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https://www.readbyqxmd.com/read/27887731/assessment-of-heavy-metal-pollution-in-surface-sediments-of-the-bayan-lepas-area-penang-malaysia
#1
Sharareh Khodami, Misni Surif, Wan Maznah W O, Reza Daryanabard
This study aimed to evaluate the spatial and temporal distribution of heavy metals (Cd, Cr, Cu, Co, Fe, Pb, Ni, V, and Zn) in the sediments of Bayan Lepas Free Industrial Zone of Penang, Malaysia. Ten sampling stations were selected and sediment samples were collected during low tide (2012-2013). Metals were analyzed and the spatial distribution of metals were evaluated based on GIS mapping. According to interim sediment quality guidelines (ISQG), metal contents ranged from below low level to above high level at different stations...
November 22, 2016: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/27863880/fractionation-of-heavy-metals-in-sediments-and-assessment-of-their-availability-risk-a-case-study-in-the-northwestern-of-persian-gulf
#2
Amirhossein Pejman, Gholamreza Nabi Bidhendi, Mojtaba Ardestani, Mohsen Saeedi, Akbar Baghvand
Sequential extraction procedure was applied to determine the chemical forms of heavy metals in sediments in order to assess their mobility and availability in the aquatic environment. The mean concentrations of Cr, Ni, Pb, Cd, Cu and Zn in exchangeable and carbonate fractions were 14.9, 30.9, 17, 0.37, 4.4 and 14.4mg/kg, respectively. Based on the sediments quality guidelines (SQGs), the adverse biological effects caused by Ni, can occur frequently across the study area. Risk assessment code (RAC) suggested that the Cd has the highest level of environmental risk compared with other studied metals...
November 15, 2016: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/27855343/removing-heavy-metals-using-permeable-pavement-system-with-a-titanate-nano-fibrous-adsorbent-column-as-a-post-treatment
#3
Danious Pratheep Sounthararajah, Paripurnanda Loganathan, Jayakumar Kandasamy, Saravanamuthu Vigneswaran
Permeable pavement systems (PPS) are a widely-used treatment measure in sustainable stormwater management and groundwater recharge. However, PPS are not very efficient in removing heavy metals from stormwater. A pilot scale study using zeolite or basalt as bed material in PPS removed 41-72%, 67-74%, 38-43%, 61-72%, 63-73% of Cd, Cu, Ni, Pb, and Zn, respectively, from synthetic stormwater (pH 6.5; Cd, Cu, Ni, Pb, and Zn concentrations of 0.04, 0.6, 0.06, 1.0, and 2.0 mg L(-1), respectively) over a period of 80 h...
November 14, 2016: Chemosphere
https://www.readbyqxmd.com/read/27815031/wide-scale-utilization-of-mswi-fly-ashes-in-cement-production-and-its-impact-on-average-heavy-metal-contents-in-cements-the-case-of-austria
#4
Jakob Lederer, Verena Trinkel, Johann Fellner
A number of studies present the utilization of fly ashes from municipal solid waste incineration (MSWI) in cement production as a recycling alternative to landfilling. While there is a lot of research on the impact of MSWI fly ashes utilization in cement production on the quality of concrete or the leaching of heavy metals, only a few studies have determined the resulting heavy metal content in cements caused by this MSWI fly ashes utilization. Making use of the case of Austria, this study (1) determines the total content of selected heavy metals in cements currently produced in the country, (2) designs a scenario and calculates the resulting heavy metal contents in cements assuming that all MSWI fly ashes from Austrian grate incinerators were used as secondary raw materials for Portland cement clinker production and (3) evaluates the legal recyclability of demolished concretes produced from MSWI fly ash amended cements based on their total heavy metal contents...
