免疫学反应状态是低强度环境因素对机体产生有害作用的早期灵敏指标之一。作者研究大气及水体中化学污染物的一般毒作用及变态反应作用阈时,发现产生变态反应效应的浓度绝大多数比出现毒作用的浓度低若干数量级;并证明甲醛、氯丁烷、氯联苯酰、对苯二甲酸二甲酯在低于一般毒作用阈浓度或剂量下即发生变态反应。因此,环境化学因素作用下的免 Immunological reaction status is one of the early and sensitive indicators of the deleterious effects of low-intensity environmental factors on the body. When the author studied the general toxic effects of atmospheric and water chemical pollutants and the threshold of allergic reaction, it was found that most of the concentrations that produce allergic effects were several orders of magnitude lower than the toxic concentrations. It was also demonstrated that formaldehyde, chlorobutane, Benzoyl, dimethyl terephthalate below the general toxic effect threshold concentration or dose that is the occurrence of allergic reactions. Therefore, the role of environmental chemistry under the exemption