Through extracting lead and then lead measurement, result has shown that extracting lead by either potassium iodide chel通过萃取、测试、比较，结果表明：碘化钾法中使用的碘化钾和抗坏血酸络合，4-甲基戊酮－2(MIBK)萃取法比较适合食品分析。