Atmospheric formaldehyde and acetaldehyde at the campus University of Hiroshima, Japan.

Atmospheric formaldehyde and acetaldehyde at the campus University of Hiroshima, Japan.

Authors

  • Sonia Naomi Nomi Universidade Estadual de Londrina
  • Hiroshi Sakugawa Universidade de Hiroshima
  • Kazuhiko Takeda Universidade de Hiroshima
  • Maria Cristina Solci Universidade Estadual de Londrina

DOI:

https://doi.org/10.5433/1679-0375.2010v31n1p23

Keywords:

Aldehyde, FA/AA ratios, Biogenic emissions

Abstract

Ambient levels of formaldehyde (HCHO) and acetaldehyde (CH3CHO) were measured at Hiroshima (Japan) during spring and summer of 2005. Measurements of O3, NOx, and SO2 were simultaneously conducted, in an attempt to identify temporal profiles and sources for these aldehydes. Atmospheric aldehydes were collected using C18 silica gel cartridges coated with an acidic solution of 2, 4-dinitrophenylhydrazine (2,4-DNPH) and analyzed by high performance liquid chromatography with UV/VIS detection adjusted to 360 nm. Summer concentrations were higher than spring levels. FA concentrations during spring period ranged from 0.50 to 1.05 ppb and AA concentrations ranged from 0.17 to 1.31 ppb; during summer their concentrations ranged from 1.55 to 4.12 ppb and 0. 34 to 2.03 ppb. Average FA/AA in spring and summer were 3.09 and 3.72 suggesting biogenic emissions of aldehydes. The levels of FA and AA, their temporal variations, and their concentration ratio (FA/AA) indicated that photochemical reactions contributed significantly to the formation of atmospheric aldehydes at the study site.

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Author Biographies

Sonia Naomi Nomi, Universidade Estadual de Londrina

Departamento de Química - CCE

Hiroshi Sakugawa, Universidade de Hiroshima

Docente da Escola de Graduação em Ciências da Biosfera

Kazuhiko Takeda, Universidade de Hiroshima

Docente da Escola de Graduação em Ciências da Biosfera

Maria Cristina Solci, Universidade Estadual de Londrina

Departamento de Química - CCE

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Published

2010-07-15

How to Cite

Nomi, S. N., Sakugawa, H., Takeda, K., & Solci, M. C. (2010). Atmospheric formaldehyde and acetaldehyde at the campus University of Hiroshima, Japan. Semina: Ciências Exatas E Tecnológicas, 31(1), 23–29. https://doi.org/10.5433/1679-0375.2010v31n1p23

Issue

Vol. 31 No. 1 (2010)

Section

Original Article

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