Mercury vapor detection using smartphone cameras and red cabbage extract highlighted in Vietnam conference

Philippe Hernandez — Wed, 27 Sep 2023 11:42:44 +0000

The detection of mercury vapor or Hg⁰_(g) using Copper(I) Iodide synthesized with red cabbage extract was the highlight of a recent research presentation in Vietnam, where Department of Chemistry Chair and Chemical Sensors researcher Alan Rodelle M. Salcedo, PhD talked about the technique using smartphone camera-based colometric detection. Salcedo, who spoke during the August 25-26, 2023 International Conference on Science, Technology, and Innovation for Sustainable Development in Vietnam, was one of the presenters in the session “Innovative Life Science and Smart Materials.”

Salcedo’s work, based on papers co-authored with Academician Professor Emeritus Fortunato B. Sevilla III, PhD and published in Instrumentation Science and Technology and Acta Manilana, was a response to the need for ways to detect atmospheric pollutants of concern in the environment. Using digital imaging analysis, the parameters included the color values, polymer reagent binder, amount of Cul, exposure time, and Hg⁰ concentration.

With the theme “Establishment of Sustainable Technological Solution for Industry and Society”, the two-day conference gathered academics, researchers, scholars, and industry practitioners from around the world to share and discuss recent advances in sustainable science, technology, and innovation. The four Innovative Tracks of the conference – Innovative Life Science and Smart Materials (iLS), Innovative Advanced Production and Industrial Engineering (iAP), Innovative Sharing Economy and Sustainable Science (iSE), and Innovative Education Science and Quality Assurance (iES) – guided the discourse, encapsulating a wide array of topics and scopes within the realm of sustainable development.

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Salcedo, Morabe, Sevilla win NAST outstanding paper award for cadmium(II) detection

Philippe Hernandez — Thu, 14 Jul 2022 21:57:00 +0000

On July 14, 2022, the research team of Asst. Prof. Alan Rodelle M. Salcedo, PhD, Ms. Nova Carisa F. Morabe, and Academician Professor Emeritus Fortunato B. Sevilla III, PhD received the Outstanding Scientific Paper Award from the National Academy of Science and Technology. They received the distinction for the paper “Colometric detection of Cadmium(II) using Glutathione-Capped Gold Nanoparticles.”

The team, who is part of the Sensors research interest group of the Research Center for the Natural and Applied Sciences, published the work in Acta Manilana, the official journal of the RCNAS. According to the abstract, the “glutathione-capped gold nanoparticles (GSH-AuNPs) were prepared by chemical reduction of HAuCl4 using glutathione (GSH) as the capping agent and NaBH4 as the reducing agent. GSH-AuNPs were characterized by UV-Vis spectroscopy, IR spectroscopy, and transmission electron microscopy (TEM). The pH value of the synthesized GSH-AuNPs solution was also measured to be 7.20. A colorimetric method for Cd2+ was developed based on the aggregation of GSH-AuNPs induced by its interaction with Cd2+, which is also exhibited as a red to blue color change.”

The detection method showed “good analytical performance such as low cost, sensitivity, rapidity, and visual detection.” The team concluded that “the GSH-AuNPs-based method described here demonstrates potential application for the detection of Cd2+ in actual water sample for assessment and monitoring purpose.”

The paper can be accessed here:

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Sensors Archives - ���ϲ�ֱ������

Mercury vapor detection using smartphone cameras and red cabbage extract highlighted in Vietnam conference

Salcedo, Morabe, Sevilla win NAST outstanding paper award for cadmium(II) detection

Sensors Archives - ��ϲ�ֱ��