Trace metal adsorption potential of phases comprising black coatings on stream pebbles

Robinson, G.D.

doi:10.1016/0375-6742(82)90003-6

Cited by 18 publications

(10 citation statements)

References 7 publications

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“…However, Jenne (1976) indicates that clay-sized particles may be viewed simply as mechanical substrates upon which trace elements can concentrate (without chemical interaction). Bear in mind that trace element concentrations can and do accumulate on coarse material as well, including sand, pebbles, cobbles, and boulders (Filipek, et al, 1981;Robinson, 1982); nevertheless, high concentrations are more commonly associated with finegrained material.…”

Section: Physical and Chemical Factors Affecting Sediment-trace Elemementioning

confidence: 99%

A primer on sediment-trace element chemistry

Horowitz¹

1991

Open-File Report

506

471

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Preface iii Glossary vi Introduction 1 1.0 Importance of sediments to aquatic trace element chemistry 1.1 Monitoring studies 2 1.2 Suspended versus bed sediments-utility for various types of studies 1.3 Partitioning of trace elements between dissolved and solid phases 4 1.4 Fluvial transport of trace elements by suspended sediments 1.5 Comparison of trace element concentrations in suspended and bottom sediments versus dissolved levels 8 1.6 Effect of suspended sediment concentration on fluvial transport of trace elements 1.7 Historical trace element levels 2.0 Physical and chemical factors affecting sediment-trace element chemistry 2.1 Introduction 2.2 Physical factors 2.2.1 Grain-size ranges and the effect of grain size 2.2.2 Chemical analysis of various grain sizes in bottom sediments 18 2.2.3 Chemical analysis of various grain sizes in suspended sediments 18 2.2.4 Effect of grain size on trace element concentrations in samples collected from the same and different basins 2.2.5 Comparison of samples having similar bulk chemistries but differing grain-size distributions 2.2.6 Effect of grain size on sediment-associated chemical transport at differing discharge rates 2.2.7 Measuring grain-size distributions 2.2.7.1 Differences in grain size distributions induced by using different techniques 2.2.7.2 Differences in grain size distributions induced by sample pretreatment 28 2.2.8 Effect of sediment surface area 2.2.9 Importance of surface area to sediment-trace element concentrations 2.2.10 Measuring surface area 2.3 Chemical factors 2.3.1 Cation exchange capacity 38 2.3.2 Composition significant sedimentary trace element collectors 2.3.2.1 Iron and manganese oxides 2.3.2.2 Organic matter 2.3.2.3 Clay minerals 2.3.3 Introduction to and utility of chemical partitioning 48 2.3.4 Chemical partitioning methods 2.3.4.1 Chemical partitioning-instrumental methods 2.3.4.2 Chemical partitioning ~ partial extraction methods 2.3.4.2.1 Chemical partitioning of suspended sediments by partial extraction 2.3.4.2.2 Chemical partitioning of bottom sediments by partial extraction 58 IV 2.3.4.3 Chemical partitioning by density gradient and mineralogy 60 2.3.4.4 Chemical partitioning using statistical manipulation of data 2.3.4.5 Chemical partitioning using mathematical modelling 2.4 The interrelation and relative importance of selected physical and chemical factors affecting sediment-trace element chemistry 2.4.1 Relative importance of physical and chemical factors to sediment-trace element chemistry 2.4.1.1 The interrelation of grain size and surface area to each other and to sediment-trace element chemistry 2.4.1.2 The interrelation of grain size and geochemical substrate to each other and to sediment-trace element chemistry 2.4.1.3 The interrelation of surface area and geochemical substrate to each other and to sediment-trace element chemistry 2.4.2 The interrelation of grain size, surface area, and geochemical substrate to each other 2.4.3 Predicting sediment-trace element concentrations using physical and chemical factors 3.0 Se...

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Section: Physical and Chemical Factors Affecting Sediment-trace Elemementioning

confidence: 99%

A primer on sediment-trace element chemistry

Horowitz¹

1991

Open-File Report

506

471

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“…Of the fraction of heavy metals carried with suspended sediment, particle size is one of the most important physical controls ( Figure 4). In general, there is a good negative correlation between sediment size and metal concentrations, although metals have been shown to accumulate on the surfaces of coarser materials, including sand, pebbles and even boulders (Robinson, 1982;. High metal concentrations are more usually associated with fine sediments, particularly those in the silt and clay fractions, in both freshwater and marine sediments (Dossis and Warren, 1980;Forstner and Patchineelam, 1980;Morrison et al, 1984;Thoms, 1987a;1987b;Burrus et al, 1990;Horowitz, 1991).…”

Section: Sediment-water Partitioningmentioning

confidence: 99%

Heavy metals in the hydrological cycle: Trends and explanation

1996

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This paper reviews the major sources and transport characteristics of heavy metals in the hydrological cycle. It is demonstrated that heavy metal releases to the environment have changed from 19th and early 20th century production-related activities to consumption-oriented factors in more recent times. The relative roles of particle size, sorption and desorption processes, partitioning and the chemical speciation of heavy metals on fine sediments are identified to understand the likely fate of heavy metals released into fluvial systems. It is argued that the spatial and temporal distribution of heavy metals in the river corridor depends not only on an understanding of metal solubility and speciation, but also on an understanding of sediment dynamics which control, for example, floodplain alluviation and the accumulation of metals in the bottom sediments of contaminated rivers, lakes and reservoirs. Existing long-and short-term records are examined to identify the current state of knowledge about the factors which affect heavy metal releases into aquatic environments. With limited exceptions, it is shown that few long-term studies of trends in heavy metal transport are available although, for some major rivers, limited data on trends in metal concentration exists. Palaeolimnological reconstruction techniques, based on an analysis of lake and reservoir sediments, are identified as a possible means of supplementing monitored records of heavy metal transport. Although numerous studies have suggested that trends in atmospheric contamination, mining and urbanization may be identified in the bottom sediment record, other research has shown that the radionuclide-based chronology and the heavy metal distribution within the sediment are more likely to be a function of post-depositional remobilization than the history of metal loading to the basin. Despite these limitations, it is shown that the incorporation of reservoir bottom sediment analysis into a heavy metal research programme, based in river corridors of Midland England, provides an opportunity to identify and quantify the relative contribution of point and non-point contributions to the heavy metal budget and to relate trends in metal contamination to specific periods of catchment disturbance.

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“…Carpenter et al, 1975;Lion et al, 1982;Robinson, 1981Robinson, , 1982Deng et al, 2000). Studies have shown that films, cements and coatings of these oxides contain anomalously high concentrations of metals near oxidizing sulfide deposits (Filipek et al, 1981;Whitney, 1981).…”

Section: Environmental Relevance Of Coatings In Riverine Soils and Tmentioning

confidence: 97%