A Review of Flood-Related Storage and Remobilization of Heavy Metal Pollutants in River Systems

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F16%3A00461494" target="_blank" >RIV/61388980:_____/16:00461494 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s11270-016-2934-8" target="_blank" >http://dx.doi.org/10.1007/s11270-016-2934-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11270-016-2934-8" target="_blank" >10.1007/s11270-016-2934-8</a>

Result language

angličtina

Original language name

A Review of Flood-Related Storage and Remobilization of Heavy Metal Pollutants in River Systems

Original language description

Recently observed rapid climate changes have focused the attention of researchers and river managers on the possible effects of increased flooding frequency on the mobilization and redistribution of historical pollutants within some river systems. This text summarizes regularities in the flood-related transport, channel-to-floodplain transfer, and storage and remobilization of heavy metals, which are the most persistent environmental pollutants in river systems. Metal-dispersal processes are essentially much more variable in alluvia than in soils of non-inundated areas due to the effects of flood-sediment sorting and the mixing of pollutants with grains of different origins in a catchment, resulting in changes of one to two orders of magnitude in metal content over distances of centimetres. Furthermore, metal remobilization can be more intensive in alluvia than in soils as a result of bank erosion, prolonged floodplain inundation associated with reducing conditions alternating with oxygen-driven processes of dry periods and frequent water-table fluctuations, which affect the distribution of metals at low-lying strata. Moreover, metal storage and remobilization are controlled by river channelization, but their influence depends on the period and extent of the engineering works. Generally, artificial structures such as groynes, dams or cut-off channels performed before pollution periods favour the entrapment of polluted sediments, whereas the floodplains of lined river channels that adjust to new, post-channelization hydraulic conditions become a permanent sink for fine polluted sediments, which accumulate solely during overbank flows. Metal mobilization in such floodplains takes place only by slow leaching, and their sediments, which accrete at a moderate rate, are the best archives of the catchment pollution with heavy metals.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DD - Geochemistry

OECD FORD branch

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Project

<a href="/en/project/GA15-00340S" target="_blank" >GA15-00340S: Anthropogenic Pollution and Fluvial Architecture: Two Phenomena and a Single Story</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Water, Air and Soil Pollution

ISSN

0049-6979

e-ISSN

—

Volume of the periodical

227

Issue of the periodical within the volume

7

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

13

Pages from-to

227-239

UT code for WoS article

000379240400021

EID of the result in the Scopus database

2-s2.0-84976287157