1材料与方法1.1样品的采集2010年按计划在济南市市区内主要超市、农贸市场、路边摊位和蔬菜批发市场进行采样,包括粮食、蛋及蛋制品、海产品、蔬菜、乳制品、蜜饯、调味品、炒货(白南瓜子)、金针菇、熟肉制品、酱腌菜等12类,样品总数257份。 1 Materials and Methods 1.1 Collection of Samples Sampling was conducted in 2010 in the major supermarkets, farmers’ markets, roadside stalls and wholesale markets of vegetables in urban areas of Jinan City as planned in 2010, including grain, egg and egg products, seafood, vegetables, dairy products, Condiments, condiments, roasted seeds and nuts (white pumpkin seeds), Flammulina velutipes, cooked meat products, pickles and other 12 categories, the total number of 257 samples.