Heavy metal distribution between fractions of humic substances in heavily polluted soils

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F04%3A6038" target="_blank" >RIV/60460709:41210/04:6038 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Heavy metal distribution between fractions of humic substances in heavily polluted soils

Original language description

Soil organic matter is important in controlling heavy metal behaviour in soils. This study aims to determine the distribution of organically bound Cd, Pb, and Zn between humic and fulvic acids in 20 samples of heavily polluted Fluvisols. Traditional procedure of alkaline sodium hydroxide/pyrophosphate extraction ofhumic substances with consequent humic acids precipitation by acidification was used. All of the three metals were bound predominantly of fulvic acids (mean share was 98.4,82.0,and 95.7 % oftotal organically bound Cd, Pb, and Zn content, respectively). Mainly the level of pollution controlled the amount of metals bound on fulvic acids. On humic acids, a limited amount of specific sorption sites for the metals is expected. Lead content bound on humic acids was negatively correlated with soil pH. The results suggest relatively high potential mobility of organic fractions of heavy metals in sols under this study. The selectivity of alkaline extracting agent is briefly discussed.

Czech name

Rozložení těžkých kovů mezi frakcemi huminových látek v kontaminované půdě

Czech description

Soil organic matter is important in controlling heavy metal behaviour in soils. This study aims to determine the distribution of organically bound Cd, Pb, and Zn between humic and fulvic acids in 20 samples of heavily polluted Fluvisols. Traditional procedure of alkaline sodium hydroxide/pyrophosphate extraction ofhumic substances with consequent humic acids precipitation by acidification was used. All of the three metals were bound predominantly of fulvic acids (mean share was 98.4,82.0,and 95.7 % oftotal organically bound Cd, Pb, and Zn content, respectively). Mainly the level of pollution controlled the amount of metals bound on fulvic acids. On humic acids, a limited amount of specific sorption sites for the metals is expected. Lead content bound on humic acids was negatively correlated with soil pH. The results suggest relatively high potential mobility of organic fractions of heavy metals in sols under this study. The selectivity of alkaline extracting agent is briefly discussed.

Type

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

CEP classification

DF - Pedology

OECD FORD branch

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Project

<a href="/en/project/GA526%2F02%2F1516" target="_blank" >GA526/02/1516: Application of different pedometric methods on results of soil survey and their comparison</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2004

Confidentiality

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

Name of the periodical

Plant, Soil and Environment

ISSN

1214-1178

e-ISSN

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Volume of the periodical

50

Issue of the periodical within the volume

8

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

7

Pages from-to

339-345

UT code for WoS article

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EID of the result in the Scopus database

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