Key Factors for Rapid Detecting 1,1-dimethylhydrazine in Air by Solution Absorption/Spectrophotometry Method

4th International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Yao, Xu^1 ; Zhang, Guangyou^2 ; Liu, Bo^1 ; Xie, Shanshan^2 ; Wang, Xuanjun^1

High-Tech Institute of xi'An, Xi'An, Shanxi, 710025, China^1

Center for Propellants Determination and Protection, Space Systems Division, Beijing

100101, China^2

关键词: Bubble absorbers;    Chinese national standard;    Collection efficiency;    Detection efficiency;    High reliability;    National standard;    Simple operation;    Standard deviation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/237/2/022046/pdf
DOI  :  10.1088/1755-1315/237/2/022046

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to improve the detection efficiency of 1,1-dimethylhydrazine in air by solution absorption/spectrophotometry method, some key factors were analysed, such as the absorption velocity and the number of large bubble absorber tubes. The results of this method were compared with that of Chinese national standard method under different concentration of UDMH. The results showed that two bubble tubes in series could meet the collection efficiency and the best absorption velocity was 0.2 L min-1. The standard deviation of the method was less than 5%, and the error of the method and the national standard method was less than 2%. The proposed method has the characteristics of simple operation, high precision and high reliability.