keyword
MENU ▼
Read by QxMD icon Read
search

heavy metal guidelines

keyword
https://www.readbyqxmd.com/read/28107716/occurrence-speciation-and-transportation-of-heavy-metals-in-9-coastal-rivers-from-watershed-of-laizhou-bay-china
#1
Li Xu, Tieyu Wang, Jihua Wang, Anxiang Lu
The occurrence, speciation and transport of heavy metals in 9 coastal rivers from watershed of Laizhou Bay were investigated. The largest dissolved concentrations of Cd, Cu and Zn in water were 6.26, 2755.00, 2076.00 μg/L, respectively, much higher than several drinking water guidelines. The greatest concentrations of Cu, Zn, Cr, Ni, Pb and Cd in sediments were 1462, 1602, 196, 67.2, 63.5 and 1.41 mg/kg, dw, respectively. Correlation and principal component analysis was also conducted to determine the extent between the concentrations of metals in water and sediment, as well as relevant parameters...
January 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/28105597/environmental-and-ecological-risk-of-heavy-metals-in-the-marine-sediment-from-dakhla-bay-morocco
#2
Zidane Hakima, Maanan Mohamed, Mouradi Aziza, Maanan Mehdi, El Barjy Meryem, Zourarah Bendahhou, Blais Jean-Francois
Heavy metal assessment in Dakhla Bay (Atlantic coast) was carried out using different environmental and ecological indices. Heavy metal concentrations were measured using ICP-AES and were compared with consensus-based sediment quality guidelines. The distribution of heavy metal concentrations varies for the three groups: (i) lead distribution is dominated by its associations with copper and chromium. These elements have the same source, most probably related to anthropogenic activities. (ii) Nickel, zinc and cobalt are associated with aluminium and iron indicating their terrigenous origin (natural content), and (iii) cadmium concentration is related to upwelling currents...
January 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28105592/investigation-of-heavy-metal-pollution-in-eastern-aegean-sea-coastal-waters-by-using-cystoseira-barbata-patella-caerulea-and-liza-aurata-as-biological-indicators
#3
S Aydın-Önen, M Öztürk
In order to have an extensive contamination profile of heavy metal levels (Cd, Cu, Fe, Mn, Ni, Pb, and Zn), seawater, sediment, Patella caerulea, Cystoseira barbata, and Liza aurata were investigated by using inductively coupled plasma-atomic emission spectrometry (ICP-AES). Samples were collected from five coastal stations along the eastern Aegean Sea coast (Turkey) on a monthly basis from July 2002 through May 2003. According to the results of this study, heavy metal levels were arranged in the following sequence: Fe > Pb > Zn > Mn > Ni > Cu > Cd for water, Fe > Cu > Mn > Ni > Zn > Pb > Cd for sediment, Fe > Zn > Mn > Pb > Ni > Cd > Cu for C...
January 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28029481/industrial-metal-pollution-in-water-and-probabilistic-assessment-of-human-health-risk
#4
Narottam Saha, M Safiur Rahman, Mohammad Boshir Ahmed, John L Zhou, Huu Hao Ngo, Wenshan Guo
Concentration of eight heavy metals in surface and groundwater around Dhaka Export Processing Zone (DEPZ) industrial area were investigated, and the health risk posed to local children and adult residents via ingestion and dermal contact was evaluated using deterministic and probabilistic approaches. Metal concentrations (except Cu, Mn, Ni, and Zn) in Bangshi River water were above the drinking water quality guidelines, while in groundwater were less than the recommended limits. Concentration of metals in surface water decreased as a function of distance...
October 28, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/28007388/geochemical-distribution-fractionation-and-contamination-assessment-of-heavy-metals-in-marine-sediments-of-the-asaluyeh-port-persian-gulf
#5
Hossein Delshab, Parvin Farshchi, Behnam Keshavarzi
In this study, total concentration and speciation of heavy metals in sediments of the Asaluyeh, one of the Iran's largest commercial ports, are investigated. 48 sediment samples were collected and analyzed for trace and major elements. Sediment quality guidelines along with calculated enrichment factors and trace metal profiles indicate that Asaluyeh port is threated by contamination, especially with respect to Hg and Cu. Normalization to Sc indicated high enrichment factors in the sediments following the decreasing order of: Hg>Cu>As>Ni>Zn>Pb≈Cr≈Mn>Co≈V≈Fe≈Al...
