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Innovative approach for quantitative determination of ingested microplastics by Daphnia magna : use of diferential scanning calorimetry and thermogravimetry
ID
Procházková, Petra
(
Avtor
),
ID
Kalčíková, Gabriela
(
Avtor
),
ID
Maršálková, Eliška
(
Avtor
),
ID
Zlámalová Gargošová, Helena
(
Avtor
),
ID
Kučerík, Jiří
(
Avtor
)
PDF - Predstavitvena datoteka,
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MD5: 8A4DFF86FE9276CAD7FC4B247A8459E0
URL - Izvorni URL, za dostop obiščite
https://link.springer.com/article/10.1007/s10973-024-12985-0
Galerija slik
Izvleček
Due to the serious environmental impacts of plastic pollution, some conventional plastics have been replaced with biodegradable alternatives. However, these biodegradable options can also fragment and form microplastics, which can be ingested by and harm various biota. The standard methods for quantifying ingested microplastics involve digestion of the gut or the whole organism using acidic, alkaline, or oxidative processes. However, these aggressive methods may destroy biodegradable microplastics, leading to erroneous results. Therefore, in this study, we employed thermal analysis methods, specifically differential scanning calorimetry (DSC) and thermogravimetry (TG), to quantify the ingestion of poly-3-hydroxybutyrate (P3HB), a biodegradable microplastic, by the freshwater crustacean, Daphnia magna. During chronic experiments, we analysed organisms exposed to P3HB with sizes smaller than 125 and 63 μm, at concentrations ranging from 1.56–25 mg L$^{−1}$. DSC identified an endothermic peak associated with the melting of semicrystalline P3HB, and its enthalpies were utilised to compute the number/mass of P3HB ingested by D. magna. Notably, shifts in melting points suggested that higher concentrations induced particle agglomeration, and these agglomerates could not penetrate deeply into the organism. The TG approach involved subtracting the mass loss between 200 and 400 °C in D. magna specimens exposed to P3HB suspensions from controls without P3HB exposure. Both methods provided comparable data, revealing that, depending on particle size, individual D. magna ingested up to 10% of their body mass. Our findings indicate that both methods effectively detect P3HB (and potentially other plastic fragments), with DSC demonstrating better sensitivity. While the suggested approach did not enable us to calculate the level of determination or quantification, we were able to demonstrate that DSC can detect P3HB in only one specimen of D. magna exposed to the lowest suspension concentration. This indicates that D. magna exposed to the 63 μm fraction ingested approximately 3 μg of P3HB, whereas those exposed to the 125 μm P3HB ingested around 4 μg of P3HB. The introduced methods expand the possibilities for detecting ingested microplastics and probably also nanoplastics, in zooplankton and possibly also other species.
Jezik:
Angleški jezik
Ključne besede:
microplastics
,
Daphnia magna
,
poly(3-hydroxybutyrate)
,
biodegradable plastics
,
ingestion
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FKKT - Fakulteta za kemijo in kemijsko tehnologijo
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2024
Št. strani:
8 str.
Številčenje:
Vol. , iss.
PID:
20.500.12556/RUL-155752
UDK:
504.5:678:543.57
ISSN pri članku:
1388-6150
DOI:
10.1007/s10973-024-12985-0
COBISS.SI-ID:
192157443
Datum objave v RUL:
15.04.2024
Število ogledov:
284
Število prenosov:
35
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Objavi na:
Gradivo je del revije
Naslov:
Journal of thermal analysis and calorimetry
Skrajšan naslov:
J. therm. anal. calorim.
Založnik:
Springer
ISSN:
1388-6150
COBISS.SI-ID:
13803815
Licence
Licenca:
CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:
To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
mikroplastika
,
Daphnia magna
,
poli(3-hidroksibutirat)
,
biorazgradljiva plastika
Projekti
Financer:
Drugi - Drug financer ali več financerjev
Številka projekta:
FCH-S-23- 8297
Financer:
ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Številka projekta:
P2-0191
Naslov:
Kemijsko inženirstvo
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