نتایج جستجو برای: Mineral Dust fallout

تعداد نتایج: 108824  

Balakrishna Gurugubelli, Shamsh Pervez

Different approaches of source apportionment of dust fractions have been reported world-over. Predicting source categories within receptor chemical profiles using regression and factor analysis using PCA has been reported to evaluate possible source/routes of air pollution mass. The present study is focused on the application of all three approaches to investigate higher degrees of significance...

Journal: :iranian journal of earth science 0
balakrishna gurugubelli school of studies in chemistry, pt. ravishankar shukla university, raipur. india 492010. shamsh pervez school of studies in chemistry, pt. ravishankar shukla university, raipur. india 492010.

different approaches of source apportionment of dust fractions have been reported world-over. predicting source categories within receptor chemical profiles using regression and factor analysis using pca has been reported to evaluate possible source/routes of air pollution mass. the present study is focused on the application of all three approaches to investigate higher degrees of significance...

Gurugubelli Balakrishna Shamsh Pervez

The components and quantities of atmospheric dusts fallout has been reported to be the pollution indicator of large urban areas. The multiplicity and complexity of sources of atmospheric dusts in urban regions (e.g. industrial complexes composed of a variety of industrial processes, automobiles, construction activities etc.) has put forward the need of source apportionment of these sources indi...

2012
L. Lanci B. Delmonte D. V. Kent V. Maggi P. E. Biscaye J.-R. Petit

Laboratory-induced remanent magnetization of polar ice constitutes a measurement of the magnetization carried by the ferromagnetic dust particles in the ice. This non-destructive technique provides a novel kind of information on the dust deposited on the surface of polar ice sheets. Measurements made on ice samples from Greenland (North GRIP ice core) and Antarctica (Vostok and EPICA-Dome C ice...

Background: A field study on the transfer of primordial radionuclides 238U, 232Th, 40K and fallout radionuclides 210Po in different plant species in tropical forest of western Ghats environment is presented. Material and Methods: The Top storey, Second storey, Shrubs and epiphytic plant species were chosen and concentration of these radionuclides in plant and soil were measured by employing gam...

2010
Esther Coz Gary Casuccio Traci L. Lersch Teresa Moreno

Mineral dust is a contributor of the global aerosol budget, with arid regions as principal sources. IPCC (2007) gives a best estimate of the direct mineral dust radiative forcing (RF), with the highest uncertainty in the radiative balance estimations being associated to mineral dust for both its direct and indirect effects. In addition, differentiating the anthropogenic influenced dust has impo...

2010
Paolo Gabrielli Anna Wegner Jean Robert Petit Barbara Delmonte Patrick De Deckker Vania Gaspari Hubertus Fischer Urs Ruth Michael Kriews Claude Boutron Paolo Cescon Carlo Barbante

We present the first Rare Earth Elements (REE) concentration record determined in 294 sections of an Antarctic ice core (EPICA Dome C), covering a period from 2.9 to 33.7 kyr BP. REE allow a detailed quantitative evaluation of aeolian dust composition because of the large number of variables (i.e. 14 elements). REE concentrations match the particulate dust concentration profile over this period...

Journal: :iranian journal of radiation research 0
p.k. manigandan dhafir institute, abu dhabi, uae

background: a field study on the transfer of primordial radionuclides 238u, 232th, 40k and fallout radionuclides 210po in different plant species in tropical forest of western ghats environment is presented. material and methods: the top storey, second storey, shrubs and epiphytic plant species were chosen and concentration of these radionuclides in plant and soil were measured by employing gam...

زراسوندی, علیرضا, مر, فرید, نظرپور, احد ,

Study of physical and chemical characteristics of dust storms in Iran is necessary. In this regard, 10 samples from Khozestan dust storms in 1387 and 1388 were collected for XRD and SEM studies. XRD result show that mineralogical composition of these dust particles can be divided into three groups: (1) Carbonate group (calcite mineral), (2) Silicate group (quartz mineral) and (3) Clay group (Ka...

2009
S. Pervez G. Balakrishna S. Tiwari

Source apportionment of mercury in dust fallout at urban residential area of Central India S. Pervez, G. Balakrishna, and S. Tiwari School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur-492010, India Indian Institute of Tropical Meteorology Pune Zonal Laboratory, New Delhi, India Received: 30 September 2009 – Accepted: 1 October 2009 – Published: 19 October 2009 Corresponden...

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