Results Benzoyl peroxide and benzoic acid existed in 64 of 74 samples,benzoyl peroxide existed in 7 samples of 74 samples,no benzoyl peroxide and benzoic acid in 3 samples of 74 samples.

• 结果74份面粉及面粉制品样品中64份同时含有过氧化苯甲酰、苯甲酸,7份只检出过氧化苯甲酰,3份均未检出过氧化苯甲酰、苯甲酸。结论过氧化苯甲酰在面粉中使用广泛。