探头均可微型化,加之良好的柔韧性和不带电的安全性,使之为生理医学和临床医学提供了一种新的研究手段;(2)光纤传输功率损耗小,传输信息容量大,抗电磁干扰,且耐高温,防腐蚀,使之可用于远距离遥测和某些特殊环境的分析;(3)可应用多波长和时间分辩技术来提高方法的选择性。展开更多
文摘Electron spin resonance trapping technique with phenyl t-butyl nitrone (PBN)have been used to study the process of electroreduction of p-toluene sulfonamide at mercury electrode. The results showed that the reaction is a free radical one. p-toluene/benzyl radicals formed yia a stage of detaching sulfonamide group have been identified by the hyperfine spectrum of the radical adducts.
文摘光导纤维化学传感器(Fiber Optic Chemical Sensor)又称光极(Optrode),是八十年代兴起的一种灵敏度高,可连续、自动遥测的微量和痕量分析技术,此类传感器与电极相比具有以下突出优点:(1)光纤及探头均可微型化,加之良好的柔韧性和不带电的安全性,使之为生理医学和临床医学提供了一种新的研究手段;(2)光纤传输功率损耗小,传输信息容量大,抗电磁干扰,且耐高温,防腐蚀,使之可用于远距离遥测和某些特殊环境的分析;(3)可应用多波长和时间分辩技术来提高方法的选择性。
