本文采用湿法消解，原子吸收火焰法测定猪肝中的铜，原子吸收石墨炉法测定猪肝中的镉和铬；采用干法灰化，原子吸收火焰法测定猪饲料中铜含量。通过对惠州地区市售的猪肝（30份）和猪肉（30份）进行检测，发现猪肝和猪肉中的镉含量为0.01~0.16 mg/kg，铬含量为0.10~0.88 mg/kg，合格率均为100%；猪肝中铜含量为4.90~78.9 mg/kg，合格率仅为50.0%，猪肉中铜含量为0.23~0.87 mg/kg，合格率为100%；生长育肥猪后期配合饲料中铜含量0.29~69.0 mg/kg，合格率95.0%。调查表明惠州地区市售猪肉中铜、镉和铬元素残留量合格，猪肝中镉、铬残留量合格，铜残留量较高；市售育肥后期猪饲料中存在铜严重超标的现象。

Cadmium and Chromium in pork and pork liver was determined by graphite furnace atomic absorption spectrometry. Copper in pork, pork liver and feed was determined by flame atomic absorption spectrometry. The qualified rate of cadmium in pork and pork liver was 100%, the detection range was 0.01~0.16 mg/kg. The qualified rate of chromium in pork and pork liver was 100%, the detection range was 0.10~0.88mg/kg. The qualified rate of copper in pork was 100%, the detection range was 0.23~0.87 mg/kg. The qualified rate of copper in pork liver was 50.0%, and the detection range was 4.90~78.9 mg/kg. The content of copper in 20 pig feed for fattening hog was 0.29~69.0 mg/kg and the qualified rate was 95%. It was suggested that the situation of copper remains in pork liver was not optimistic, and the copper content exceeded standard was one twentieth in pig feed.