1989年7月15日前后,江苏省太仓县某供销合作社生产资料部仓库先后有7人发生原因不明的脱发和指(趾)甲变薄变脆,并出现“米氏线”,有感染者致甲床炎症化脓。在出现上述症状前,尚有部分人员有过头晕、乏力、食欲减退、恶心、呕吐等症状,严重者出现腓肠肌疼痛和痉挛。经调查,患者的发病与同食仓库内的一口井水有关,并且根据病人的症状、体征提示,似为砷的污染中毒所 Around July 15, 1989, there were 7 unexplained alopecia and fingernails becoming thin and brittle in 7 warehouses of production and information department of a supply and marketing cooperative in Taicang County, Jiangsu Province, and the “Mie Line” To nail bed inflammation suppuration. Before the above symptoms, there are still some people had dizziness, fatigue, loss of appetite, nausea, vomiting and other symptoms, severe gastrocnemius pain and spasm. After investigation, the incidence of patients with the same food warehouse a well of water-related, and according to the patient’s symptoms, signs, seems to be contaminated with arsenic poisoning