ReviewSensors (Basel, Switzerland)2026
LED-Based Photometric Systems for Decentralized Chemical Analysis: Applications, Design Considerations, and Practical Limitations.
Review in Sensors (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
Abstract
Photometric methods are essential in analytical chemistry for environmental, biological, and industrial monitoring. Conventional spectrometers rely on deuterium or tungsten lamps, which are bulky, energy-intensive, and costly to maintain. Advances in light emitting diode (LED) technology have enabled compact, energy-efficient, and cost-effective alternatives for portable and decentralized chemical analysis. This review provides an application-oriented synthesis of recent developments in LED-based photometry, systematically comparing major analytical fields to identify common design strategies, recurring performance limitations, and emerging trends. Representative applications include environmental monitoring, point-of-care diagnostics, food quality control, industrial process analysis, and STEM education. Design-related aspects, including optical layouts, detector selection, wavelength matching, and calibration strategies, are discussed where they influence analytical performance and practical implementation. Recent innovations, such as multi-wavelength LEDs, 3D-printed housings, and microcontroller-based systems, have further expanded the accessibility and adaptability of LED-based photometers. Across the reviewed studies, progress has been driven primarily by translating established photometric methods into compact, application-specific platforms rather than by developing new analytical assays. Despite these advances, challenges remain regarding sensitivity, calibration robustness, validation, and methodological standardization. By identifying cross-cutting challenges and successful implementation strategies, this review provides guidance for the future development of robust, low-cost, and reliable LED-based photometric systems for decentralized chemical analysis.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.