AN INVESTIGATION OF OXIDES OF NITROGEN IN METROPOLITAN TEHRAN
Planning of air pollution control programs need knowledge of pollutants emitting sources; the Department of Environmental Health, School of Public Health, Tehran University, performed an air monitoring program for a period of six months in 1976-77. A daily sampling was done from 8 a.m. to 8 p.m., at...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Tehran University of Medical Sciences
1978-06-01
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| Series: | Iranian Journal of Public Health |
| Online Access: | https://ijph.tums.ac.ir/index.php/ijph/article/view/2690 |
| _version_ | 1818880470977347584 |
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| author | M.Ghiassedin K.Imandel A.Vakhideh |
| author_facet | M.Ghiassedin K.Imandel A.Vakhideh |
| author_sort | M.Ghiassedin |
| collection | DOAJ |
| description | Planning of air pollution control programs need knowledge of pollutants emitting sources; the Department of Environmental Health, School of Public Health, Tehran University, performed an air monitoring program for a period of six months in 1976-77. A daily sampling was done from 8 a.m. to 8 p.m., at ten different stations in metropolitan Tehran. Saltzman's sampling and analysis procedures were employed in this investigation. Here are the main results drawn from this conduction. Monthly trend of Nox concentration shows a decrease from September through February. The highest concentration of Nitrogen Oxides was observed at Railway Station Square that was about 2.2 times more than the University. The Nox concentration ranged between 0.17 to 0.62 ppm at Rail-Station Square (maximum) and 0.04 to 0.21 ppm at University (minimum). The hourly fluctuation shows two peaks of maximum concentration. |
| first_indexed | 2024-12-19T14:46:29Z |
| format | Article |
| id | doaj.art-9d71b274e6a845d68762b8252d262d3e |
| institution | Directory Open Access Journal |
| issn | 2251-6085 2251-6093 |
| language | English |
| last_indexed | 2024-12-19T14:46:29Z |
| publishDate | 1978-06-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | Iranian Journal of Public Health |
| spelling | doaj.art-9d71b274e6a845d68762b8252d262d3e2022-12-21T20:16:56ZengTehran University of Medical SciencesIranian Journal of Public Health2251-60852251-60931978-06-01722679AN INVESTIGATION OF OXIDES OF NITROGEN IN METROPOLITAN TEHRAN M.Ghiassedin0 K.Imandel1 A.Vakhideh2 Planning of air pollution control programs need knowledge of pollutants emitting sources; the Department of Environmental Health, School of Public Health, Tehran University, performed an air monitoring program for a period of six months in 1976-77. A daily sampling was done from 8 a.m. to 8 p.m., at ten different stations in metropolitan Tehran. Saltzman's sampling and analysis procedures were employed in this investigation. Here are the main results drawn from this conduction. Monthly trend of Nox concentration shows a decrease from September through February. The highest concentration of Nitrogen Oxides was observed at Railway Station Square that was about 2.2 times more than the University. The Nox concentration ranged between 0.17 to 0.62 ppm at Rail-Station Square (maximum) and 0.04 to 0.21 ppm at University (minimum). The hourly fluctuation shows two peaks of maximum concentration.https://ijph.tums.ac.ir/index.php/ijph/article/view/2690 |
| spellingShingle | M.Ghiassedin K.Imandel A.Vakhideh AN INVESTIGATION OF OXIDES OF NITROGEN IN METROPOLITAN TEHRAN Iranian Journal of Public Health |
| title | AN INVESTIGATION OF OXIDES OF NITROGEN IN METROPOLITAN TEHRAN |
| title_full | AN INVESTIGATION OF OXIDES OF NITROGEN IN METROPOLITAN TEHRAN |
| title_fullStr | AN INVESTIGATION OF OXIDES OF NITROGEN IN METROPOLITAN TEHRAN |
| title_full_unstemmed | AN INVESTIGATION OF OXIDES OF NITROGEN IN METROPOLITAN TEHRAN |
| title_short | AN INVESTIGATION OF OXIDES OF NITROGEN IN METROPOLITAN TEHRAN |
| title_sort | investigation of oxides of nitrogen in metropolitan tehran |
| url | https://ijph.tums.ac.ir/index.php/ijph/article/view/2690 |
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