Sep 2026· Talanta: The International Journal of Pure and Applied Analytical Chemistry· Vol 313 Pt C, pp.
130652
· 0 citations· 236 references
Medicine
Abstract
Paper-based colorimetric assays offer a low-cost and portable approach for pesticide residue screening, yet reliable quantification remains a major barrier to practical deployment. Unlike previous reviews centered mainly on sensing-platform classification or individual recognition strategies, this review establishes a continuous analytical framework linking target recognition, signal transduction, and quantitative readout engineering. Representative sensing approaches are examined to clarify how variability introduced at different stages propagates through the analytical workflow and ultimately affects quantitative performance. The analysis indicates that reliability is governed by the weakest link in the sample-to-result chain, while downstream signal amplification or data modeling cannot compensate for unstable upstream recognition, sample transport, or color generation. On this basis, this review proposes a design-oriented evaluation framework to guide the development of paper-based pesticide analytical devices with improved reproducibility, standardization, and field applicability.
Ensuring food safety requires the detection of trace-level contaminants such as pesticides, mycotoxins, and heavy metals. Analytical approaches for these analytes should feature high sensitivity, good selectivity, and compatibility with aqueous matrices; surface-enhanced Raman spectroscopy (SERS) satisfies these requir...
Anion contamination in aqueous and environmental systems poses severe threats to ecological balance and human health, necessitating the development of low-cost, eco-friendly, and high-performance sensing platforms for rapid and accurate anion detection. Dual-mode colorimetric and fluorescent sensors integrate the intui...
H. Nawaz, Yu-Han Wang, Irfan Shabbir et al.· International Journal of Bio...· 0 citations
Organophosphate pesticides are extensively used in agriculture, but their improper use and persistence in the environment can pose significant risks to human health and ecological safety. Rapid, simple, and cost-effective methods for detecting organophosphate contamination are essential, particularly in resource-limite...
Asif A. Pathan, Deepika Gupta, R. B. Malabadi· International Journal of Sci...· 0 citations
Paper-based colorimetric sensors offer a low-cost and accessible platform for point-of-care (POC) analysis, but enzyme activity loss during coating and drying can weaken analytical signals and require high enzyme loadings or complex immobilization procedures. Although surfactants are widely used to improve wettability...
Tea polyphenols largely determine tea quality, flavor, and health benefits. Reliable detection of these compounds is therefore critical for quality control and process optimization. This review categorizes current sensing strategies into four types: optical, electrochemical, spectroscopic/nondestructive, and sensor arr...
