Process-Integrated Analytical Strategies for Soil Xenobiotics and Occupational Risk

Occupational exposure to soil-borne pesticides remains a critical safety and process-management challenge in industrial and agro-industrial settings. This work proposes a process-integrated analytical workflow that couples comparative instrumental identification of soil xenobiotics with an occupational risk assessment framework. We comparatively evaluate GC-MS (gas chromatography–mass spectrometry), HPLC (high performance liquid chromatography), FTIR (Fourier-Transform Infrared Spectroscopy), LC-MS/MS (Liquid Chromatography coupled with tandem Mass Spectrometry), and ICP-MS (Inductively Coupled Plasma Mass Spectrometry) against matrix complexity, sensitivity, cost, and throughput, and implement the Quick, easy, cheap, effective, rugged, safe (QuEChERS) method-based sample preparation followed by GC-MS and LC-MS/MS to demonstrate applicability on representative soil and food-chain samples. Complementary risk tools (toxicity–probability matrices, exposure pathway diagrams) and an integrated monitoring scheme that combines environmental data with biomonitoring are used to link concentrations to exposure potential and control priorities. In a soil case sample, low-level organochlorines were detected with total DDT at 0.010 mg/kg and total HCH at 0.003 mg/kg, illustrating how analytical outputs feed decision matrices for prioritizing interventions. Case analyses from agricultural and industrial contexts indicate that targeted substitution, optimized application, ventilation and dust control, PPE (personal protective equipment) adherence, and worker training can measurably reduce symptoms and biomarkers of exposure. Overall, a complementary, process-analytical approach—integrating sensitive multi-technique detection with exposure assessment and continuous monitoring—supports proactive risk management and aligns with process systems and monitoring themes. Recommendations include standardizing workflows, coupling routine environmental monitoring with biomonitoring where feasible, and embedding preventive policies and training into industrial management systems.