Plastic particles in urban compost and their grain size distribution

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F24%3A10254875" target="_blank" >RIV/61989100:27230/24:10254875 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27240/24:10254875 RIV/61989100:27350/24:10254875 RIV/61989100:27610/24:10254875 RIV/61989100:27730/24:10254875

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0269749124007395#abs0020" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0269749124007395#abs0020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.envpol.2024.124025" target="_blank" >10.1016/j.envpol.2024.124025</a>

Result language

angličtina

Original language name

Plastic particles in urban compost and their grain size distribution

Original language description

Gathering information on plastic particles in composts and the processes they undergo is important in terms of potentially limiting their further entry into the environment, for example, in improving the fertilising properties of soils. Microplastics (MPs) were determined in composts produced from urban greenery. They are present in decreasing order: polyethylene terephthalate, polystyrene, polyethylene, and polypropylene. The determination of polymers and additives used to improve their properties was performed by pyrolysis and gas chromatography with mass spectrometric detection (Py-GC/MS). Additives and microplastics are most concentrated in composts in the 0.315˗0.63 and 0.63˗1.25 mm grain size class, together with the carbon contained in the compost dry matter. Additives form 0.11˗0.13% of MPs in dry matter of compost. The average concentration of microplastics in the particle size class from 0.63 to 1.25 mm is 2434 +- 224 mg/kg; in the total sample of composts, it is 1368 +- 286 mg/kg of P-MPs.For composts with particle size &lt;2.5 mm, a relationship between the C/N ratio and the plastic particle concentration was statistically significant. It documents a similar behaviour of lignocellulose and plastic particles during the degradation processes. A relationship between the concentration of polymer markers and additives in the compost dry matter and their concentrations in the leachate has been demonstrated. The leachability from compost is higher for additives than for chemical compounds originating from the decomposition of the main components of MPs. The suitability of the use of the compost for agricultural purposes was monitored by the germination index (GI) for watercress. The lowest value of the GI was determined in the particle size class from 0.63 to 1.25 mm. The leachability of polymer markers and additives alone cannot explain the low GI value in this grain size class. The GI value is also influenced by the leachability of chemical compounds characterised by the value of dissolved organic carbon (DOC) and water-leachable nitrogen (Nw). A statistically significant dependence between DOC/Nw and the germination index value was found.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10500 - Earth and related environmental sciences

Project

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Continuities

O - Projekt operacniho programu

Publication year

2024

Confidentiality

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

Name of the periodical

Environmental Pollution

ISSN

0269-7491

e-ISSN

1873-6424

Volume of the periodical

2024

Issue of the periodical within the volume

351

Country of publishing house

GB - UNITED KINGDOM

Number of pages

16

Pages from-to

124025

UT code for WoS article

001239639600001

EID of the result in the Scopus database

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