Feasibility of Using Magnetic Properties for Assessment of Particle-Associated Contaminated Transport

1996 ◽  
Vol 31 (4) ◽  
pp. 741-752 ◽  
Author(s):  
T. Mayer ◽  
W.A. Morris ◽  
K.J. Versteeg
Keyword(s):  
Heavy Metal ◽  
Bottom Sediments ◽  
Magnetic Measurements ◽  
Analytical Techniques ◽  
Suspended Sediments ◽  
Hamilton Harbour ◽  
Data Comparison ◽  
Depositional Processes ◽  
Magnetic Signature ◽  
Contaminants Transport

Abstract The desire to develop rapid tools for monitoring particle-associated contaminants transport in Hamilton Harbour has led the search for fast and inexpensive tests that could be used as screening procedures prior to labour- and time-intensive conventional analytical techniques. Magnetic property measurements promised to be a viable technique if it can be shown that there is a relation between this property and contaminant concentrations in suspended and bottom sediments. Correlation between magnetic susceptibility and heavy metal concentrations in suspended and bottom sediments from Hamilton Harbour is investigated. Analyses of results from six stations and two core samples indicate that magnetic measurements provide a meaningful proxy for heavy metal analyses, and that post-depositional processes produce only very limited changes in either the magnetic and/or chemical data. Comparison of the magnetic signature and chemistry of the suspended sediments suggests that susceptibility can be used to rapidly map plume patterns in the water column.

HEAVY METAL POLLUTION STUDIES OF SUSPENDED SEDIMENTS IN WAIWHETU STREAM WATER BY PIXE

2002 ◽  
Vol 12 (03n04) ◽  
pp. 189-197 ◽  
Author(s):  
V. J. KENNEDY ◽  
A. MARKWITZ
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Surface Waters ◽  
Water Samples ◽  
Stream Water ◽  
Analytical Techniques ◽  
Suspended Sediments ◽  
Industrial Wastes ◽  
Industrial Sites ◽  
Elemental Concentrations

PIXE measurements on filtered water samples were conducted to investigate the possibility of using nuclear based analytical techniques to measure elemental concentrations of heavy metals in suspended sediments in the Waiwhetu Stream (Lower Hutt, New Zealand). It was found that most of the elements detected have a concentration of around 100 ppm by weight with 10 percent variation. Heavy metals like Cu , Zn , Pb and Cd were also present at higher than normal concentrations in the stream. Previous studies of the sediments collected from the Waiwhetu stream had showed that high levels of heavy metals were present at locations close to industrial sites, Nowadays, industries are no longer permitted to dump their waste into the stream. However, high-levels of heavy metals were found to be still present in the water samples indicating that these elements are slowly washed out of the sediments into the surface waters. The present results of Waiwhetu stream water samples revealed that heavy metals are distributed throughout the stream indicating that industrial wastes from industry discharges still linger after 30-40 years.

HEAVY METAL SPECIATION IN BOTTOM SEDIMENTS OF THE VYSHNEVOLOTSKY RESERVOIR

2018 ◽  
pp. 46-54
Author(s):  
O. A. Lipatnikova
Keyword(s):  
Heavy Metal ◽  
Organic Matter ◽  
Bottom Sediments ◽  
Metal Speciation ◽  
Organic Matter Content ◽  
Water Reservoir ◽  
Matter Content ◽  
Heavy Metal Speciation ◽  
Mobile Forms ◽  
Manganese Hydroxides

The study of heavy metal speciation in bottom sediments of the Vyshnevolotsky water reservoir is presented in this paper. Sequential selective procedure was used to determine the heavy metal speciation in bottom sediments and thermodynamic calculation — to determine ones in interstitial water. It has been shown that Mn are mainly presented in exchangeable and carbonate forms; for Fe, Zn, Pb и Co the forms are related to iron and manganese hydroxides is played an important role; and Cu and Ni are mainly associated with organic matter. In interstitial waters the main forms of heavy metal speciation are free ions for Zn, Ni, Co and Cd, carbonate complexes for Pb, fulvate complexes for Cu. Effects of particle size and organic matter content in sediments on distribution of mobile and potentially mobile forms of toxic elements have been revealed.

