Sodium-Polyacrylate-Based Electrochemical Sensors for Highly Sensitive Detection of Gaseous Phenol at Room Temperature.
Tea RomihEva MenartVasko JovanovskiAndrej JeričSamo AndrenšekSamo B HočevarPublished in: ACS sensors (2020)
The detection of volatile organic compounds with electrochemical gas sensors is still very challenging regarding their sensitivity, selectivity, and operation at room temperature. There is a need for robust, sensitive, inexpensive, and yet easy-to-operate sensors for phenol and other phenolic compounds that function reliably under ambient conditions. Herein, we present a phenol gas sensor based on a combination of a semisolid, alkaline sodium polyacrylate, and commercial screen-printed electrodes. Sodium polyacrylate was employed as a multifunctional sensing material serving as a (i) gel-like electrolyte, (ii) accumulation milieu, and (iii) derivatization medium. Under ambient conditions, the sensor showed excellent sensitivity in the low ppbv (μg m-3) range, a good linear operation in the examined concentration range of 0.1-1.0 ppmv for up to 105 min accumulation, and low sensitivity toward examined interferences. The sensor also indicated a possibility to differentiate between several phenolic compounds based on their oxidation potential. Given its favorable electroanalytical performance, a strong application potential is envisioned in topical fields such as environmental monitoring, cultural heritage preservation, and occupational health and safety.
Keyphrases
- room temperature
- ionic liquid
- sensitive detection
- low cost
- air pollution
- human health
- loop mediated isothermal amplification
- particulate matter
- label free
- gold nanoparticles
- healthcare
- quantum dots
- public health
- mental health
- drug delivery
- ms ms
- high throughput
- risk assessment
- wound healing
- molecularly imprinted
- liquid chromatography tandem mass spectrometry
- cancer therapy
- high performance liquid chromatography
- nitric oxide
- solid state
- real time pcr
- single cell
- high resolution
- tandem mass spectrometry