Exploring the impacts of microplastics and associated chemicals in the terrestrial environment – Exposure of soil invertebrates to tire particles

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Salla Selonen, Andraž Dolar, Anita Jemec Kokalj, Lyndon N.A. Sackey, Tina Skalar, Virgínia Cruz Fernandes, Diana Rede, Cristina Delerue-Matos, Rachel Hurley, Luca Nizzetto, Cornelis A.M. van Gestel, Exploring the impacts of microplastics and associated chemicals in the terrestrial environment – Exposure of soil invertebrates to tire particles, Environmental Research, Volume 201, 2021, 111495, ISSN 0013-9351, https://doi.org/10.1016/j.envres.2021.111495. (https://www.sciencedirect.com/science/article/pii/S0013935121007891)

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Title: Exploring the impacts of microplastics and associated chemicals in the terrestrial environment – Exposure of soil invertebrates to tire particles
Author: Selonen, Salla; Dolar, Andraž; Jemec Kokalj, Anita; Sackey, Lyndon N.A.; Skalar, Tina; Cruz Fernandes, Virgínia; Rede, Diana; Hurley, Rachel; Nizzetto, Luca; van Gestel, Cornelis A.M.
Publisher: Elsevier
Date: 2021
Language: en
Belongs to series: Environmental Research 201: 111495
ISSN: 0013-9351
URI: http://hdl.handle.net/10138/332612
Abstract: Abrasion of tire wear is one of the largest sources of microplastics to the environment. Although most tire particles settle into soils, studies on their ecotoxicological impacts on the terrestrial environment are scarce. Here, the effects of tire particles (<180 μm) on three ecologically relevant soil invertebrate species, the enchytraeid worm Enchytraeus crypticus, the springtail Folsomia candida and the woodlouse Porcellio scaber, were studied. These species were exposed to tire particles spiked in soil or in food at concentrations of 0.02%, 0.06%, 0.17%, 0.5% and 1.5% (w/w). Tire particles contained a variety of potentially harmful substances. Zinc (21 900 mg kg−1) was the dominant trace element, whilst the highest concentrations of the measured organic compounds were detected for benzothiazole (89.2 mg kg−1), pyrene (4.85 mg kg−1), chlorpyrifos (0.351 mg kg−1), HCB (0.134 mg kg−1), methoxychlor (0.116 mg kg−1) and BDE 28 (0.100 mg kg−1). At the highest test concentration in soil (1.5%), the tire particles decreased F. candida reproduction by 38% and survival by 24%, and acetylcholinesterase (AChE) activity of P. scaber by 65%, whilst the slight decrease in the reproduction of E. crypticus was not dose-dependent. In food, the highest test concentration of tire particles reduced F. candida survival by 38%. These results suggest that micro-sized tire particles can affect soil invertebrates at concentrations found at roadsides, whilst short-term impacts at concentrations found further from the roadsides are unlikely.
Description: Highlights • Negative impacts of tire particles on soil invertebrates are possible at roadsides. • Tire particles slightly decreased reproduction and survival of springtail F. candida. • Tire particles decreased AChE activity of isopod P. scaber. • No dose-dependent effects of tire particles on enchytraeid E. crypticus observed. • Tire particles contained a variety of potentially harmful substances.
Subject: tire wear particles
enchytraeid
springtail
isopod
soil ecotoxicology
microplastics
soil
roadsides
Folsomia candida
Enchytraeus crypticus
Porcellio scaber
tyres
tires
car tires
car tyres
rubber
Subject (ysa): ekotoksikologia
ympäristön saastuminen
maaperä
maaekosysteemit
selkärangattomat
hyppyhäntäiset
Folsomia candida
harvasukasmadot
änkyrimadot
Enchytraeus crypticus
siirat
Porcellio scaber
altistuminen
mikroroskat
muovit
renkaat
kumi
haitalliset aineet


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