The variability of standard artificial soils: cadmium and phenanthrene sorption measured by a batch equilibrium method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F17%3A00096240" target="_blank" >RIV/00216224:14310/17:00096240 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S014765131630361X" target="_blank" >http://www.sciencedirect.com/science/article/pii/S014765131630361X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ecoenv.2016.09.015" target="_blank" >10.1016/j.ecoenv.2016.09.015</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The variability of standard artificial soils: cadmium and phenanthrene sorption measured by a batch equilibrium method

Popis výsledku v původním jazyce

Artificial soil (AS) is used in soil ecotoxicology as a test medium or reference matrix. AS is prepared according to standard OECD/ISO protocols and components of local sources are usually used by laboratories. This may result in significant inter-laboratory variations in AS properties and, consequently, in the fate and bioavailability of tested chemicals. In order to reveal the extent and sources of variations, the batch equilibrium method was applied to measure the sorption of 2 model compounds (phenanthrene and cadmium) to 21 artificial soils from different laboratories. The distribution coefficients (K-d) of phenanthrene and cadmium varied over one order of magnitude: from 5.3 to 61.5 L/kg for phenanthrene and from 17.9 to 190 L/kg for cadmium. Variations in phenanthrene sorption could not be reliably explained by measured soil properties; not even by the total organic carbon (TOC) content which was expected. Cadmium logK(d) values significantly correlated with cation exchange capacity (CEC), pH(H2O) and pH(KCl), with Pearson correlation coefficients of 0.62, 0.80, and 0.79, respectively. CEC and pH(H2O) together were able to explain 72% of cadmium logKd variability in the following model: logK(d) =0.29 pH(H2O)+0.0032 CEC -0.53. Similarly, 66% of cadmium logKd variability could be explained by CEC and pH(KCl) in the model: logKd =0.27 pH(KCl) + 0.0028 CEC -0.23. Variable cadmium sorption in differing ASs could be partially treated with these models. However, considering the unpredictable variability of phenanthrene sorption, a more reliable solution for reducing the variability of ASs from different laboratories would be better harmonization of AS preparation and composition.

Název v anglickém jazyce

The variability of standard artificial soils: cadmium and phenanthrene sorption measured by a batch equilibrium method

Popis výsledku anglicky

Artificial soil (AS) is used in soil ecotoxicology as a test medium or reference matrix. AS is prepared according to standard OECD/ISO protocols and components of local sources are usually used by laboratories. This may result in significant inter-laboratory variations in AS properties and, consequently, in the fate and bioavailability of tested chemicals. In order to reveal the extent and sources of variations, the batch equilibrium method was applied to measure the sorption of 2 model compounds (phenanthrene and cadmium) to 21 artificial soils from different laboratories. The distribution coefficients (K-d) of phenanthrene and cadmium varied over one order of magnitude: from 5.3 to 61.5 L/kg for phenanthrene and from 17.9 to 190 L/kg for cadmium. Variations in phenanthrene sorption could not be reliably explained by measured soil properties; not even by the total organic carbon (TOC) content which was expected. Cadmium logK(d) values significantly correlated with cation exchange capacity (CEC), pH(H2O) and pH(KCl), with Pearson correlation coefficients of 0.62, 0.80, and 0.79, respectively. CEC and pH(H2O) together were able to explain 72% of cadmium logKd variability in the following model: logK(d) =0.29 pH(H2O)+0.0032 CEC -0.53. Similarly, 66% of cadmium logKd variability could be explained by CEC and pH(KCl) in the model: logKd =0.27 pH(KCl) + 0.0028 CEC -0.23. Variable cadmium sorption in differing ASs could be partially treated with these models. However, considering the unpredictable variability of phenanthrene sorption, a more reliable solution for reducing the variability of ASs from different laboratories would be better harmonization of AS preparation and composition.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

30304 - Public and environmental health

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Ecotoxicology and Environmental Safety

ISSN

0147-6513

e-ISSN

—

Svazek periodika

135

Číslo periodika v rámci svazku

January

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

17-23

Kód UT WoS článku

000389555000003

EID výsledku v databázi Scopus

2-s2.0-84988584680