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Dergiler / Atmospheric Pollution Research / 2020 / Cilt: 11 - Sayı: 1

Investigating the temporal variation of formaldehyde using MAX-DOAS and satellite observations over Islamabad, Pakistan

Asadullah SHOAİB
Muhammad Fahim KHOKHAR
Osama SANDHU
Sayfa
193–204
DOI
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Yapay Zeka Hızlı Bakış & Çıkarımlar

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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

A good correlation with Pearson value of 0.68 is noticed during the whole study period.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:Formaldehyde (HCHO) being an oxygenated Volatile Organic Compound (VOC), essentially contributes to thehazardous tropospheric ozone pollution in urban areas.
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Temel Bulgular & Veri:The current study is designed toexplore the formaldehyde columns at a stationary site, Institute of Environmental Science and Engineering(IESE), National University of Science and Technology (NUST) Islamabad from September 2015 to August 2017using Multi-Axis – Differential Optical Absorption Spectroscopy (MAX-DOAS).
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Sonuç & Katkı:A good correlation with Pearson value of 0.68 is noticed during the whole study period.
🔬Tür:Araştırma Makalesi
📍Kapsam:2015 Verileri
⚙️Değişkenler:Alan Parametreleri

Özet

Formaldehyde (HCHO) being an oxygenated Volatile Organic Compound (VOC), essentially contributes to thehazardous tropospheric ozone pollution in urban areas. Emissions from automobiles are the major contributorstowards elevated formaldehyde concentrations in major urban cities of Pakistan. The current study is designed toexplore the formaldehyde columns at a stationary site, Institute of Environmental Science and Engineering(IESE), National University of Science and Technology (NUST) Islamabad from September 2015 to August 2017using Multi-Axis – Differential Optical Absorption Spectroscopy (MAX-DOAS). Observations from MAX-DOASinstrument were used to measure the diurnal, weekly and annual cycle of formaldehyde (HCHO). The diurnalconcentrations of HCHO were found to be at its maximum during early morning and evening hours. Relativelyinsignificant weekly cycle with higher concentrations on working days and lesser during the weekend was observedat IESE-NUST monitoring site. While annual cycle showed the highest columns in summer followed byspring, autumn and winter. The suspected sources of HCHO at a fixed station were identified as natural gasconsumption, biogenic emissions from vegetation, emissions from industries and vehicular emissions.Furthermore, ground-based measurements were compared with monthly Ozone Monitoring Instrument (OMI)satellite observations. A good correlation with Pearson value of 0.68 is noticed during the whole study period.

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Bu Makaleye Atıf Yap

SHOAİB, A., KHOKHAR, M. F., SANDHU, O. (2020). Investigating the temporal variation of formaldehyde using MAX-DOAS and satellite observations over Islamabad, Pakistan. Atmospheric Pollution Research, Cilt: 11 - Sayı: 1, 193–204. https://ajindex.com/articles/351252

Kaynakça (10)

  1. Anderson, L.G., Lanning, J.A., Barrell, R., Miyagishima, J., Jones, R.H., Wolfe, P., 1996. Sources and sinks of formaldehyde and acetaldehyde: an analysis of Denver's ambient concentration data. Atmos. Environ. 30 (12), 2113–2123.
  2. Baek, K.H., Kim, J.H., Park, R.J., Chance, K., Kurosu, T.P., 2014. Validation of OMI HCHO data and its analysis over Asia. Sci. Total Environ. 490, 93–105.
  3. Bobrowski, N., Hönninger, G., Galle, B., Platt, U., 2003. Detection of bromine monoxide in a volcanic plume. Nature 423 (6937), 273–276.
  4. Colbeck, I., Nasir, Z.A., Ali, Z., 2010. The state of ambient air quality in Pakistan—a review. Environ. Sci. Pollut. Control Ser. 17 (1), 49–63. Corrêa, S.M., Arbilla, G., 2005. Formaldehyde and acetaldehyde associated with the use of natural gas as a fuel for light vehicles. Atmos. Environ. 39 (25), 4513–4518.
  5. Dasgupta, P.K., Li, J., Zhang, G., Luke, W.T., McClenny, W.A., Stutz, J., Fried, A., 2005. Summertime ambient formaldehyde in five US metropolitan areas: Nashville, Atlanta, Houston, Philadelphia, and Tampa. Environ. Sci. Technol. 39 (13), 4767–4783.
  6. De Smedt, I., Müller, J.F., Stavrakou, T., Eskes, H., Roozendael, M.V., 2008. Twelve years of global observations of formaldehyde in the troposphere using GOME and SCIAMACHY sensors. Atmos. Chem. Phys. 8 (16), 4947–4963.
  7. Duong, A., Steinmaus, C., McHale, C.M., Vaughan, C.P., Zhang, L., 2011. Reproductive and developmental toxicity of formaldehyde: a systematic review. Mutat. Res. Rev. Mutat. Res. 728 (3), 118–138.
  8. Finlayson-Pitts, B.J., Pitts, J.N., 1999. Chemistry of the Upper and Lower Atmosphere:Theory, Experiments and Applications. Academic Press,
  9. San Diego, Calif. Fu, T.M., Jacob, D.J., Palmer, P.I., Chance, K., Wang, Y.X., Barletta, B., et al., 2007. Space‐based formaldehyde measurements as constraints on volatile organic compound emissions in east and south Asia and implications for ozone. 1984–2012. J. Geophys. Res.: Atmosphere (D6), 112. Guenther, A.B., Jiang, X., Heald, C.L., Sakulyanontvittaya, T., Duhl, T., Emmons, L.K., Wang, X., 2012. The Model of Emissions of Gases and Aerosols from Nature Version 2.1 (MEGAN2. 1): an Extended and Updated Framework for Modeling Biogenic Emissions. Hak, C., Pundt, I., Trick, S., Kern, C., Platt, U., Dommen, J., et al., 2005. Inter-comparison of four different in-situ techniques for ambient formaldehyde measurements in urban air. Atmos. Chem. Phys. 5 (11), 2881–2900.
  10. Ho, K.F., Lee, S.C., Tsai, W.Y., 2006. Carbonyl compounds in the roadside env