نتایج جستجو برای: sqgs

تعداد نتایج: 72  

Journal: :Journal of Marine Science and Engineering 2021

The land-sea interface is considered as a threatening environment due to anthropogenic development activities. Unplanned developments can cause effects on important ecosystems, water and human health well. In this study, the influence of rapid regional accumulation trace elements sediments an ecosystem, Batticaloa lagoon, Sri Lanka was examined. Surface sediment pollution status ecological risk...

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: :Journal of environmental sciences 2014
Jing Meng Tieyu Wang Pei Wang John P Giesy Yonglong Lu

Twelve perfluoroalkyl substances (PFASs) and nine organochlorine pesticides (OCPs) were quantified in surface sediments from the Huaihe River, China, along which there are intensive industrial and agricultural activities. Concentrations of PFASs ranged from 0.06 to 0.46ng/g dry weight (dw), and concentrations of OCPs ranged from 1.48 to 32.65ng/gdw. Compared with other areas in China, concentra...

2014

This study aims at determining the elemental concentrations of Cu, Zn, Cr, Pb, Ni, Co and Cd in the sediment samples from Odo-Owa and Yemoji streams in Ijebu-Ode Local Government Area (L.G.A), South Western (SW) Nigeria, using Atomic Absorption Spectrophotometer and comparing the concentration of these metals in the two streams with other studies and with acceptable concentration values for met...

2003
DOMINIC M. DI TORO JOY A. MCGRATH

A method is presented for developing sediment quality guidelines (SQG) for narcotic chemicals in general and polycyclic aromatic hydrocarbons (PAHs) in particular. The guidelines can be applied to any individual or mixture of narcotic chemicals including PAHs using only the chemical’s octanol/water partition coefficient. They are derived using the final chronic values for type I narcotics devel...

Journal: :Journal of physics 2022

Abstract This article discussed on the status of heavy metals (As, Cr, Cu, Mn, Ni, Pb and Zn) pollution in coastal sediment cores assess quality from Usukan Beach, Kota Belud. Several geochemical parameter analyses such as pH, moisture content (MC), organic matter (OM) granulometric size were performed to identify physico-chemical properties sediments that affect assessment metal pollution. Hea...

Journal: :ecopersia 0
samar mortazavi assistant professor, department of environment, faculty of natural resource and environmental sciences, malayer university, malayer, iran behnaz attaeian assistant professor, department of range and watershed management, faculty of natural resource and environmental sciences, malayer university, malayer, iran shoayb abdolkarimi m.sc. graduated, department of environment, faculty of natural resource and environmental sciences, malayer university, malayer, iran

the total concentration and percentage of heavy metals content in the sediment of hashilan wetland, kermanshah province, was assessed in summer 2015. the total concentrations of cu, pb, and fe were around 18.57, 6.95 and 379.24 μg g-1, respectively. successive extractions of the samples showed a decreasing trend as follows: residual>organic matter>iron and manganese oxides>exchangeable parts. t...

Journal: :Ecotoxicology 2011
Blanca Antizar-Ladislao Santosh Kumar Sarkar Peter Anderson Tanya Peshkur Bhaskar Deb Bhattacharya Mousumi Chatterjee Kamala Kanta Satpathy

The study reports the first assessment for the quantification and speciation of butyltins (BTs) in surface marine sediment samples (0-5 cm) from intertidal mudflats of Sundarban mangrove wetland along with the Hugli (Ganges) river basin, eastern coastal part of India. Concentrations of tributyltin (TBT), dibutyltin (DBT) and monobutyltin (MBT) were monitored at 16 stations and present at all st...

2012
Cheng-Di Dong Chih-Feng Chen Chiu-Wen Chen

Analysis of the 16 polycyclic aromatic hydrocarbons (PAHs) of the US Environmental Protection Agency priority pollutant list was carried out in sediment samples of an industrial port in the southern Kaohsiung Harbor of Taiwan which is supposed to be extensively polluted by industrial wastewater discharges. The determination and quantification of PAHs in sediment samples were performed using gas...

2014
Jing Li

The magnitude and ecological relevance of metal pollution from the upstream of water sources after emergency pollution events was investigated by applying a set of complementary sediment quality assessment methods: (1) geochemical assessment based on background value (the geoaccumulation index); (2) comparisons with sediment quality guidelines (SQGs); (3) an evaluation of the combined pollution...

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