Description: Tire wear (TW) constitutes a significant source of microplastic in terrestrial ecosystems. It is known that particles emitted by roads can have an effect up to 100 m into adjacent areas. Here, we apply for the first-time thermal extraction desorption gas chromatography-mass spectrometry (TED-GC/MS) to determine TW in soil samples by detection of thermal decomposition products of styrene-butadiene rubber (SBR), without additional enrichment. Additionally, zinc contents were determined as an elemental marker for TW. Mixed soil samples were taken along three transects along a German motorway in 0.3, 2.0, and 5.0 m distance from the road. Sampling depths were 0-2, 2-5, 5-10, and 10-20 cm. Four fine fractions, 1 000-500, 500-100, 100-50, and <50 mikrom, were analyzed. TW contents based on SBR ranged from 155 to 15 898 mg kg-1. TW contents based on zinc were between 413 and 44 812 mg kg-1. Comparison of individual values of SBR and zinc reveals SBR as a more specific marker. Results confirm that most TW ends up in the topsoil within a 2 m distance. The sampling strategy resulted in representative data for a larger area. Standard deviations of quadruple TED-GC/MS determination of SBR were <10% for all grain size fractions. TED-GC/MS is a suitable analytical tool for determining TW in soil samples without the use of toxic chemicals, enrichment, or special sample preparation. © 2022 The Authors
Global identifier:
Doi(
"10.60810/openumwelt-446",
)
Types:
Origin: /Bund/UBA/openUMWELT
Tags: Gummi ? Autobahn ? Straßenseitenraum ? Zinkgehalt ? Reifenabrieb ? Tracer ? Zink ? GC-MS ? Probenaufbereitung ? Oberboden ? Mikroplastik ? Abbauprodukt ? Bodenprobe ? Chemikalien ? Daten ? Desorption ? Korngröße ? Terrestrisches Ökosystem ? Thermolyse ? Anreicherung ? Partikel ? Gummiabrieb ?
License: unbekannt
Language: Englisch/English
Issued: 2022-01-01
Time ranges: 2022-01-01 - 2022-01-01
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