观察了石油化工污水处理工人一些血液指标的变化。结果显示：暴露人群血液中ＷＢＣ，Ｌｙ％，Ｔ细胞百分比明显低于对照组；血清ＡＬＴ，ＬＤＨ，ＢＵＮ则显著升高，说明长期从事石油化工污水处理对作业工人的免疫功能和生化指标有一定的影响。工龄分组后发现：１～５年工龄组各指标均出现显著变化，提示短期接触即可能对工人健康产生影响 Observed changes in some blood indicators of petrochemical wastewater treatment workers. The results showed that the percentages of WBC, Ly% and T cells in the exposed group were significantly lower than those in the control group. The levels of serum ALT, LDH and BUN were significantly increased, indicating that long-term petrochemical wastewater treatment had certain effects on the immune function and biochemical indexes Impact. After grouping, we find that there are significant changes in each index of 1 to 5 years of service, suggesting that short-term exposure may have an impact on the health of workers