Methods: 172 Samples produced by 20 companies were detected by hygienic bacteriumon, Pathogenic Bacteria, acid value, Peroxide value, total arsenic and lead.

• 方法：抽检昆山地区20家食品生产单位172份糕点类食品样本进行卫生细菌、致病菌、酸价、过氧化值、总砷、铅等检测。