光动力学法测定食品中的亚硫酸盐

Determination of Sulfites in Food by Photochemical Analysis

以亚硫酸盐与光化学反应产生碘的反应， 用于某些食品中痕量亚硫酸盐的测定． 标准加入回收率在 ９８％ ～１０５％ 之间， 相对标准偏差低于 ４％

The reaction of sulfites with iodine produced by photochemical reaction was studied. This reaction can be applied to the analysis of trace amounts of sulfites in food and other samples. This method has been successfully applied to the analysis of sulfites in food with recovery between 98%~105% and RSD less than 4%.