Earticle

초록

영어

In flight particulate matter particularly emissions generated by incomplete combustion processes has become a subject of global concern due to the health problems and environmental impacts associated with them. This has compelled most countries to set standards for coarse and fine particles due to their conspicuous impacts on environment and public health. This contribution therefore explores forest fire emissions and how its particulates affects air quality, damage to vegetation, water bodies and biological functions as architects for lung diseases and other degenerative illnesses such as oxidative stress and aging. Soot was collected from simulated forest fire using a clean glass surface and carefully transferred into amber vials for analysis. Volatile components of soot were collected over 10 mL dichloromethane and analyzed using a QTOF Premier-Water Corp Liquid Chromatography hyphenated to a mass selective detector (MSD), and Gas Chromatograph coupled to a mass spectrometer (GC-MS). To characterize the size and surface morphology of soot, a scanning electron microscope (SEM) was used. The characterization of molecular volatiles from simulated forest fire emissions revealed long chain compounds including octadec-9-enoic acid, octadec-6-enoic acid, cyclotetracosane, cyclotetradecane, and a few aromatic hydrocarbons (benzene and naphthalene). Special classes of organics (dibenzo-p-dioxin and 2H-benzopyran) were also detected as minor products. Dibenzo-p-dioxin for instance in chlorinated form is one of the deadliest environmental organic toxins. The average particulate size of emissions using SEM was found to be 11.51±4.91 m. This study has shown that most of the emissions from simulated forest fire fall within PM10 particulate size. The molecular by-products of forest fire and particulate emissions may be toxic to both human and natural ecosystems, and are possible precursors for various respiratory ailments and cancers. The burning of a forest by natural disasters or man-made fires results in the destruction of natural habitats and serious air pollution.

목차

Abstract
 Introduction
 Experimental Protocol
  Materials and sample preparation
  LC-MS and GC-MS characterization of organic volatiles
  SEM characterization of soot
 Results and Discussion
  Scanning Electron Microscopy (SEM) results
  Environmental and biological health effects of molecularvolatiles
  Toxicological impacts of soot particles
 Acknowledgements
 References

키워드

저자

• Joshua Kibet [ Department of Chemistry, Egerton University, Egerton 536-20115, Kenya ] Corresponding author
• Josephate Bosire [ Department of Chemistry, Egerton University, Egerton 536-20115, Kenya ]
• Thomas Kinyanjui [ Department of Chemistry, Egerton University, Egerton 536-20115, Kenya ]
• Moses Lang’at [ Department of Chemistry, University of Surrey, Guildford, GU2 7XH, United Kingdom ]
• Nicholas Rono [ Department of Chemistry, Egerton University, Egerton 536-20115, Kenya ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  Journal of Forest and Environmental Science [산림과학연구]

• 간기

  계간

• pISSN

  2288-9744

• eISSN

  2288-9752

• 수록기간

  1981~2025

• 등재여부

  KCI 등재

• 십진분류

  KDC 526 DDC 634