Rozložení těžkých kovů mezi frakcemi huminových látek v kontaminované půdě

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DF - Pedologie

OECD FORD obor

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Projekt

<a href="/cs/project/GA526%2F02%2F1516" target="_blank" >GA526/02/1516: Aplikace různých pedometrických metod na výsledky pedologického průzkumu a jejich srovnání</a><br>

Návaznosti

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

Rok uplatnění

2004

Kód důvěrnosti údajů

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

Název periodika

Plant, Soil and Environment

ISSN

1214-1178

e-ISSN

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Svazek periodika

50

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

7

Strana od-do

339-345

Kód UT WoS článku

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EID výsledku v databázi Scopus

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