为了解沧州市售肉类中重金属污染情况,于2010—2012年选择该市具有代表性的各大农贸市场、超市和专营店进行随机采样,采集猪肉、猪肾、猪肝、牛肉、羊肉、羊肾样品分别为240、90、36、60、60、14件,共计500件。依据GB/T 5009—2003《食品卫生检验方法理化部分》,用石墨炉原子吸收法测定样品中铅、汞和镉的含量。实验室内质控采用空白试验、平行样、标准物质样品,加标回收率为85%~110%,检出限为铅<0.025 mg/kg,镉<0.002 5mg/kg,汞<0.000 5 mg/kg。依据GB 2762—2005《食品 In order to understand the situation of heavy metals pollution in the meat of Cangzhou City, we selected the representative farmers market, supermarkets and specialty stores in the city from 2010 to 2012 to collect random samples of pork, pig kidney, pig liver, beef, lamb, Sheep kidney samples were 240,90,36,60,60,14, a total of 500 pieces. According to GB / T 5009-2003 “Physical and chemical test methods for food hygiene,” graphite furnace atomic absorption spectrometry was used to determine the contents of lead, mercury and cadmium in the samples. Laboratory tests were performed on blank control, parallel samples and standard samples with standard recoveries of 85% -110%. The limits of detection were lead <0.025 mg / kg, cadmium <0.002 5 mg / kg, mercury <0.000 5 mg / kg. According to GB 2762-2005 "Food