Publication Date:
2019-08-13
Description:
Dimethylamine and nitrite, which are non-combustion reaction products of unsymmetrical dimethylhydrazine (UDMH) and nitrogen tetroxide (NTO) propellants, can contaminate spacesuits during extra-vehicular activity (EVA) operations. They can react with water in the International Space Station (ISS) airlock to form N-nitrosodimethylamine (NDMA), a carcinogen. Detection methods for assessing nitrite and dimethylamine contamination were investigated. The methods are based on color-forming reactions in which intensity of color is proportional to concentration. A concept color detection kit using a commercially available presumptive field test for methamphetamine coupled with nitrite test strips was developed and used to detect dimethylamine and nitrite. Contamination mitigation strategies were also developed.
Keywords:
Inorganic, Organic and Physical Chemistry
Type:
22nd S and EPS; Mar 06, 2006 - Mar 10, 2006; Sandestin, FL; United States|JANNAF 33rd PEDCS; Mar 06, 2006 - Mar 10, 2006; Sandestin, FL; United States
Format:
application/pdf
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