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A novel strategy for high-throughput sample collection, analysis and visualization of explosives' concentrations for contaminated areas

  • The use of explosives has led to a widespread distribution of 2,4,6-trinitrotoluene (TNT) and its by- and degradation products in the soil on former production and testing sites. The investigation of those large contaminated sites is so far based on a few selected soil samples, due to high costs of conventional HPLC and GC analysis, although huge differences in concentrations can already be found in small areas and different collection depths. We introduce a novel high-throughput screening system for those areas, which combines a smartphone-based collection of GPS data and soil characteristics with a fast MALDI-TOF MS quantification of explosives in soil sample extracts and finally a heatmap visualization of the explosives’ spread in soil and an analysis of correlation between concentrations and soil characteristics. The analysis of a 400 m2 area presented an extensive contamination with TNT and lower concentrations of the degradation and by-products aminodinitrotoluenes (ADNT) and dinitrotoluenes (DNT) next to a former production facility for TNT. The contamination decreased in deeper soil levels and depended on the soil type. Pure humus samples showed significantly lower contaminations compared to sand and humus/sand mixtures, which is likely to be caused by an increased binding potential of the humic material. No correlation was found between the vegetation and the concentration of explosives. Since the results were obtained and visualized within several hours, the MALDI-TOF MS based comprehensive screening and heatmap analysis might be valuable for a fast and high-throughput characterization of contaminated areas.

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Metadaten
Author:Liane Kober, Paul Schaefer, Henner HollertORCiD, Marcus FrohmeORCiDGND
URN:urn:nbn:de:kobv:526-opus4-15981
DOI (Version of Record):https://doi.org/10.1007/s13762-022-04088-w
ISSN:1735-2630
Parent Title (English):International Journal of Environmental Science and Technology
Publisher:Springer Nature
Document Type:Article
Language:English
Year of Publication:2023
Publishing Institution:Technische Hochschule Wildau
Release Date:2023/01/30
Tag:2,4,6-trinitrotoluene; MALDI-TOF MS; explosives; heatmap; risk analysis; smartphone
Volume:20
Issue:2
First Page:1399
Last Page:1410
Source:Kober, S.L., Schaefer, P., Hollert, H. et al. A novel strategy for high-throughput sample collection, analysis and visualization of explosives’ concentrations for contaminated areas. Int. J. Environ. Sci. Technol. 20, 1399–1410 (2023). https://doi.org/10.1007/s13762-022-04088-w
Faculties an central facilities:Fachbereich Ingenieur- und Naturwissenschaften
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie
Funding:Projekt DEAL
Licence (German):Creative Commons - CC BY - Namensnennung 4.0 International
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