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××厂以余甘果树皮为原料生产含丹宁60～70%的拷胶,自1968年不断扩大生产以来,该厂肝肿大病人有所增多。是否与饮用含丹宁拷胶废水污染的水源有关,值得研究解决。为此,我们于1972年6～9月(丰水期),1973年1～3月(枯水期)进行了调查,以饮用拷胶废水污染水源的两个厂为调查组和以相邻的两个单位(饮用井水的××厂和饮用废水排出口上游的××场)为对照组,分别对职工、家属、儿童进行体检和临床化验;对拷胶生产的原料及排出的废水进行了毒物分析和毒性试验。现将调查结果初步报告如下:
× × plant to more than fruiting bark as raw material containing tannin 60 to 70% of the plastic, since 1968, expanding production, the plant hepatomegaly patients have increased. Whether it is related to drinking water contaminated with tannin copy glue wastewater, it is worth to study and solve. To this end, we conducted a survey in June-September 1972 (Fengshui period) and January-March 1973 (dry season), using two plants that pollute the water source using plastic waste water as the investigation team and two adjacent plants A unit (×× plant drinking well water and drinking wastewater discharge port upstream of the × × field) as the control group, respectively, workers, families, children for physical examination and clinical laboratory tests; copy of plastic raw materials and waste water were Poison analysis and toxicity testing. The preliminary findings of the survey are as follows: