Kaune W T, Forsythe W C
Biology and Chemistry Department, Pacific Northwest Laboratory, Richland, Washington.
Bioelectromagnetics. 1988;9(1):1-24. doi: 10.1002/bem.2250090102.
Measurements have been made of vector current densities induced by vertical, uniform, 60-Hz electric fields in the torsos of homogeneous models of swine and rats. The observed data were a strong function of the five grounding configurations invested: all four feet grounded, only front feet grounded, only rear feet grounded, left front and right rear feet grounded, and right front and left rear feet grounded. In the first configuration and with an exposure field strength of 10 kV/m, average total current densities induced in the torsos of pigs and rats were 34 nA/cm2 and 20 nA/cm2, respectively. The corresponding value for human exposure is about 250 nA/cm2, 7.3 and 12.5 times larger than for swine and rats, respectively. Current densities measured at 60 Hz can be linearly extrapolated to frequencies in a range extending from at least 1 Hz to 1 MHz. Human and animal current-density data can provide an improved rationale for extrapolating biological data across species. In addition, these data can be used to validate the predictions of numerical models.
已对垂直、均匀的60赫兹电场在猪和大鼠均匀模型躯干中感应出的矢量电流密度进行了测量。观测数据强烈依赖于所研究的五种接地配置：四只脚全部接地、仅前脚接地、仅后脚接地、左前脚和右后脚接地以及右前脚和左后脚接地。在第一种配置下，暴露场强为10 kV/m时，猪和大鼠躯干中感应的平均总电流密度分别为34 nA/cm²和20 nA/cm²。人体暴露的相应值约为250 nA/cm²，分别比猪和大鼠大7.3倍和12.5倍。在60赫兹下测得的电流密度可以线性外推到至少从1赫兹到1兆赫兹的频率范围。人类和动物的电流密度数据可为跨物种推断生物学数据提供更好的理论依据。此外，这些数据可用于验证数值模型的预测。
