光波导高灵敏度硫酸亚铁剂量计的研究  

Study cn Enhancing the Measuring Sensitivity of Ferrous Sulfate Dosimeter by OWG Technique

作　　者：刘占军[1] 吴欣[1] 

机构地区：[1]中国科学技术大学应用化学系

出　　处：《中国科学技术大学学报》1990年第1期83-88,共6页JUSTC

摘　　要：利用光导吸收池来提高Fe^(3+)离子浓度的检测灵敏度,从而降低硫酸亚铁剂量计的量程下限,扩大其应用范围.实验结果:标准工作曲线的线性相关系数为0.99945,平行样品测试数据的相对标准偏差为0.6%,所测吸收剂量的下限降至约10mGy,是迄今为止文献中报道的硫酸亚铁剂量计测量下限的最低值.This study aimed at enhancing the measuring sensitivity of ferrous sulfatedosimeter by optical waveguide absorption cell in order to reduce the dosime-ter's lower limit of the measured dose range and to make its usage widened.The optical waveguide absorption cell and its holder were self-designed and made.The cell consists of two Teflon adapters and flourinated plastic tubing with alow refractive index of 1.34.The absorbance was measured by single beamspectrophotometer.The linear correlation coefficient of standard curve is0.99945.The relative standard deviation of measured dada is 0.6%.The lowerlimit of measured dose is about 10mGy,the best reported in literature forferrous sulfate dosimeter.

关 键 词：硫酸亚铁 剂量计 吸收剂量 光波导 

分 类 号：R144.1[医药卫生—公共卫生与预防医学]