نتایج جستجو برای: sediment core

تعداد نتایج: 250295  

Journal: :international journal of environmental research 2015
s. veerasingam p. vethamony p. vethamony r. mani murali m.t. babu

the mandovi estuary is highly influenced by mining and tourism related activities in the centralwest coast of india. vertical fluxes and accumulation of petroleum hydrocarbons (phcs) in three sedimentcores (d1, c1 and og) from the mandovi estuary were assessed using ultra-violet fluorescence (uvf)spectroscopy. the range of phcs values in estuarine sediments varied from 5.4 to 12.34 μg/g enrichm...

Journal: :pollution 2015
akhil p.s. sujatha h

a comprehensive evaluation of the residual levels of organochlorine insecticides (ocis) in the sediment cores of cochin estuarine system (ces) is highlighted in this research article. it assessed the distribution pattern and impact of these xenobiotics in this environmental niche. fifteen persistent organochlorine compounds (ocs) were quantitatively analysed in the six sediment core samples col...

Journal: :international journal of environmental research 2014
p. manju p.s. nair akhil c.h. sujatha

this article present the result from a study of two sediment cores collected from theenvironmentally distinct zones of ces. accumulation status of five toxic metals: cadmium (cd), chromium(cr), cobalt (co), copper (cu) and lead (pb) were analyzed. besides texture and chns were determined tounderstand the composition of the sediment. enrichment factor (ef) and anthropogenic factor (af) wereused ...

Journal: :international journal of environmental research 0
p. manju department of chemical oceanography, school of marine sciences, cochin university of science and technology, kochi-16, kerala, india p.s. nair akhil department of chemical oceanography, school of marine sciences, cochin university of science and technology, kochi-16, kerala, india c.h. sujatha department of chemical oceanography, school of marine sciences, cochin university of science and technology, kochi-16, kerala, india

this article present the result from a study of two sediment cores collected from theenvironmentally distinct zones of ces. accumulation status of five toxic metals: cadmium (cd), chromium(cr), cobalt (co), copper (cu) and lead (pb) were analyzed. besides texture and chns were determined tounderstand the composition of the sediment. enrichment factor (ef) and anthropogenic factor (af) wereused ...

Journal: :Applied and environmental microbiology 2005
Xiang Xiao Xuebin Yin Jian Lin Liguang Sun Ziyong You Peng Wang Fengping Wang

A sediment core spanning approximately 1,600 years was collected from a lake on Ardley Island, Antarctica. The sediment core had been greatly influenced by penguin guano. Using molecular methods, the chitinolytic bacterial community along the sediment core was studied over its entire length. Primers targeting conserved sequences of the catalytic domains of family 18 subgroup A chitinases detect...

2011
Gale A. Bishop David Hurst Thomas Matthew C. Sanger Brian K. Meyer R. Kelly Vance Robert K. Booth Fredrick J. Rich Donald B. Potter Timothy Keith-Lucas

Vibracoring is a subsurface sediment acquisition (sediment coring) technique (Pierce and Howard, 1969; Howard and Frey, 1975; dreher et al., 2008) that returns sediment preserved within its stratigraphic and sedimentologic context. This process (see appendix 1) generates a continuous, contiguous sediment sample at a point by vibrating an aluminum core barrel vertically into the sediment (fig. 1...

Journal: :Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation 2010

A comprehensive evaluation of the residual levels of Organochlorine insecticides (OCIs) in the sediment cores of Cochin Estuarine System (CES) is highlighted in this research article. It assessed the distribution pattern and impact of these xenobiotics in this environmental niche. Fifteen persistent organochlorine compounds (OCs) were quantitatively analysed in the six sediment core samples col...

Journal: Pollution 2015

A comprehensive evaluation of the residual levels of Organochlorine insecticides (OCIs) in the sediment cores of Cochin Estuarine System (CES) is highlighted in this research article. It assessed the distribution pattern and impact of these xenobiotics in this environmental niche. Fifteen persistent organochlorine compounds (OCs) were quantitatively analysed in the six sediment core samples col...

2017
Sonakshi Mishra Peggy Wefers Mark Schmidt Katrin Knittel Martin Krüger Marion H. Stagars Tina Treude

The microbial community response to petroleum seepage was investigated in a whole round sediment core (16 cm length) collected nearby natural hydrocarbon seepage structures in the Caspian Sea, using a newly developed Sediment-Oil-Flow-Through (SOFT) system. Distinct redox zones established and migrated vertically in the core during the 190 days-long simulated petroleum seepage. Methanogenic pet...

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