AI Article Synopsis

  • The study builds on previous findings linking direct-acting mutagenicity to gases from incomplete incineration, using Salmonella typhimurium strains.
  • It identifies dinitropyrene (DNP) as a mutagen through nitrogen selective gas chromatography and explores its formation conditions.
  • The research reveals that DNP requires specific factors for formation, such as light irradiation, temperature, and the presence of nitric acid, highlighting the role of these factors in combustion sources.

Article Abstract

In a previous paper, direct-acting mutagenicity was reported in emission gas from incomplete municipal incineration using Salmonella typhimurium TA-98 and TA-100. This paper reports the detection of dinitropyrene (DNP) as a direct-acting mutagen using nitrogen selective gas chromatography. The gas-phase photochemical reaction of pyrene with nitrogen dioxide was examined in a quartz vessel with various reaction times and temperatures. 1-Nitropyrene (1-NP) was readily formed from pyrene in the absence of light irradiation and at low temperature, but DNP was not formed under similar conditions. DNP formation was catalyzed by nitric acid. The formation of DNP is dependent on light irradiation, temperature and HNO3 as catalyst. In a combustion source these factors affect the formation of DNP.

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http://dx.doi.org/10.1016/0048-9697(88)90002-2DOI Listing

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