INFLUENCE OF THE ECOLOGICAL STATE OF THE SEREPOK RIVER (VIETNAM) ON ACCUMULATION OF HEAVY METALS IN ORGANS OF FISH

2017 ◽  
pp. 98-105
Author(s):  
Ngo The Cuong ◽  
Tran Hoan Quoc ◽  
Svetlana Vasilievna Zolotokopova
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
River Water ◽  
Bottom Sediments ◽  
Heavy Metal Concentration ◽  
Industrial Areas ◽  
Industrial Regions ◽  
Cadmium Lead ◽  
Sarotherodon Galilaeus ◽  
Water Bottom

The article focuses on the study of change of containing heavy metals (zinc, copper, iron, cadmium, lead, arsenic) in the abiotic and biotic components of the Serepok river (Vietman) influenced by wastewater discharge from industrial areas. Heavy metal content was determined in the river water and bottom sediments in the four zones: above and within the boundaries of industrial regions Xoa Phu and Tam Thang and in two water reservoirs situated below the boundaries of those industrial areas. Tilapia Galilean ( Sarotherodon galilaeus ), Hemibagrus ( Hemibagrus ), and sazan ( Cyprinus carpio ) caught in these areas were the hydrobionts under study in which liver, gills, skeleton and muscles accumulation of heavy metals was detected. In the organs of fish caught in the river within industrial region, heavy metals concentration was 3-7 times higher. The greatest concentration of heavy metals was found in the liver and gills of fish caught in the boundaries of industrial regions, the least concentration was in the muscles. In most cases, significant correlation between heavy metal concentration in organs of fishes and in river water, bottom sediments has been revealed.

PROBLEM OF HEAVY METAL SURFACE SEDIMENT CONTAMINATION IN THE EASTERN GULF OF FINLAND

2017 ◽  
Author(s):  
N Derugina ◽  
N Derugina ◽  
А Grigoriev ◽  
A Grigoriev ◽  
Дарья Рябчук ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Bottom Sediments ◽  
Late Holocene ◽  
Sediment Contamination ◽  
Gulf Of Finland ◽  
Slow Decline ◽  
Contamination Levels ◽  
The Gulf Of Finland ◽  
Neva Bay

This project defines the pre-industrial quantities of heavy metals in sediment sequences of the Late Holocene from the Eastern Gulf of Finland. A comparative analysis reveals differences and similarities in the current concentrations of heavy metals in bottom sediments and pre-industrial levels. It is found that the maximum concentrations of heavy metals in the bottom sediments of the Gulf of Finland and Neva Bay occurred in the period of 1950-1990. Since the 1990s, the trend has been a slow decline in the contamination levels; however, the concentrations of some heavy metals in bottom sediments remain high.

scholarly journals Dissimilatory Iron-Reducing Microorganisms Are Present and Active in the Sediments of the Doce River and Tributaries Impacted by Iron Mine Tailings from the Collapsed Fundão Dam (Mariana, MG, Brazil)

Minerals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 244
Author(s):  
Carolina N. Keim ◽  
Jilder D. P. Serna ◽  
Daniel Acosta-Avalos ◽  
Reiner Neumann ◽  
Alex S. Silva ◽  
...  
Keyword(s):  
Bottom Sediments ◽  
Magnetic Measurements ◽  
Culture Media ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ferric Oxyhydroxide ◽  
Transmission Electron ◽  
Iron Mine ◽  
Organic Matter Oxidation ◽  
Doce River

