{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T20:04:12Z","timestamp":1772309052037,"version":"3.50.1"},"posted":{"date-parts":[[2026]]},"group-title":"SSRN","reference-count":19,"publisher":"Elsevier BV","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>Soil contamination by organic compounds such as pesticides poses a significant environmental challenge, requiring efficient and practical monitoring tools. Current analytical extraction methods such as QuEChERS, while sensitive and robust, often rely on costly and labor-intensive procedures involving sample collection, transport, and extraction. This study introduces a simpler and more cost-effective method for multiclass organic contaminant detection in soil using low-cost semi-disposable solid-phase microextraction (SPME) fibers for direct, non-invasive field extraction and portable sampling. The method consists of conditioning the fibers, after which they are directly inserted into the wet soil (water is added previously). After the extraction time, they are inserted into 120 \u00b5L of ethanol for retro-extraction. Finally, this extract is combined with an analyte protectant solution and injected into a GC-MS\/MS system. The method was optimized for soil water content and extraction time, using two different soils with different textures and composition. The results show that it is not possible to reliably distinguish between close analyte concentrations (25, 50 and 100 \u00b5g\/kg), meaning the method cannot be used quantitatively. Nevertheless, detection limits were in the range of 1\u201320 \u00b5g\/kg while assuring (nearly) unbiased detection. Simplified and cheaper sample transport for analysis, following a mailing-kit concept, appears operationally feasible, as there were no differences between samples retro-extracted right after extraction and only 26 hours later (p = 0.05), assuming enclosed storage. Thus, the very small and light fibers can be transported to the lab themselves, rather than the liquid extract or a solid sample (as with traditional techniques). This technique presents a viable option for preliminary field monitoring and fast laboratory screening, providing a proxy for soil contamination levels and supporting informed decisions on subsequent targeted quantitative analyses. Future adaptation via e.g., DART-MS integration, may enhance throughput and field readiness with potential for commercial development in environmental diagnostics.<\/jats:p>","DOI":"10.2139\/ssrn.6320061","type":"posted-content","created":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T19:37:35Z","timestamp":1772307455000},"source":"Crossref","is-referenced-by-count":0,"title":["Fast and Simple Detection of Multiclass Pesticides in Soil using Semi-Disposable SPME"],"prefix":"10.2139","author":[{"given":"Jo\u00e3o","family":"Brinco","sequence":"first","affiliation":[]},{"given":"Marco  D.","family":"R. Gomes da Silva","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7397-9438","authenticated-orcid":true,"given":"Eduardo","family":"Mateus","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2911-6432","authenticated-orcid":true,"given":"Nazar\u00e9","family":"Couto","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5606-3591","authenticated-orcid":true,"given":"Alexandra","family":"B. Ribeiro","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5853-0192","authenticated-orcid":true,"given":"Paula","family":"Guedes","sequence":"additional","affiliation":[]}],"member":"78","reference":[{"key":"ref1","first-page":"453","article-title":"Targeting the soil quality and soil health concepts when aiming for the United Nations Sustainable Development Goals and the EU Green Deal","volume":"2020","author":"A Bonfante","journal-title":"SOIL"},{"key":"ref2","author":"Directive","journal-title":"of the European Parliament and of the Council of 12 November 2025 on soil monitoring and resilience (Soil Monitoring Law"},{"key":"ref3","doi-asserted-by":"crossref","first-page":"1532","DOI":"10.1016\/j.scitotenv.2018.10.441","article-title":"Pesticide residues in European agricultural soils -A hidden reality unfolded","volume":"653","author":"V Silva","year":"2019","journal-title":"Science of The Total Environment"},{"key":"ref4","doi-asserted-by":"crossref","DOI":"10.1016\/j.envpol.2021.116827","article-title":"Cocktails of pesticide residues in conventional and organic farming systems in Europe -Legacy of the past and turning point for the future","volume":"278","author":"V Geissen","year":"2021","journal-title":"Environmental Pollution"},{"key":"ref5","doi-asserted-by":"crossref","DOI":"10.1016\/j.microc.2023.109465","article-title":"Analysis of pesticide residues in soil: A review and comparison of methodologies","volume":"195","author":"J Brinco","year":"2023","journal-title":"Microchemical Journal"},{"key":"ref6","doi-asserted-by":"crossref","first-page":"772","DOI":"10.1016\/j.trac.2004.07.008","article-title":"Determination of pesticides and their degradation products in soil: critical review and comparison of methods","volume":"23","author":"V Andreu","year":"2004","journal-title":"TrAC Trends in Analytical Chemistry"},{"key":"ref7","doi-asserted-by":"crossref","first-page":"1258","DOI":"10.5740\/jaoacint.SGE_Tadeo","article-title":"Review of sample preparation techniques for the analysis of pesticide residues in soil","volume":"95","author":"J L Tadeo","year":"2019","journal-title":"Journal of AOAC INTERNATIONAL"},{"key":"ref8","article-title":"Recent Advances in Nanoparticle-Based Optical Sensors for Detection of Pesticide Residues in Soil","author":"C Zhang","year":"2023","journal-title":"Biosensors"},{"key":"ref9","doi-asserted-by":"crossref","DOI":"10.1016\/j.snb.2024.135492","article-title":"Soil pesticides pollution detection and specific recognition using electronic nose","volume":"408","author":"C Kong","year":"2024","journal-title":"Sensors and Actuators B: Chemical"},{"key":"ref10","author":"T Pihlstr\ufffdm","year":"2021","journal-title":"Analytical quality control and method validation procedures for pesticide residues analysis in food and feed SANTE 11312\/2021"},{"key":"ref11","first-page":"1403","article-title":"New trend in the extraction of pesticides from the environmental and food samples applying microextraction based green chemistry scenario: a review","volume":"52","author":"Muhammad Saqaf","year":"2019","journal-title":"Critical Reviews in Analytical Chemistry"},{"key":"ref12","doi-asserted-by":"crossref","first-page":"2145","DOI":"10.1021\/ac00218a019","article-title":"Solid phase microextraction with thermal desorption using fused silica optical fibers","volume":"62","author":"C L Arthur","year":"1990","journal-title":"Analytical Chemistry"},{"key":"ref13","volume":"4","author":"Y Nolvachai","year":"2023","journal-title":"Solid phase microextraction for quantitative analysis -Expectations beyond design? 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