Main Page
Faculty
About the Faculty
Dean Message
Administration
Administration Hierarchy
Faculty Associations>
Saudi Society for Environmental Scienes
Saudi Society of Meteorology
Faculty Labs >
Central Lab
Faculty Film
Departments
Meteorology
Environmental Sciences
Arid Land Agriculture
Hydrology and Water Resources Management
Graduate Studies
Regulations and Guidelines
Graduate Programs
Graduate Studies
Graduate Program >
Department of Meteorology >
Master's in Meterology
Master in Meterology
Department of Environment >
Master of Environment
Doctor of Occupational Hygiene
Doctor of Food Safety and Hygiene
Doctor of Water Pollution
Doctor of Air Pollution and Meteorology
Department of Agriculture >
Master of Animal Production
Master groves
Master and crop protection
Master of Field Crops and Soil
Master of Horticulture
Master of Natural Resources
Master of other decisions
Ph.D. Animal Production
Ph.D. orchards
Doctor of natural resources
PhD Field Crops and Soil
Ph.D. and crop protection
Ph.D. other decisions
Department of Hydrology >
Master of Hydrology
PhD
International Cooperation
Units
Unit of Assessment and Academic Accreditation
The Applications of Systems Quality Unit
Students Activities
Students Activities
Researchs
Files
Courses
Employees
Subjects
Awards
Site Contents
Favorite Links
PhotoAlbum
Latest News
Contact With Us
Contact Us
Faculty Map
Our Contacts
عربي
English
About
Admission
Academic
Research and Innovations
University Life
E-Services
Search
Faculty of Environmental Sciences
Document Details
Document Type
:
Article In Journal
Document Title
:
Impact of pesticides on atmospheric formaldehyde concentration and ambient air quality
تأثير المبيدات على تركيز الفورمالدهيد في الهواء الجوي وعلى نوعية الهواء المحيط
Document Language
:
English
Abstract
:
Hourly formaldehyde concentrations along with temperature and relative humidity were monitored before and afier three spraying processes of chemical pesticides performed on sunny days of spring and summer in l999. The results revealed that the pesticide spraying process (PSP) raised the atmospheric level of formaldehyde (HCHO) in the ambient air of the treated fami for five consecutive days reaching its maximum on the 2nd day. The peak (101 ppb) and highest percent enrichment (304%) in HCHO concentrations were found on the 2nd day of the 2nd summer PSP. The HCHO concentrations were higher afler lst and 2nd summer PSPs (about l.3 and 1.6 times, respectively) than those of the spring PSP. The most hazardous levels were found around solar noon and 80% of them were found at 12 o’clock (local time). The formaldehyde concentrations positively (although insignificantly) correlated with the temperature and negatively with the relative humidity in both seasons investigated. In conclusion. chemical pesticides can be considered as a risky source of secondary formaldehyde formation.
ISSN
:
1219-1221
Journal Name
:
Central European Journal of Occupational and Environmental Medicine
Volume
:
12
Issue Number
:
4
Publishing Year
:
1427 AH
2006 AD
Article Type
:
Article
Added Date
:
Monday, August 29, 2011
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
ممدوح ابراهيم خضير
Khoder, Mamdouh Ibraheim
Investigator
Doctorate
Khoder_55@yahoo.com
Files
File Name
Type
Description
31965.pdf
pdf
Back To Researches Page