作　　者： ; ; ;

机构地区： 陕西师范大学化学化工学院

出　　处： 《应用化学》 2004年第12期1326-1328,共3页

摘　　要： A catalytical spectrophotometry method for the quantitative analysis of trace sodium sulfoxylate formaldehyde in foods is proposed based on the catalytical activity of sodium sulfoxylate formaldehyde in the oxidation reaction of Brilliant cresyl blue by BrO - 3 in H 2SO 4. The concentration range where the response in linear is from 5×10 -9 to 1.52×10 -5 g/mL, with a detection limit of 2×10 -9 g/mL. The suggested method was satisfactorily used to determine trace sodium sulfoxylate formaldehyde in foods. A catalytical spectrophotometry method for the quantitative analysis of trace sodium sulfoxylate formaldehyde in foods is proposed based on the catalytical activity of sodium sulfoxylate formaldehyde in the oxidation reaction of Brilliant cresyl blue by BrO - 3 in H 2SO 4. The concentration range where the response in linear is from 5×10 -9 to 1.52×10 -5 g/mL, with a detection limit of 2×10 -9 g/mL. The suggested method was satisfactorily used to determine trace sodium sulfoxylate formaldehyde in foods.

关 键 词： 甲醛次硫酸钠 催化光度法 灿烂甲酚蓝 食品分析

领　　域： [理学] [理学]