On 5 November 2015, a large tailing deposit failed in Brazil, releasing an estimated 32.6 to 62 million m3 of iron mining tailings into the environment. Tailings from the Fundão Dam flowed down through the Gualaxo do Norte and Carmo riverbeds and floodplains and reached the Doce River. Since then, bottom sediments have become enriched in Fe(III) oxyhydroxides. Dissimilatory iron-reducing microorganisms (DIRMs) are anaerobes able to couple organic matter oxidation to Fe(III) reduction, producing CO2 and Fe(II), which can precipitate as magnetite (FeO·Fe2O3) and other Fe(II) minerals. In this work, we investigated the presence of DIRMs in affected and non-affected bottom sediments of the Gualaxo do Norte and Doce Rivers. The increase in Fe(II) concentrations in culture media over time indicated the presence of Fe(III)-reducing microorganisms in all sediments tested, which could reduce Fe(III) from both tailings and amorphous ferric oxyhydroxide. Half of our enrichment cultures converted amorphous Fe(III) oxyhydroxide into magnetite, which was characterized by X-ray diffraction, transmission electron microscopy, and magnetic measurements. The conversion of solid Fe(III) phases to soluble Fe(II) and/or magnetite is characteristic of DIRM cultures. The presence of DIRMs in the sediments of the Doce River and tributaries points to the possibility of reductive dissolution of goethite (α-FeOOH) and/or hematite (α-Fe2O3) from sediments, along with the consumption of organics, release of trace elements, and impairment of water quality.

scholarly journals Geochemistry and mineralogy of recent sediments of Guanabara Bay (NE sector) and its major rivers - Rio de Janeiro State - Brazil

2001 ◽  
Vol 73 (1) ◽  
pp. 121-133 ◽  
Author(s):  
MARCIA DE MELO FARIA ◽  
BRAZ A. SANCHEZ
Keyword(s):  
Heavy Metal ◽  
Grain Size ◽  
Clay Minerals ◽  
Bottom Sediments ◽  
River Sediments ◽  
Size Fraction ◽  
River Mouth ◽  
Guanabara Bay ◽  
Metal Contents ◽  
Recent Sediments

Geochemical and clay mineralogical studies of bottom sediments collected along the Macacu and Caceribu rivers and Guanabara Bay were carried out in order to investigate the relationship between major source areas and recent sediments of the bay. Clay mineralogy includes different groups with selective distribution conditioned by geomorphic features and depositional settings. Micaceous clay minerals are abundant near parent rock in the upper course, whereas kaolinite derived from varied sources is gradually concentrated towards the estuary. In the Guanabara Bay, kaolinite accumulates near river mouths, while micaceous clay minerals are converted into mixed layers in the estuary. Analyses of heavy metal contents reveal higher levels of Zn and Cu in sediments of the bay than in river sediments. Profiles along rivers indicate a downstream decrease of heavy metals, whereas in the bay geochemical trends display greater variations. In general river mouth sediments present the lowest concentrations. At the north and east of Paquetá Island anomalous areas with the highest heavy metal contents occur. Cu tends to concentrate in < 2mum grain-size fraction and indicates an association with micaceous clay minerals in the upper river course. However, Cu retention seems to be further controlled by other components of bottom sediments due to changes in physical and chemical conditions of the estuarine environment. Zn shows unstable behavior along the rivers and concentrates in the bay. Pb displays small variations from river to bay sediments, and accumulates mainly in the < 63mum grain-size fraction without any association with clay mineral. Geoaccumulation indexes of Cu, Pb and Zn classify the study area as unpolluted in both studied rivers and in the NE sector of the bay, though the enrichment factors are higher in the bay. The study does not indicate those rivers as major sources of heavy metal pollution to the bay.

scholarly journals Spatial distribution of heavy metals in surface sediments of Kalametiya Lagoon in southern Sri Lanka; insight towards pollution status and socio-economic interactions

2021 ◽  
Author(s):  
Sunanda Kodikara ◽  
Hossein Tiemoory ◽  
Mangala Chathura De Silva ◽  
Pathmasiri Ranasinghe ◽  
Sudarshana Somasiri ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Spatial Distribution ◽  
Sri Lanka ◽  
Suspended Sediments ◽  
Potential Effect ◽  
Toxic Heavy Metals ◽  
Threshold Effect Level ◽  
Effect Level ◽  
Economic Interactions

