Small-scale spatial and temporal variance in the concentration of heavy metals in aquatic sediments: a review and some new concepts

Birch, G.F.; Taylor, S. E.; Matthai, C.

doi:10.1016/s0269-7491(00)00182-2

Cited by 121 publications

(39 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The repeated sampling at the same station in the Arno catchment allowed the recognition of systematic variations of the chemical composition for only six stations (A17, A15 and A11, Arno; IX, Sieve; V, Pesa; II, Usciana). The differences were ascribed to marked textural difference, as indicated by the large relative standard deviations of SiO 2 (up to 12%), Al 2 O 3 (up to 16.5%) and Zr/ Rb (up to 56%), despite the fact that the sediments had been sieved to reduce the uncertainty related to grain size (see Birch et al, 2001b, for a discussion of the problem). Textural differences are related to different hydrological conditions during the sampling periods, namely the reduction of flow discharge particularly evident in the summer 1997 survey, which produced a relative enrichment in the fine-grained fraction of the sediments in some stations.…”

Section: Resultsmentioning

confidence: 99%

Sources of major and trace elements in the stream sediments of the Arno river catchment (northern Tuscany, Italy)

et al. 2005

View full text Add to dashboard Cite

The source of major and trace elements has been studied in the Arno river catchments, with repeated sampling of stream sediments in 73 stations within the basin. The study was performed for the inventory, survey, assessment and monitoring of metal pollution, and for geochemical mapping of the most representative elements. Chemical data displayed a wide dispersion, greater in the tributaries than in the Arno river, but in general, there was a good overlap between the stream sediments and the major geological units. SiO 2 (32-75 wt%) was high in the main portion of the Arno river and in the northern tributaries, whereas CaO (1.5-27 wt%) was enriched in the southern ones. High MgO values (up to 5.7 wt%) were related to the presence of ophiolitic masses and/or to the ultramafic fraction of Macigno and Cervarola geological formations, which affected the distribution of Ni and Cr. However, in the highly industrialized areas northwest of Florence, high Cr values were associated to Cu, Zn and Pb anomalies. Copper (and sulphur) anomalies also occurred where agricultural practices were widespread. Organic matter content was variable wt%) with an average C/N ratio of 8.7 (range 3.2-12.4), which is consistent with other C/N ratios of river sediments in the world. The relationships between Corg and N, S, P 2 O 5 and heavy metals indicated that the organic matter had a mixed origin (industrial, agricultural, urban) and that both natural and anthropogenic metals entered the Arno river catchment.

show abstract

Section: Resultsmentioning

confidence: 99%

Sources of major and trace elements in the stream sediments of the Arno river catchment (northern Tuscany, Italy)

et al. 2005

View full text Add to dashboard Cite

show abstract

“…Sampling was undertaken during dry weather conditions, with at least five dry days prior to sampling. Two 500 mL aliquots were taken 15 min apart and composited to provide an average concentration over the given time interval to reduce temporal field variance (US EPA 1995;Birch et al 2001). Field and laboratory blanks (deionised water) were taken on the first and last days, and duplicates samples were taken each fourth sample.…”

Section: Base Flow Water Quality Assessment Of Iron Cove Creekmentioning

confidence: 99%

Modelling nutrient loads to Sydney estuary (Australia)

Birch

Cruickshank

Davis

2009

Environ Monit Assess

View full text Add to dashboard Cite

Sydney estuary (Australia) catchment is substantially urbanised (80%) and small (480 km2) with a large population (2.5 million) and is therefore highly sensitive to anthropogenic influence. The Model for Urban Stormwater Improvement Conceptualisation used to model nutrient export to the estuary determined an average annual load of 475 t total nitrogen, 63.5 t total phosphorus and 343,000 t total suspended solids. Model verification included intense, short-term water sampling and analysis undertaken in the current project and use of published data spanning 10 years. Under high-rainfall conditions (>50 mm day(-1)), the estuary becomes stratified and nutrients are either removed from the estuary directly in a plume or indirectly by advective/dispersive remobilisation. The majority of the nutrient load is delivered during moderate rainfall (5-50 mm day(-1)) conditions and accumulates close to discharge points and remains in the estuary. To significantly reduce nutrient load, management strategies should aim to minimise low and moderate rainfall pollutant loads.

show abstract

“…Usually, sediments are significantly more enriched with lithogenic elements compared to the fluvisol. [2,6,35,36] The geochemistry of large rivers will provide insights to the erosional processes of the study region on a global scale due to the differential mobility taking place between the metals by denudation. [37,38] Water-rock interaction, especially at low temperature is unlikely to cause substantial change in REE distribution in all sediments.…”

Section: Areal Distribution Of the Geochemical Dominant Associationsmentioning

confidence: 99%

“…[1][2][3][4] Sediments act as a sink of inorganic pollutants (potentially toxic elements/metals) and provide a history of anthropogenic pollutant input. [5] Toxic metals pollution in sediments has been proved to be an increasingly global problem, which is considered to pose a serious threat to the aquatic environment resulting from their toxicity, non-biodegradable and persistent nature, and the bio-enrichment ability in food chain.…”

Section: Introductionmentioning

confidence: 99%

Geochemical hunting of lithogenic and anthropogenic impacts on polymetallic distribution (Bregalnica river basin, Republic of Macedonia)

Balabanova

Stafilov

Šajn

et al. 2016

Journal of Environmental Science and Health, Part A

View full text Add to dashboard Cite

The main subject of this investigation was the assessment of the lithogenic and anthropogenic distribution of 69 elements in the sediments and fluvisol in the Bregalnica river basin. Alluvial soil and fluvisol samples were collected from the total of eighteen locations along the course of the Bregalnica river and additional thirteen samples were collected from its tributaries. The matrix elements accumulation patterns followed the order: Fe > Na > Al > Ca > Mg > K > Ti > P. The potentially toxic elements, such as As, Cd, Pb, and Zn, have enriched content in the sediments in the medium course of the river, where the main anthropogenic introduction activities occurred. By multivariate analysis the dominant geochemical associations were extracted, as follows: F1: Y-Eu-Lu-Cr-V-La-Gd-Nb-Co-Hf-Zr-Ga-Mg-Fe-Sr-Ta-Sn-Li-Na-RbNi-Ge-Be-Cs; F2: As-W-Ba-Ag-Cu-Tl-Zn-Sb-Mo-In-Cd-Te-Bi-Pb and F3: I-Sc-Br-K. Lead and zinc contents were strongly correlated with the hydrothermal exploitations, especially in the area of Neogene clastite and vulcanite. These elements occur as dominant geochemical markers of the anthropogenic impacts of polymetallic enrichments due to the hydrothermal ore exploitation (Factor 2). The impact of Oligocene volcanism (Kratovo-Zletovo region) was observed in the lithological enrichments of Pb, Zn, Cu, As, Sb, Mo and Bi. Despite the natural distribution along the course of the Bregalnica river, an exceptional anomaly in the iron distribution of the old polymetallic unused mineralization was detected in Zone 1 (Berovo region).

show abstract

Small-scale spatial and temporal variance in the concentration of heavy metals in aquatic sediments: a review and some new concepts

Cited by 121 publications

References 51 publications

Sources of major and trace elements in the stream sediments of the Arno river catchment (northern Tuscany, Italy)

Sources of major and trace elements in the stream sediments of the Arno river catchment (northern Tuscany, Italy)

Modelling nutrient loads to Sydney estuary (Australia)

Geochemical hunting of lithogenic and anthropogenic impacts on polymetallic distribution (Bregalnica river basin, Republic of Macedonia)

Contact Info

Product

Resources

About