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经监测，牡丹江市某化工厂草酸生产车间空气中草酸平均浓度为０．６６～１．７８ｍｇ／ｍ~３，分别有２／５５个样品超过２ｍｇ／ｍ~３与相当于２ｍｇ／ｍ~３水平，体检结果该作业工人除咽痛症状与对照组比较有显著差异（Ｐ＜０．０５）外，其它体征两组间均无明显差异。当车间空气中草酸浓度波动于１ｍｇ／ｍ~３左右，不超过２ｍｇ／ｍ~３时，可以认为是比较安全的，建议我国车间空气中草酸卫生标准以不超过２ｍｇ／ｍ~３为宜。
After monitoring, the average concentration of oxalic acid in the air of oxalic acid production workshop of a chemical plant in Mudanjiang City was 0.66 ~ 1.78mg / m ~ 3, with 2/55 samples exceeding 2mg / m ~ 3 and the equivalent of 2mg / m3 Level, physical examination results The workers in addition to the symptoms of sore throat and the control group were significantly different (P <0.05), the other signs were no significant differences between the two groups. When the concentration of oxalic acid in the air of the workshop fluctuates around 1mg / m ~ 3 and does not exceed 2mg / m ~ 3, it can be considered as safer to suggest that the standard of oxalic acid in the air of workshop should not exceed 2mg / m ~ 3.