pH-Dependent response of a hydrogen peroxide sensing probe

Khorami, Hamed Akbari; Wild, Peter; Brolo, Alexandre G.; Djilali, Ned

doi:10.1016/j.snb.2016.06.094

Cited by 6 publications

(2 citation statements)

References 23 publications

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“…Therefore, these cross-interferences need to be taken into consideration when planning an experiment or choosing an application. The pH interferences for PB/PW based detection schemes were investigated in detail by Khorami et al [138].…”

Section: Redox Systemsmentioning

confidence: 99%

Possibilities and Challenges for Quantitative Optical Sensing of Hydrogen Peroxide

2017

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Abstract:Hydrogen peroxide (H 2 O 2 ) plays a key role in many biological processes spanning from coral bleaching, over cell signaling to aging. However, exact quantitative assessments of concentrations and dynamics of H 2 O 2 remain challenging due to methodological limitationsespecially at very low (sub µM) concentrations. Most published optical detection schemes for H 2 O 2 suffer from irreversibility, cross sensitivity to other analytes such as other reactive oxygen species (ROS) or pH, instability, temperature dependency or limitation to a specific medium. We review optical detection schemes for H 2 O 2 , compare their specific advantages and disadvantages, and discuss current challenges and new approaches for quantitative optical H 2 O 2 detection, with a special focus on luminescence-based measurements. We also review published concentration ranges for H 2 O 2 in natural habitats, and physiological concentrations in different biological samples to provide guidelines for future experiments and sensor development in biomedical and environmental science.

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Section: Redox Systemsmentioning

confidence: 99%

Possibilities and Challenges for Quantitative Optical Sensing of Hydrogen Peroxide

2017

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“…H 2 O 2 can oxidize Prussian white into Prussian blue, and this reaction was explored for sensing H 2 O 2 . A fiber optic sensor for H 2 O 2 was developed by chemically depositing a Prussian white film on the tip of a multimode optical fiber . The sensor exhibits a response in the H 2 O 2 concentration range from 0.3 to 400 μM but is pH-dependent.…”

Section: Sensors For Humidity and Water Fractionmentioning

confidence: 99%