Enhancement of N-nitrosamine formation on granular-activated carbon from N-methylaniline and nitrite

Journal Article · Wed Oct 01 00:00:00 EDT 1986 · Environ. Sci. Technol.; (United States)

DOI:https://doi.org/10.1021/es00152a016· OSTI ID:6990075

Dietrich, A M; Gallagher, D L; DeRosa, P M; Millington, D S; DiGiano, F A

Sterile aqueous N-methylaniline solutions were allowed to equilibrate at various nitrite, F-400 granular-activated carbon, and pH levels for 1 week. The aqueous and activated carbon phases were extracted and analyzed for nitrosamines relative to an added internal standard. Selected ion monitoring GC/MS, utilizing continuous monitoring of the NO/sup +/ ion (m/z 29.9980) characteristic of nitrosamines, at medium resolution (R = 2500-3000) was applied to quantitatively measure nitrosamines at picograms per microliter concentrations. This method selected for nitrosamine products only and eliminated interferences from non-nitrosamine reaction products. Results indicate that the pressure of granular-activated carbon significantly enhanced the formation of nitrosamine from N-methyl-aniline (F = 145, P< 0.0001). The amount of N-nitrosomethylaniline formed in the presence of activated carbon was 75 times more than that formed in the absence of activated carbon under the same nitrite, pH, and precursor amine conditions. High nitrite concentrations and loss pH values significantly increased the conversion of secondary amine to nitrosamine. 25 references, 4 figures, 4 tables.

• Research Organization: Univ. of North Carolina, Chapel Hill
• OSTI ID: 6990075
• Journal Information: Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 20:10; ISSN ESTHA
• Country of Publication: United States
• Language: English

Related Subjects

520200* -- Environment
Aquatic-- Chemicals Monitoring &amp; Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTIVATED CARBON
ADSORBENTS
AMINES
CARBON
CATALYTIC EFFECTS
DATA
ELEMENTS
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
INFORMATION
NITROSAMINES
NITROSO COMPOUNDS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PH VALUE
PURIFICATION
SYNTHESIS
WATER