| Title |
Chemical Constituents of Carbonaceous and Nitrogen Aerosols over Thumba Region, Trivandrum, India
|
|---|---|
| Published in |
Archives of Environmental Contamination and Toxicology, July 2017
|
| DOI | 10.1007/s00244-017-0426-5 |
| Pubmed ID | |
| Authors |
Prashant Hegde, Kimitaka Kawamura |
| Abstract |
Aerosol filter samples collected at a tropical coastal site Thumba over Indian region were analysed for water-soluble ions, total carbon and nitrogen, organic carbon (OC), elemental carbon (EC), and water-soluble organic carbon/nitrogen and their sources for different seasons of the year. For the entire study period, the order of abundance of ions showed the dominance of secondary ions, such as SO4(2-), NO3(-), and NH4(+). On average, Mg(2+) (56%), K(+) (11%), SO4(2-) (8.8%), and Ca(2+) (8.1%) contributions were from maritime influence. There was significant chloride depletion due to enhanced levels of inorganic acids, such as SO4(2-) and NO3(-). Total carbon contributed 21% of the aerosol total suspended particulate matter in which 85% is organic carbon. Primary combustion-generated carbonaceous aerosols contributed 41% of aerosol mass for the entire study period. High average ratios of OC/EC (5.5 ± 1.8) and WSOC/OC (0.38 ± 0.11) suggest that organic aerosols are predominantly comprised of secondary species. In our samples, major fraction (89 ± 9%) was found to be inorganic nitrate in total nitrogen (TN). Good correlations (R (2) ≥ 0.82) were observed between TN with NO3(-) plus NH4(+), indicating that nitrate and ammonium ions account for a significant portion of TN. The temporal variations in the specific carbonaceous aerosols and air mass trajectories demonstrated that several pollutants and/or their precursor compounds are likely transported from north western India and the oceanic regions. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 21 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 21 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 4 | 19% |
| Student > Master | 3 | 14% |
| Student > Doctoral Student | 2 | 10% |
| Unspecified | 1 | 5% |
| Researcher | 1 | 5% |
| Other | 0 | 0% |
| Unknown | 10 | 48% |
| Readers by discipline | Count | As % |
|---|---|---|
| Environmental Science | 6 | 29% |
| Chemical Engineering | 1 | 5% |
| Unspecified | 1 | 5% |
| Earth and Planetary Sciences | 1 | 5% |
| Chemistry | 1 | 5% |
| Other | 1 | 5% |
| Unknown | 10 | 48% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 01 July 2017.
All research outputs
#21,153,429
of 23,806,312 outputs
Outputs from Archives of Environmental Contamination and Toxicology
#1,720
of 2,093 outputs
Outputs of similar age
#275,691
of 315,361 outputs
Outputs of similar age from Archives of Environmental Contamination and Toxicology
#32
of 53 outputs
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