November 1, 2016: Waste Management
https://www.readbyqxmd.com/read/27771881/the-occurrence-and-potential-ecological-risk-assessment-of-bauxite-mine-impacted-water-and-sediments-in-kuantan-pahang-malaysia
#5
Faradiella Mohd Kusin, Muhammad Syazwan Abd Rahman, Zafira Madzin, Shamshuddin Jusop, Ferdaus Mohamat-Yusuff, Mariani Ariffin, Mohd Syakirin Md Z
Recent bauxite mining activities in the vicinity of Kuantan, Pahang, have been associated with apparent environmental quality degradation and have raised environmental concerns among the public. This study was carried out to evaluate the overall ecological impacts on water and sediment quality from the bauxite mining activities. Water and sediment samples were collected at seven sampling locations within the bauxite mining areas between June and December 2015. The water samples were analyzed for water quality index (WQI) and distribution of major and trace element geochemistry...
October 22, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27757744/a-comparative-study-for-the-stabilisation-of-heavy-metal-contaminated-sediment-by-limestone-mno2-and-natural-zeolite
#6
Yuanjie Yi, Jia Wen, Guangming Zeng, Taotao Zhang, Fenghu Huang, Haiyan Qin, Shiyu Tian
Three amendments including limestone, MnO2 and natural zeolite were assessed for their stabilisation effects on Zn, Cu, Pb and Cd in sediment of east Dongting Lake, mid-south China. The metals were first subject to pollution status and potential ecological risk assessment to identify the current and potential hazards to ecology. Speciation of the metals in the sediment treated with amendments was then carried out by BCR sequential extraction procedure in order to evaluate metal contents and their potential mobility...
October 18, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27757369/human-health-risks-from-heavy-metals-in-fish-of-buriganga-river-bangladesh
#7
Md Kawser Ahmed, Mohammad Abdul Baki, Goutam Kumar Kundu, Md Saiful Islam, Md Monirul Islam, Md Muzammel Hossain
Heavy metals are known to cause deleterious effects on human health through food chain. Human health risks were evaluated from consumption of heavy metal contaminated fish from Buriganga River in Bangladesh. Whole body of five fish species (Puntius ticto, Puntius sophore, Puntius chola, Labeo rohita and Glossogobius giuris) were analyzed which contained various concentrations of Cd, As, Pb, Cr, Ni, Zn, Se, Cu, Mo, Mn, Sb, Ba, V and Ag. Concentrations of Mn, Zn, Se and Pb in all fish species were above the Food Safety Guideline (FSG) by WHO/FAO...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27740544/bioaugmentation-process-of-secondary-effluents-for-reduction-of-pathogens-heavy-metals-and-antibiotics
#8
A A Al-Gheethi, R M S R Mohamed, A N Efaq, I Norli, Abdullah Abd Halid, H K Amir, M O Ab Kadir
The study probed into reducing faecal indicators and pathogenic bacteria, heavy metals and β-lactam antibiotics, from four types of secondary effluents by bioaugmentation process, which was conducted with Bacillus subtilis strain at 45 °C. As a result, faecal indicators and pathogenic bacteria were reduced due to the effect of thermal treatment process (45 °C), while the removal of heavy metals and β-lactam antibiotics was performed through the functions of bioaccumulation and biodegradation processes of B...
October 2016: Journal of Water and Health
https://www.readbyqxmd.com/read/27668715/the-distribution-contamination-and-risk-assessment-of-heavy-metals-in-sediment-and-shellfish-from-the-red-sea-coast-egypt
#9
Ahmed El Nemr, Ghada F El-Said, Safaa Ragab, Azza Khaled, Amany El-Sikaily
Zn, Cu, Ni, V, Al, Pb, Cd, Hg, lipid and water contents were determined in the soft tissues of different shellfish species collected along the Red Sea shoreline. Metal contents showed a descending order of Zn > Cu > Ni > Al > V > Pb > Cd > Hg. The leachable concentrations found in the sediments gathered from the studied locations gave another descending order: Al > Zn > Ni > Pb > V > Cu > Cd. The determined leachable heavy metal contents in the sediment did not exceed the NOAA and CCME (Anonymous 1999) sediment quality guidelines...
