With sulphur-fumigated Chinese medicinal materials (Fritillaria thunbergii , Isatis #utigotica , Asparagus cochinchinensis and Poria cocos ) as the test materials, sulfur dioxide or sulfite residue was determined by...With sulphur-fumigated Chinese medicinal materials (Fritillaria thunbergii , Isatis #utigotica , Asparagus cochinchinensis and Poria cocos ) as the test materials, sulfur dioxide or sulfite residue was determined by the method in Chinese Pharmacopoeia (2015 edition) and titration-fluorescence spectrometry, respec- tively. The results showed that there were significant differences in measured value between titration-fluorescence spectrometry and phmmacopoeia method. The t result of titration-fluorescence spectrometry was much closer to the actual content of sulfur dioxide in Chinese medicinal materials. Thus, titration-fluo- rescence spectrometry had higher application value展开更多
Sulfur dioxide has been found to decrease the chemiluminescence of luminol-iodine system.A new determination method for sulfur dioxide in atmosphere is developed by applying this reaction to a flow injection gas diffu...Sulfur dioxide has been found to decrease the chemiluminescence of luminol-iodine system.A new determination method for sulfur dioxide in atmosphere is developed by applying this reaction to a flow injection gas diffusion separation system.This permits the determination of sulfur dioxide selectively and rapidly.展开更多
基金Supported by Key Technology R&D Program of Hebei Department of Science and Technology(15272506)Scientific Research Project of Hebei Administration of Traditional Chinese Medicine(2015080,2017105)+1 种基金Chinese Medicinal Material Innovation Team Project of Hebei Agricultural Industry Research System(7000120081)National Key Laboratory of Genuine Regional Drug and Significant Increase or Decrease Project of Central Level Project(2060302)
文摘With sulphur-fumigated Chinese medicinal materials (Fritillaria thunbergii , Isatis #utigotica , Asparagus cochinchinensis and Poria cocos ) as the test materials, sulfur dioxide or sulfite residue was determined by the method in Chinese Pharmacopoeia (2015 edition) and titration-fluorescence spectrometry, respec- tively. The results showed that there were significant differences in measured value between titration-fluorescence spectrometry and phmmacopoeia method. The t result of titration-fluorescence spectrometry was much closer to the actual content of sulfur dioxide in Chinese medicinal materials. Thus, titration-fluo- rescence spectrometry had higher application value
文摘Sulfur dioxide has been found to decrease the chemiluminescence of luminol-iodine system.A new determination method for sulfur dioxide in atmosphere is developed by applying this reaction to a flow injection gas diffusion separation system.This permits the determination of sulfur dioxide selectively and rapidly.