Longitudinal comparative analysis of blood routine indicators among workers exposed to low concentration benzene series in a printing banknote enterprise
Objective To understand the effect of low-concentration benzene on the blood routine indexes of workers working in low-concentration benzene series environment by continuous monitoring.Methods Low-concentration benzene series workers in a printing banknote enterprise in Nanchang who passed the pre-job physical examination of occupational health were chosen as the observation object,and the occupational health examination during the on-the-job period was carried out once a year after entering the company,and the continuous monitoring was carried out for 5 years,and then the physical examination data of blood routine indexes for 6 consecutive years were longitudinally compared and analyzed.At the same time,horizontally compared and analyzed the physical examination data of blood routine indexes in the 6th year with the physical examination data of administrative and logistics personnel in non benzene series contact positions in the enterprise in the same year.Results The concentration of benzene series at each monitoring point of workshop air was lower than the national occupational exposure limit.There were no significant differences in longitudinal comparative analysis of blood routine indexes(white blood cell count,red blood cell count,hemoglobin and platelet count)for 6 consecutive years(P＞0.05).There were no statistically significant differences in blood routine indexes among results in the physical examination data of the observation subjects in the 6th year and the physical examination data of the control group in the same year(P＞0.05).Conclusion In the investigated enterprise,there is no sufficient evidence demonstrates that exposure to low concentration benzene series can cause significant changes in blood routine indexes of workers.
万方数据
维普
