1998年 8月 ,我站先后接诊原因不明的腹痛、食欲不振、疲乏无力患者 4例 ,根据职业接触史以及临床症状、体征、实验室检查 ,均诊断为慢性铅中毒。经询问 4名患者均为某乡镇企业铁合金厂工人。据反映该厂在两个月前曾使用 130吨含铅矿石进行冶炼 ,含铅量约为 5 %～ 10 % ,随即我 In August, 1998, I received four cases of unexplained abdominal pain, loss of appetite and tiredness and weakness in our hospital. According to occupational exposure history and clinical symptoms, signs and laboratory tests, I was diagnosed as chronic lead poisoning. After asking 4 patients are a township enterprises ferroalloy factory workers. It is reported that the plant used 130 tons of lead ore two months ago smelting, lead content of about 5% to 10%, then I