Difference between the two methods were both nonsignificant.[Conclusion] The improved iodometric method can be used for rapid screening of sulfur dioxide in foods.

• [方法]随机采取水溶性食品94件和水不溶性食品99件，分别用改良碘量法和国标法进行检测，比较两种方法检测食品中二氧化硫的符合性。