A near-infrared (NIR) sub-ppm level photoacoustic sensor for hydrogen sulfide (H_2S) using
a differential Helmholtz resonator (DHR) as the photoacoustic cell (PAC) was presented …

Due to the typical volatility of gaseous pollutant methyl mercaptan (CH 3 SH), the
development of a facile, reliable, and accurate onsite environmental surveillance of highly …

Colorimetry is to determine the component content usually comparing or measuring the
“RGB” values, which has the advantages of quick response and visual comparison …

The application of smartphone-based color evaluation of passive sampling devices for
gases has only been sparsely reported. The present review aims to compile available …

Abstract Hydrogen sulfide (H 2 S), a potential indicator of fish freshness, necessitates the
development of rapid quantitative detection methods for ensuring food safety. Nevertheless …

Although semiconductor metal oxide-based sensors are promising for gas sensing, low-
power and room temperature operation (24±1° C) remains desirable for practical …

Pineapple leaves, a raw agricultural waste biomass material, were used to synthesize
microcrystalline cellulose (MCC) through extraction, bleaching, and hydrolysis. Then, the …

Periodontitis, a chronic disease, can result in irreversible tooth loss and diminished quality of
life, highlighting the significance of timely periodontitis monitoring and treatment. Meanwhile …

In order to develop a highly efficient H2S gas sensor at low working temperature, in this
work, a kind of novel Ce-doped ZnCo2O4 hollow microspheres (Ce/ZnCo2O4 HMSs) were …

In colorimetric detection, an analyte may be determined both qualitatively and quantitatively
by keeping track of color changes that seem to be perceptible to the unaided eye. The …