化学
过氧化氢
碳酸氢盐
钴
化学发光
无机化学
硫酸铵
抗坏血酸
硫脲
碳酸盐
光化学
食腐动物
核化学
激进的
有机化学
食品科学
作者
Shuxuan Liang,Lixia Zhao,Botao Zhang,Jin‐Ming Lin
摘要
Chemiluminescence (CL) phenomena of carbonates or bicarbonates of potassium, sodium, or ammonium with hydrogen peroxide in the presence of cobalt sulfate were reported. After cobalt(II) solution was injected into the mixture of carbonate/bicarbonate and hydrogen peroxide, a CL signal was given out briefly. The CL conditions of these systems were optimized. The CL reaction mechanisms were studied experimentally by examining the spectrum emitted by the CL system and the effect of various free radical scavengers on CL emission intensity. The results showed that the maximal emission wavelengths of the CO32-−H2O2−Co2+ and HCO3-−H2O2−Co2+ systems were 440 and 490 nm, respectively. As a result, a radical scavenger of ascorbic acid, thiourea, and superoxide dismutase exhibited different effects on these CL systems. The different CL mechanisms involving the carbon dioxide dimer and the oxygen dimer were revealed, respectively.
科研通智能强力驱动
Strongly Powered by AbleSci AI