Basic Research On The Formation Characteristics
Of Nitrated Polycyclic Aromatic Hydrocarbons In
The Combustion Process
Author(s)
K. Yasuda, N. Ishikawa, M. Watanabe, Y. Noma & K. Kawamoto
Abstract
Nitrated polycyclic aromatic hydrocarbons (nitro-PAHs) are widespread
environmental pollutants that are generated by incomplete combustion. Many
nitro-PAHs compounds are potential genotoxins and some are direct acting
mutagens. Laboratory experiments using PAHs(pyrene, antracene and
napthalene) in gas with coexisting nitrogen oxide and oxygen were conducted to
elucidate the formation and decomposition behaviors of nitro-PAHs in the
heating-reaction tube. It was found that the nitro-PAHs formed in a wide range
of temperature from around 200–1000°C, and that the concentrations of most the
nitro-PAHs decreased with increasing heating temperature (700–1000 °C).
Keywords: heating-reaction tube, polycyclic aromatic hydrocarbon, nitration,
formation characteristic, temperature dependence.
1 Introduction
Nitrated polycyclic aromatic hydrocarbons (nitro-PAHs) have been a focus of
considerable concerns as potential mutagens and carcinogens [1]. Once released
into the atmosphere, nitro-PAHs are highly persistent in the environment and can
be transported long distances from their original sources [2,3]. Nitro-PAHs in
the environment originate mainly from direct emissions from combustion
sources, especially from diesel exhaust1. Nitro-PAHs emissions from municipal
solid waste (MSW) incinerators have been studied using bioassays [4–7]. The
results of quantitative analysis of nitro-PAHs in emissions of MSW incinerators
have also been reported [8,9]. In these studies, however, a limited number of
Keywords
heating-reaction tube, polycyclic aromatic hydrocarbon, nitration,
formation characteristic, temperature dependence.
Related Book
Other papers in this volume
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