Diffusive gradients in thin films (DGT) as a robust and reliable technique to measure bioavailable metals in digestates

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F24%3A43927605" target="_blank" >RIV/60461373:22320/24:43927605 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2352186424000026" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2352186424000026</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.eti.2024.103526" target="_blank" >10.1016/j.eti.2024.103526</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Diffusive gradients in thin films (DGT) as a robust and reliable technique to measure bioavailable metals in digestates

Popis výsledku v původním jazyce

Applying diffusive gradients in thin films (DGT) to digestates as a standardised method requires addressing some key challenges, which include unclear method precision, and qualitative and quantitative information on compounds in digestates responsiblefor metal binding. Here, we tested method precision on seven different digestates by measuring Co, Ni, Fe and Mn accumulated in the DGT devices. Apart from determining precision of the DGT measurements, we assessed the method of using gels with twodifferent pore sizes in parallel (restricted gel with smaller and open gel with bigger pore size) to identify organic complexes that bind trace metals. Finally, we tried to understand how the feedstock affects DGT concentrations. The method precision wassatisfactory: the RSD of the DGT technical triplicates for Co were smaller than 10% for all seven digestates. Mn RSD varied more than 10% in only one digestate sample (27% RSD), Ni RSD in two samples (19% twice) and Fe RSD in three (with 18%maximum RSD). The measurements of Co, Ni and Fe in the restricted gel compared to the open gel showed a statistically significant difference in maximum three out of seven samples. Looking at the relation of feedstock and the DGT concentrations of metals, our results showed that the investigated metals were found in higher DGT concentrations in digestates originating from manure, energy crops and food waste than in samples originating from wastewater treatment plants. In conclusion, open DGTappear to be applicable for Co, Ni, Fe and Mn bioavailability measurements for different feedstock.

Název v anglickém jazyce

Diffusive gradients in thin films (DGT) as a robust and reliable technique to measure bioavailable metals in digestates

Popis výsledku anglicky

Applying diffusive gradients in thin films (DGT) to digestates as a standardised method requires addressing some key challenges, which include unclear method precision, and qualitative and quantitative information on compounds in digestates responsiblefor metal binding. Here, we tested method precision on seven different digestates by measuring Co, Ni, Fe and Mn accumulated in the DGT devices. Apart from determining precision of the DGT measurements, we assessed the method of using gels with twodifferent pore sizes in parallel (restricted gel with smaller and open gel with bigger pore size) to identify organic complexes that bind trace metals. Finally, we tried to understand how the feedstock affects DGT concentrations. The method precision wassatisfactory: the RSD of the DGT technical triplicates for Co were smaller than 10% for all seven digestates. Mn RSD varied more than 10% in only one digestate sample (27% RSD), Ni RSD in two samples (19% twice) and Fe RSD in three (with 18%maximum RSD). The measurements of Co, Ni and Fe in the restricted gel compared to the open gel showed a statistically significant difference in maximum three out of seven samples. Looking at the relation of feedstock and the DGT concentrations of metals, our results showed that the investigated metals were found in higher DGT concentrations in digestates originating from manure, energy crops and food waste than in samples originating from wastewater treatment plants. In conclusion, open DGTappear to be applicable for Co, Ni, Fe and Mn bioavailability measurements for different feedstock.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20801 - Environmental biotechnology

Projekt

—

Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Environmental Technology &amp; Innovation

ISSN

2352-1864

e-ISSN

2352-1864

Svazek periodika

2024

Číslo periodika v rámci svazku

3 January

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

103526

Kód UT WoS článku

001164992600001

EID výsledku v databázi Scopus

2-s2.0-85182595323