December 2016: Chemosphere
https://www.readbyqxmd.com/read/27663878/assessment-of-heavy-metal-pollution-risks-in-yonki-reservoir-environmental-matrices-affected-by-gold-mining-activity
#10
Samuel Kapia, B K Rajashekhar Rao, Harry Sakulas
This study reports the heavy metal (Hg, Cd, Cr, Cu, and Pb) contamination risks to and safety of two species of fresh water fish (tilapia, Oreochromis mossambicus and carp, Cyprinus carpio) that are farmed in the Yonki Reservoir in the Eastern Highlands of Papua New Guinea (PNG). The upper reaches of the reservoir are affected by alluvial and large-scale gold mining activities. We also assessed heavy metal levels in the surface waters and sediments and in selected aquatic plant species from the reservoir and streams that intersect the gold mining areas...
December 0: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27658408/distribution-and-risk-assessment-of-metals-and-arsenic-contamination-in-man-made-ditch-sediments-with-different-land-use-types
#11
Mathieu Nsenga Kumwimba, Bo Zhu, Tao Wang, Diana Kavidia Muyembe
Ditches are subjected to a large input of nutrients, trace metals, and arsenic and the enhancement of sedimentation due to human activities. However, the influence of different types of land uses on the distribution and associated environmental risk of metals and arsenic in the Red purple Sichuan Basin remains largely unclear, which is needed for water management. This study was carried out to characterize metal/metalloid status in ditch sediments from different land uses. A total of 68 surface sediment samples (0-5 cm) were collected from open ditches distributed in different land use types, i...
September 23, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27640167/distribution-enrichment-and-source-identification-of-selected-heavy-metals-in-surface-sediments-of-the-siran-river-mansehra-pakistan
#12
Ahmed Raza, Abida Farooqi, Asif Javed, Waqar Ali
To assess the trace metal pollution in the Siran River, sediments were collected from 12 sites, from the left and right banks of the river in 2013. The concentrations, accumulation, distribution pattern, and pollution status of heavy metals in sediments were investigated using geoaccumulation index (I geo) and enrichment factor (EF). The toxic risk of heavy metals was assessed using interim sediment quality guidelines (ISQGs), portable effect level (PEL), threshold effect level (TEL), and toxic effect threshold (TET)...
December 0: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27629574/reaching-nutritional-adequacy-does-not-necessarily-increase-exposure-to-food-contaminants-evidence-from-a-whole-diet-modeling-approach
#13
Tangui Barré, Florent Vieux, Marlène Perignon, Jean-Pierre Cravedi, Marie-Josèphe Amiot, Valérie Micard, Nicole Darmon
BACKGROUND: Dietary guidelines are designed to help meet nutritional requirements, but they do not explicitly or quantitatively account for food contaminant exposures. OBJECTIVE: In this study, we aimed to test whether dietary changes needed to achieve nutritional adequacy were compatible with acceptable exposure to food contaminants. METHODS: Data from the French national dietary survey were linked with food contaminant data from the French Total Diet Study to estimate the mean intake of 204 representative food items and mean exposure to 27 contaminants, including pesticides, heavy metals, mycotoxins, nondioxin-like polychlorinated biphenyls (NDL-PCBs) and dioxin-like compounds...
October 2016: Journal of Nutrition
https://www.readbyqxmd.com/read/27614908/comparison-of-pollution-indices-for-the-assessment-of-heavy-metal-in-brisbane-river-sediment
#14
Godfred Odame Duodu, Ashantha Goonetilleke, Godwin A Ayoko
Estuarine environment is complex and receives different contaminants from numerous sources that are persistent, bioaccumulative and toxic. The distribution, source, contamination and ecological risk status of heavy metals in sediment of Brisbane River, Australia were investigated. Sediment samples were analysed for major and minor elements using LA-ICP-MS. Principal component analysis and cluster analysis identified three main sources of metals in the samples: marine sand intrusion, mixed lithogenic and sand intrusion as well as transport related...
September 7, 2016: Environmental Pollution
https://www.readbyqxmd.com/read/27600270/assessment-of-heavy-metal-contamination-in-the-surface-sediments-a-reexamination-into-the-offshore-environment-in-china
#15
Hongzhe Chen, Jigang Wang, Jinmin Chen, Hui Lin, Cai Lin
The contents of Cu, Pb, Zn, Cd, Cr, Hg and As in the surface sediments of over 668 sites were monitored in a comprehensive program for assessing the degree of heavy-metal pollution and adverse biological effects of the offshore sediments in China. The contamination factor and geoaccumulation index indicated that As and Pb might be two of the most influential pollution loading in these metals. Cluster analysis separated 19 areas in China's near seas into 7 groups with different pollution characteristic, where the sediments along Zhejiang coast were the most highly-contaminated...