Abstract Heavy metal (HM) pollution has become a serious threat to coastal aquatic ecosystems. This study, therefore, aimed at assessing the spatial distribution of selected heavy metals/metalloids including Arsenic (As), Cadmium (Cd), Chromium (Cr), Lead (Pb), and Mercury (Hg) in surface sediment (0–15 cm) samples collected across Kalametiya Lagoon in southern Sri Lanka. Forty-one (41) grid points of the lagoon were sampled and the sediment samples were analyzed for HM content by using ICP-MS. A questionnaire survey was carried out to investigate the possible sources for HM pollution in Kalametiya Lagoon. Water pH and salinity showed significant variation across the lagoon. Overall mean value of pH and salinity were 6.68 ± 0.17 and 2.9 ± 2.2 PSU respectively. The spatial distribution of the heavy metals was not monotonic and showed a highly spatial variation. The kernel density maps of the measured heavy metals demarcated several different areas of the lagoon. The mean contents of As, Cd, Cr, Hg, and Pb were lower than that of threshold effect level (TEL) however, higher for Hg at the North Inlet. Nevertheless, it was still lower than potential effect level (PEL). Socio-economic interactions have dramatically reduced during the past two decades. Industrial sewage, river suspended sediments and agrochemicals such as fertilizers, pesticides were reportedly identified as the possible sources for heavy metal loads. Accumulation of toxic heavy metals can be minimized by detouring the water inflow to the lagoon.

scholarly journals Relationship Between Heavy Metal Concentrations in Bottom Sediments and the Clam, Galatea Paradoxa (Born 1778) from the Volta Estuary, Ghana

2011 ◽  
Vol 02 (06) ◽  
pp. 720-728 ◽  
Author(s):  
Hashem A Madkour ◽  
Kwasi A Obirikorang ◽  
Steve Amisah ◽  
Fred A Otchere ◽  
Daniel Adjei-Boateng
Keyword(s):  
Heavy Metal ◽  
Bottom Sediments ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations ◽  
Galatea Paradoxa ◽  
Volta Estuary

scholarly journals Bottom Sediments Reveal Inter-Annual Variability of Interaction between the Ob and Yenisei Plumes in the Kara Sea

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
A. A. Osadchiev ◽  
En. E. Asadulin ◽  
A. Yu. Miroshnikov ◽  
I. B. Zavialov ◽  
E. O. Dubinina ◽  
...  
Keyword(s):  
Bottom Sediments ◽  
Vertical Structure ◽  
Suspended Sediments ◽  
Kara Sea ◽  
Local Wind ◽  
River Plumes ◽  
Buoyant Plumes ◽  
Sea Bottom ◽  
Mixing Dynamics ◽  
Good Agreement

AbstractRiver discharge is the main source of terrigenous sediments in many coastal areas adjacent to estuaries and deltas of large rivers. Spreading and mixing dynamics of river plumes governs transport of suspended sediments and their deposition at sea bottom at these areas. Generally river plumes have very large synoptic and seasonal variability, which cannot be reconstructed from structure of bottom sediments due to their small accumulation velocity. However, bottom sediments can be indicative of variability of river plumes on inter-annual and decadal time scales. In this study we focus on the large Ob and Yenisei buoyant plumes formed in the central part of the Kara Sea. These plumes interact and mix in the area adjacent to the closely located Ob and Yenisei gulfs. Suspended sediments carried by these river plumes have significantly different geochemical characteristics that can be used to detect Ob or Yenisei origin of bottom sediments. Using new geochemical methods we revealed dependence between spreading patterns of these plumes and spatial distribution and vertical structure of bottom sediments in the study area. This relation is confirmed by a good agreement between local wind and discharge conditions reconstructed for 1948–2001 and vertical structure of bottom sediments.

scholarly journals Sulphur and Heavy Metal Pollution in Urban Snow: Multi-Elemental Analytical Techniques and Interpretations

1985 ◽  
Vol 7 ◽  
pp. 175-180 ◽  
Author(s):  
S. Landsberger ◽  
R.E. Jervis
Keyword(s):  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Inductively Coupled Plasma ◽  
Analytical Techniques ◽  
Atomic Emission ◽  
Enrichment Factors ◽  
Emission Spectrometry ◽  
Plasma Atomic Emission Spectrometry ◽  
Inductively Coupled

Three multi-elemental techniques (neutron activation analysis, proton-induced X-ray emission and inductively coupled plasma-atomic emission spectrometry) are described in terms of their special advantages in determining sulphur and heavy metal pollution in urban snow. Environmental analytical interpretations, including wash-out factors, enrichment factors, inter-elemental correlations, mobilization factors, and toxicity potential, are also discussed.

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