Applied Chemical Engineering

Quantitative analytical validation and chemometric structuring of multicomponent electrochemical gas measurements at trace concentration levels

Bashar Abdulazeez Mahmood

Department of Chemistry, Faculty of Education for Pure Science, University of Anbar, Ramadi 31001, Iraq

Qays Najih Abed

Director of Anbar Environment Directorate, Anbar, Ramadi 31001, Iraq

DOI: https://doi.org/10.59429/ace.v9i3.5864

Keywords: Analytical validation; Chemometrics; Electrochemical sensors; Trace analysis; Multicomponent gas detection

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Abstract

This study highlights the numerical analytic authentication and chemometric organizing of multicomponent gas measurement through electrochemical sensors at trace concentration stages under difficult ecological conditions. The methodology combines calibration modeling, electrochemical sensing, and chemometric information processing to affirm consistent quantitative performance in interference-inclined measurement domains.

The analytic performance of the planned system was assessed using the key figures of support which include recognition limits (LOD), precision (expressed as relative standard deviation, RSD), linearity (R²), as well as selectivity. The paradigm showed low detection limitations within the range of about demonstrated 0.002-0.010 ppm and satisfactory precision of around (RSD: 2.3-6.8%), which indicates consistent analytic response appropriate for trace-level and quantification. Calibration results showed potent linearity (R² ≥ 0.993), to confirm the approaches capacity for precise quantification examination.

The system sustained a steady analytic function to demonstrate robustness of complex measurement situation. Chemomteric analysis utilizing Principal Component Analysis (PCA) improved data interpretation and supported analytic selectivity to enable isolation between combustion-inclined gasses (NO₂, H₂S, CO) and dust-linked atmospheric elements (SO₂, CO₂, dustfall) within a multicomponent matrix.

Comparative assessment with recognised analytic procedures reporte3d in the previous study provides a sort of comparable accuracy, although with moderation it will offer an advantageous practical field application. Based on the assessed figures of advantage, the projected analytic model can be seen as a fit-for-purpose approach for reliable multicomponent gas resolve at trace concentration stages.

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