| 紫外线强度与消毒剂量指示卡的研制 |
| |
| 引用本文： | 丁兰英,蒋莉,李素卿,杜金环,刘育京. 紫外线强度与消毒剂量指示卡的研制[J]. 中国消毒学杂志, 1985, 0(2) |
| |
| 作者姓名： | 丁兰英 蒋莉 李素卿 杜金环 刘育京 |
| |
| 作者单位： | 军事医学科学院微生物流行病研究所(丁兰英，蒋莉，李素卿)，中国科学院化学研究所(杜金环)，军事医学科学院微生物流行病研究所(刘育京) |
| |
| 摘 要： | <正> 紫外线照射是目前常用的物理消毒方法之一,广泛应用于水、物体表面和空气的处理。紫外线灯能否有消毒作用,取决于波长为253.7nm的紫外线照射强度。国外一般多以消毒用紫外线照度计测定其强度。该类仪器价格昂贵,国内尚无生产。根据某
|
DEVELOPMENT OF CHEMICAL INDICATOR FOR DISINFECTION WITH ULTRAVIOLET RADIATION |
| |
| Abstract: | A chemical indicator for monitoring disinfection process of ultraviolet radiation was developed. The functional part of the indicator is made of polyethylene strip coated with a layer of photosensitive substance. When it was exposed to UV, its color changed from white to light pink. The larger the irradiation dose was, the deeper the color turned (the higher the photo-densitometric value). The irradiation dose (dose rate×time)showed positive correlation with the photodensitometric value Y=0.001-0.00002X, r=0.99, The photosensitive substance used is onlt sensitive to 253.7 nm UV and has no reaction to fluorescent light and incandesceny lamp. The sunlight can cause only a slight color change.The chemical indicator can be used for measuring the radiation intensity of UV lamp and for determining whether the required dose is achieved during disinfection of air, water and surface. It is proved in experiment that the function of the indicator is stable under different temperature and humidity.The required dosages for different kinds of disinfection showed on the chemical indicator are as follows:Irradiation dose Photodensitometric value after (μw·sec/cm~2) color change of the indicatorStaphylococcus albus in air 199,800 0.96Spore of Bacillus subtilis var. niger in air 266,400 1.11Escherichia coil in water ... 1.44Staphylococcus albus on surface 4,200 0.06E. coli on Surface 4,200 0.06Spore of B. subtilis var. niger on surface 25,200 0.75 |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
|
