交流阻抗法测量正常人血液细胞介电谱  

AC impedance measurement of the dielectric spectra for normal human blood cells

作　　者：丰明俊[1,2] 马青[1] 王力[1] 陈林[1] 陈晓敏[2] 

机构地区：[1]宁波大学医学院,浙江宁波315211 [2]宁波市第一医院,浙江宁波315010

出　　处：《南方医科大学学报》2009年第7期1390-1392,1399,共4页Journal of Southern Medical University

基　　金：浙江省自然科学基金(Y207698);宁波市自然科学基金(2006A610040);宁波市科技项目(2006C100116)

摘　　要：目的研究正常人血液细胞介电性能的数据特征。方法在射频段使用阻抗分析仪测量了30例正常人血液样本的交流阻抗,通过介电谱、复平面图、介电损耗因子、电导率虚部和损耗角正切的频谱分析,明确了正常人血液细胞介电性能的频率特性。结果正常人血液细胞介电常数和电导率具有频率依从性;正常人血液细胞介电性能具有两个特征频率:第一特征频率f1=0.59MHz,第二特征频率f2=2.12MHz。结论通过频域阻抗分析法可以确定血液细胞频率特性。Objective To studythe data characteristics ofdielectric properties ofnormal blood cells.Methods The AC impedances of blood samples from the 30 healthy volunteers were measured with impedance analyzer at the radio frequency range,and its frequency properties were assess in view of the dielectric spectroscopy,complex plots,loss factor,imaginary part of conductivity and loss tangent.Results The permittivity and conductivity of healthy adult whole blood cells had a dependence of frequency.The dielectric propert...

关 键 词：血液细胞 介电常数 电导率 介电谱 

分 类 号：R35[医药卫生—基础医学]