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为了解西宁市地区农贸市场中部分鸡肉、牛肉、羊肉、猪肉中重金属铅(Pb)、砷(As)、汞(Hg)、镉(Cd)的污染状况。试验采用石墨炉原子吸收分光光度法测定样品中铅、镉的含量;采用原子吸收火焰法测定样品中砷、汞的含量。4种禽畜肉中Pb、As、Hg、Cd的含量平均值范围分别为0.017 80~0.062 20 mg/kg、0.003 44~0.021 70 mg/kg、0.000 204 6~0.000 836 0 mg/kg、0.000 68 mg/kg~0.001 86 mg/kg。结果表明:西宁市市售鸡肉、牛肉、羊肉、猪肉中重金属铅、砷、汞、镉的含量均未超过国家限量标准,市场抽检合格率为100%。
In order to understand the pollution status of heavy metal lead (Pb), arsenic (As), mercury (Hg) and cadmium (Cd) in some chicken, beef, mutton and pork in the farmers market in Xining area. The contents of lead and cadmium in the samples were determined by graphite furnace atomic absorption spectrometry. The contents of arsenic and mercury in the samples were determined by flame atomic absorption spectrometry. The average content of Pb, As, Hg and Cd in four kinds of livestock meat were 0.017 80 ~ 0.062 20 mg / kg, 0.003 44 ~ 0.021 70 mg / kg, 0.000 204 6 ~ 0.000 836 0 mg / kg, 0.000 68 mg /kg~0.001 86 mg / kg. The results showed that the content of heavy metal lead, arsenic, mercury and cadmium in chicken, beef, mutton and pork on the market in Xining did not exceed the national limit standards, and the pass rate of sampling in the market was 100%.