September 3, 2016: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/27552994/accumulation-of-cr-cd-pb-cu-and-zn-by-plants-in-tanning-sludge-storage-sites-opportunities-for-contamination-bioindication-and-phytoremediation
#16
Yongqiang Yuan, Shen Yu, G S Bañuelos, Yunfeng He
Tanning sludge enriched with high concentrations of Cr and other metals has adverse effects on the environment. Plants growing in the metalliferous soils may have the ability to cope with high metal concentrations. This study focuses on potentials of using native plants for bioindication and/or phytoremediation of Cr-contaminated sites. In the study, we characterized plants and soils from six tanning sludge storage sites. Soil in these sites exhibited toxic levels of Cr (averaged 16,492 mg kg(-1)) and other metals (e...
August 23, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27546735/geochemical-partitioning-and-pollution-assessment-of-ni-and-v-as-indicator-of-oil-pollution-in-surface-sediments-from-shadegan-wildlife-refuge-iran
#17
Behnam Heidari Chaharlang, Alireza Riyahi Bakhtiari, Jahangard Mohammadi, Parvin Farshchi
The total concentrations and chemical partitioning of Ni, V and Fe have been assessed in surface sediments from 160 sites along the Shadegan wildlife refuge. The results showed that the average total level of Ni, V and Fe in surface sediments were 45.08±12.09, 25.25±20.8 and 25,979.01±6917.91μg/g dw, respectively. On the average, the chemical speciation of Ni, V and Fe in most stations were in the order of residual>oxidisable-organic>acid-reducible>exchangeable. In all fractions, the residual was accounted the highest proportion for the metals analyzed...
October 15, 2016: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/27491419/potential-ecological-and-human-health-risks-of-heavy-metals-in-surface-soils-associated-with-iron-ore-mining-in-pahang-malaysia
#18
Siti Merryan Diami, Faradiella Mohd Kusin, Zafira Madzin
The composition of heavy metals (and metalloid) in surface soils of iron ore mine-impacted areas has been evaluated of their potential ecological and human health risks. The mining areas included seven selected locations in the vicinity of active and abandoned iron ore-mining sites in Pahang, Malaysia. Heavy metals such as Fe, Mn, Cu, Zn, Co, Pb, Cr, Ni, and Cd and metalloid As were present in the mining soils of the studied area, while Cu was found exceeding the soil guideline value at all sampling locations...
August 4, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27449537/leaching-of-chloride-sulphate-heavy-metals-dissolved-organic-carbon-and-phenolic-organic-pesticides-from-contaminated-concrete
#19
M Van Praagh, H Modin
Concrete samples from demolition waste of a former pesticide plant in Sweden were analysed for total contents and leachate concentrations of potentially hazardous inorganic substances, TOC, phenols, as well as for pesticide compounds such as phenoxy acids, chlorophenols and chlorocresols. Leachates were produced by means of modified standard column leaching tests and pH-stat batch tests. Due to elevated contents of chromium and lead, as well as due to high chloride concentrations in the first leachate from column tests at L/S 0...
October 2016: Waste Management
https://www.readbyqxmd.com/read/27399161/chronic-kidney-disease-of-unknown-etiology-in-sri-lanka
#20
Senaka Rajapakse, Mitrakrishnan Chrishan Shivanthan, Mathu Selvarajah
INTRODUCTION: In the last two decades, chronic kidney disease of unknown etiology (CKDu) has emerged as a significant contributor to the burden of chronic kidney disease (CKD) in rural Sri Lanka. It is characterized by the absence of identified causes for CKD. The prevalence of CKDu is 15.1-22.9% in some Sri Lankan districts, and previous research has found an association with farming occupations. METHODS: A systematic literature review in Pubmed, Embase, Scopus, and Lilacs databases identified 46 eligible peer-reviewed articles and one conference abstract...
July 11, 2016: International Journal of Occupational and Environmental Health
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