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Demonstrates NDMA detection in water using a novel paper-based sensor, suggesting a practical solution for monitoring contaminants.
-based channels provide linear detection ranges of 0-100 ppm and 0-30 ppm, with limits of detection of 4 ppm and 1.5 ppm, respectively. Interference studies, proper masking strategies, and dual-channel readout ensured high selectivity, while stability tests demonstrated excellent device stability over four weeks. Spike recovery experiments in tap, river, and lake water showed consistent recovery performance with RSD < 10%. This sustainable platform costs less than $0.2 per device, is compatible with smartphone-based readout, and offers a practical alternative to conventional analytical techniques. The findings presented here open possibilities to expand on-chip photochemical reactions in paper-based and other microfluidic systems for the detection of a broader range of contaminants.
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Aryal et al. (2026) studied this question.
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