Related Experiment Video
Updated: Feb 12, 2026

Author Spotlight: Addressing Technical and Subjective Challenges in Measuring Classroom Attention
Published on: December 15, 2023
Artificial intelligence-processed colorimetric sensor based on hierarchically porous iron nanozyme for visualized,
Cheng Chen1, Taimei Cai2, Jianwen Tian1
1School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.
Abstract:
A hierarchically porous iron-based nanozyme (pFezyme) exhibiting excellent oxidase (OXD)-like activity was successfully synthesized. Carbosulfan decomposes to release sulfide groups (-SH), which significantly diminish the OXD-like activity of nanozyme. Consequently, pFezyme was employed as a colorimetric sensor, enabling the visual, rapid, and sensitive detection of carbosulfan. The pFezyme colorimetric sensor demonstrated a broad detection range (0.7 to 3 × 104 nM), an ultra-low limit of detection (0.48 nM), and a rapid detection time (18 min). Furthermore, a portable platform integrated with artificial intelligence (AI) processing was constructed by combining a smartphone with pFezyme colorimetric sensor. Through AI-based processing on smartphone, the color signal from the sensor was rapidly converted into RGB values, maintaining high sensitivity (LOD = 0.67 nM) across the broad detection range (0.7 to 3 × 104 nM). Importantly, both pFezyme colorimetric sensor and AI-integrated portable platform enabled rapid and sensitive detection of carbosulfan in food samples.
Related Concept Videos
Range
15.9; 16.1; 15.2; 14.8; 15.8; 15.9; 16.0; 15.5
Measurements of the amount of soda in a 16-ounce can vary since different subjects record these measurements or since the exact amount - 16 ounces of liquid, was not...
Detection of Gross Error: The Q Test
Intelligence
Detection of Black Holes
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
Difference from Background: Limit of Detection
The LOD indicates the presence or absence...
Effects of EDTA on End-Point Detection Methods
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a...