December 19, 2016: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/27984849/composition-of-unrecorded-distilled-alcohol-bai-jiu-produced-in-small-rural-factories-in-central-china
#6
Ian Newman, Ling Qian, Niran Tamrakar, Yonghua Feng, Ganrong Xu
BACKGROUND: Unrecorded traditional distilled spirits (bai jiu, ) are made and used throughout rural China for everyday use and special occasions. Nearly every town or village has a distiller to supply the demand. In rural China, distilling bai jiu is legal and regulated lightly or not at all. The World Health Organization estimates that as much as 25% of all alcohol consumed in China is unrecorded alcohol, of which an unknown portion is unrecorded bai jiu. Little is known about the composition of unrecorded Chinese spirits from rural parts of the country...
January 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/27942760/multivariate-analyses-of-heavy-metals-in-surface-soil-around-an-organized-industrial-area-in-eskisehir-turkey
#7
S Malkoc, B Yazici
A total of 50 surface industrial area soil in Eskisehir, Turkey were collected and the concentrations of As, Cr, Cd, Co, Cu, Ni, Pb, Zn, Fe and Mg, at 11.34, 95.8, 1.37, 15.28, 33.06, 143.65, 14.34, 78.79 mg/kg, 188.80% and 78.70%, respectively. The EF values for As, Cu, Pb and Zn at a number of sampling sites were found to be the highest among metals. Igeo-index results show that the study area is moderately polluted with respect to As, Cd, Ni. According to guideline values of Turkey Environmental Quality Standard for Soils, there is no problem for Pb, but the Cd values are fairly high...
December 10, 2016: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/27939687/spatial-distribution-risk-assessment-and-source-identification-of-heavy-metals-in-sediments-of-the-yangtze-river-estuary-china
#8
Deming Han, Jinping Cheng, Xianfeng Hu, Zhenyi Jiang, Lei Mo, Hao Xu, Yuning Ma, Xiaojia Chen, Heling Wang
The aim of this study was to determine the spatial distribution, potential risks and sources of seven heavy metals in sediments of the Yangtze River Estuary. Analyses of 55 sediment samples revealed that the distributions of metals within the YRE were determined by the combined effects of their sources, hydrodynamic conditions, pH and Eh. According to the geoaccumulation index (Igeo) and sediment quality guidelines, Pb, Cd and Cr were present at low levels of pollution, with Cd posing the largest ecological risk...
December 7, 2016: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/27934187/3d-printed-microfluidic-device-with-microporous-mn2o3-modified-screen-printed-electrode-for-real-time-determination-of-heavy-metal-ions
#9
Ying Hong, Meiyan Wu, Guangwei Chen, Ziyang Dai, Yizhou Zhang, Guosong Chen, Xiaochen Dong
Fabricating portable devices for the determination of heavy metal ions is an ongoing challenge. Here, a 3D printing approach was adopted to fabricate a microfluidic electrochemical sensor with the desired shape in which the model for velocity profiles in microfluidic cells was built and optimized by the finite element method (FEM). The electrode in the microfluidic cell was a flexible screen-printed electrode (SPE) modified with porous Mn2O3 derived from manganese containing metal-organic framework (Mn-MOF)...
December 7, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27887731/assessment-of-heavy-metal-pollution-in-surface-sediments-of-the-bayan-lepas-area-penang-malaysia
#10
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...
January 15, 2017: 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
#11
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
#12
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...
February 2017: 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
#13
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
#14
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
#15
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...
January 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27757369/human-health-risks-from-heavy-metals-in-fish-of-buriganga-river-bangladesh
#16
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
#17
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
#18
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
#19
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...
October 2016: 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
#20
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
keyword
keyword
85024
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"