随着超高压输电技术的发展,输电线路电压水平上升。因此,传输线附近的电场强度增加,因此,电场可能对健康的影响引起了许多公众的关注。在这项研究中,为了比较静电场(SEF)和工频电场(PFEF)对免疫功能的影响,癌症研究所(ICR)小鼠暴露于35kV/mSEF(0Hz)和PFEF(50Hz),分别。白细胞的几个指标,暴露7、14和21天后检测外周血中的红细胞和血红蛋白,分别。在SEF暴露35kV/m下7d的任何指标均无显著差异,14d和21d分别为实验组和对照组。在35kV/m的PFEF暴露下,暴露7d后白细胞计数显著降低,14d和21d。同时,暴露7d后红细胞计数显著降低,并通过14d和21d暴露后机体的代偿反应恢复到正常水平。接触21d后血红蛋白浓度才显著下降。根据血液学指标的检测结果,35kV/m的SEF暴露不会影响小鼠的免疫功能,而35kV/m的PFEF暴露会导致免疫功能下降。SEF和PFEF对免疫功能的影响差异可能是由于两种电场暴露下生物体内分子极化和离子迁移程度的差异所致。
With the development of the ultra high voltage transmission technology, the voltage level of transmission line rised. Accordingly, the strength of electric field in the vicinity of transmission line increased, thus possible health effects from electric field have caused many public attentions. In this study, in order to compare effects induced by static electric field (SEF) and power frequency electric field (PFEF) on immune function, Institute of Cancer Research (ICR) mice were exposed to 35 kV/m SEF (0 Hz) and PFEF (50 Hz),respectively. Several indicators of white blood cell, red blood cell as well as hemoglobin in peripheral blood were tested after exposure of 7, 14 and 21 days, respectively. There was no significant difference in any indicators under SEF exposure of 35 kV/m for 7d, 14d and 21d between experimental group and control group. Under the PFEF exposure of 35 kV/m, white blood cell count significantly reduced after exposure of 7d, 14d and 21d. Meanwhile, red blood cell count significantly reduced after exposure of 7d, and returned to normal level through the compensatory response of organism after exposure of 14d and 21d. Hemoglobin concentration significantly decreased only after exposure of 21d. Based on tested results of hematological indicators, SEF exposure of 35 kV/m did not affect immune functions in mice but PFEF exposure of 35 kV/m could cause a decline of immune function. This difference of effects from SEF and PFEF on immune function was possibly caused by the difference of the degree of molecular polarization and ion migration in organism under exposure of two kinds of electric fields.