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结合现场个人接触浓度监测结果 (日时间加权平均浓度CTWA) ,采用SPSS 8 0统计软件对 77名接触DNT和NT的硝化作业工人和 40名非硝化作业工人的有关心血管系统指标进行了统计分析。结果表明 ,接触组与对照组相比 ,血压和心率的差异均无显著性 (P >0 0 5 )。接触组心脏检查异常者为11 7% ,比对照组高 ,经χ2 检验 ,差异具有显著性 (P <0 0 5 ) ,且接触组心脏检查异常者工龄均在 5年以上 ,说明长期接触DNT和NT对作业工人心脏有明显的影响。
Combined with the monitoring results of personal contact concentration (time weighted average concentration of time), SPSS 80 statistical software was used to analyze the cardiovascular system indexes of 77 nitration workers and 40 non-nitration workers exposed to DNT and NT . The results showed that there was no significant difference in blood pressure and heart rate between the exposure group and the control group (P> 0.05). In the contact group, the abnormal cardiac examination was 11.7%, higher than the control group, the difference was significant (χ2 test, P <0 05), and the working age of abnormal cardiac examination in the contact group were more than 5 years, indicating that long-term exposure to DNT And NT have a significant impact on workers’ hearts.