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Characterization and determination of formaldehyde oligomers by capillary column gas chromatography

Journal Article · · Anal. Chem.; (United States)
DOI:https://doi.org/10.1021/ac00267a040· OSTI ID:5895972
A method has been developed for characterization of formaldehyde oligomers in methanol-water solutions as their trimethylsilyl derivatives, utilizing capillary gas chromatography with ammonia chemical ionization mass spectroscopy. The Me/sub 3/Si oligomers form stable adducts with the ammonium ion, (M + NH/sub 4/)/sup +/, permitting assignment of their molecular weights and structures. Quantitative analysis of formalin was accomplished by calibrating the flame ionization detector for molar response to the oligomers by use of closely related compounds. By this method, the total formaldehyde content of formalin solutions was accounted for and the distribution of formaldehyde in the individual oligomers accurately determined. 10 references, 5 figures, 2 tables.
Research Organization:
Univ. of North Carolina, Chapel Hill
OSTI ID:
5895972
Journal Information:
Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 56:3; ISSN ANCHA
Country of Publication:
United States
Language:
English