Comparison of BTX Profiles and Their Mutagenicity Assessment at Two Sites of Agra, India
In the present study, the concentrations of three volatile organic compounds (VOCs), namely, acronym for benzene, toluene, and xylenes (BTX) were assessed because of their role in the tropospheric chemistry. Two representative sites, a roadside and a petrol pump, were chosen for sample collection....
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2012-01-01
|
| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1100/2012/272853 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832568285406691328 |
|---|---|
| author | Vyoma Singla Tripti Pachauri Aparna Satsangi K. Maharaj Kumari Anita Lakhani |
| author_facet | Vyoma Singla Tripti Pachauri Aparna Satsangi K. Maharaj Kumari Anita Lakhani |
| author_sort | Vyoma Singla |
| collection | DOAJ |
| description | In the present study, the concentrations of three volatile organic compounds (VOCs), namely, acronym for benzene, toluene, and xylenes (BTX) were assessed because of their role in the tropospheric chemistry. Two representative sites, a roadside and a petrol pump, were chosen for sample collection. VOCs were collected using SKC-activated charcoal tubes and SKC personal sampler and characterized by gas chromatograph using flame ionization detector. Among BTX, benzene had the highest concentration. At the roadside, mean concentration of benzene, toluene, o-,m-xylene, and p-xylene were 14.7 ± 2.4 μgm−3, 8.1 ± 1.2 μgm−3, 2.1 ± 0.8 μgm−3, and 5.1 ± 1.2 μgm−3, respectively. At the petrol pump, the mean concentrations of benzene, toluene, o-,m-xylene and p-xylene were 19.5 ± 3.7 μgm−3, 12.9 ± 1.1 μgm−3, 3.6 ± 0.5 μgm−3 and 11.1 ± 1.5 μgm−3, respectively, and were numerically higher by a fraction of 2. Monthly variation of BTX showed maximum concentration in winter. Inter-species ratios and inter-species correlation indicated traffic as the major source of BTX. Extracts of samples were positive in both Salmonella typhimurium tester strains TA98 and TA100 without metabolic activation suggesting the presence of direct mutagens in ambient air that can cause both frame-shift and base-pair mutation. The mutagenic response was greater for TA100 than TA98 suggesting greater activity for base-pair mutagenicity than frame-shift mutagenicity and was found to be statistically significant. |
| format | Article |
| id | doaj-art-49e178f46fa04bdaa87a0b6045bbd002 |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-49e178f46fa04bdaa87a0b6045bbd0022025-02-03T00:59:19ZengWileyThe Scientific World Journal1537-744X2012-01-01201210.1100/2012/272853272853Comparison of BTX Profiles and Their Mutagenicity Assessment at Two Sites of Agra, IndiaVyoma Singla0Tripti Pachauri1Aparna Satsangi2K. Maharaj Kumari3Anita Lakhani4Department of Chemistry, Faculty of Science, Dayalbagh Educational Institute, Dayalbagh, Agra 282110, IndiaDepartment of Chemistry, Faculty of Science, Dayalbagh Educational Institute, Dayalbagh, Agra 282110, IndiaDepartment of Chemistry, Faculty of Science, Dayalbagh Educational Institute, Dayalbagh, Agra 282110, IndiaDepartment of Chemistry, Faculty of Science, Dayalbagh Educational Institute, Dayalbagh, Agra 282110, IndiaDepartment of Chemistry, Faculty of Science, Dayalbagh Educational Institute, Dayalbagh, Agra 282110, IndiaIn the present study, the concentrations of three volatile organic compounds (VOCs), namely, acronym for benzene, toluene, and xylenes (BTX) were assessed because of their role in the tropospheric chemistry. Two representative sites, a roadside and a petrol pump, were chosen for sample collection. VOCs were collected using SKC-activated charcoal tubes and SKC personal sampler and characterized by gas chromatograph using flame ionization detector. Among BTX, benzene had the highest concentration. At the roadside, mean concentration of benzene, toluene, o-,m-xylene, and p-xylene were 14.7 ± 2.4 μgm−3, 8.1 ± 1.2 μgm−3, 2.1 ± 0.8 μgm−3, and 5.1 ± 1.2 μgm−3, respectively. At the petrol pump, the mean concentrations of benzene, toluene, o-,m-xylene and p-xylene were 19.5 ± 3.7 μgm−3, 12.9 ± 1.1 μgm−3, 3.6 ± 0.5 μgm−3 and 11.1 ± 1.5 μgm−3, respectively, and were numerically higher by a fraction of 2. Monthly variation of BTX showed maximum concentration in winter. Inter-species ratios and inter-species correlation indicated traffic as the major source of BTX. Extracts of samples were positive in both Salmonella typhimurium tester strains TA98 and TA100 without metabolic activation suggesting the presence of direct mutagens in ambient air that can cause both frame-shift and base-pair mutation. The mutagenic response was greater for TA100 than TA98 suggesting greater activity for base-pair mutagenicity than frame-shift mutagenicity and was found to be statistically significant.http://dx.doi.org/10.1100/2012/272853 |
| spellingShingle | Vyoma Singla Tripti Pachauri Aparna Satsangi K. Maharaj Kumari Anita Lakhani Comparison of BTX Profiles and Their Mutagenicity Assessment at Two Sites of Agra, India The Scientific World Journal |
| title | Comparison of BTX Profiles and Their Mutagenicity Assessment at Two Sites of Agra, India |
| title_full | Comparison of BTX Profiles and Their Mutagenicity Assessment at Two Sites of Agra, India |
| title_fullStr | Comparison of BTX Profiles and Their Mutagenicity Assessment at Two Sites of Agra, India |
| title_full_unstemmed | Comparison of BTX Profiles and Their Mutagenicity Assessment at Two Sites of Agra, India |
| title_short | Comparison of BTX Profiles and Their Mutagenicity Assessment at Two Sites of Agra, India |
| title_sort | comparison of btx profiles and their mutagenicity assessment at two sites of agra india |
| url | http://dx.doi.org/10.1100/2012/272853 |
| work_keys_str_mv | AT vyomasingla comparisonofbtxprofilesandtheirmutagenicityassessmentattwositesofagraindia AT triptipachauri comparisonofbtxprofilesandtheirmutagenicityassessmentattwositesofagraindia AT aparnasatsangi comparisonofbtxprofilesandtheirmutagenicityassessmentattwositesofagraindia AT kmaharajkumari comparisonofbtxprofilesandtheirmutagenicityassessmentattwositesofagraindia AT anitalakhani comparisonofbtxprofilesandtheirmutagenicityassessmentattwositesofagraindia |