CAN THO CITY DEPARTMENT OF SCIENCE AND TECHNOLOGY
Device for rapid detection of methanol in alcoholic beverages
The authors of the Institute of Tropical Technology (Vietnam Academy of Science and Technology) have successfully made a device to quickly and accurately analyze the highly toxic substance methanol in alcoholic beverages.

SPE electrode sensor. Photo: NNC

Methanol is also known as methyl alcohol, wood alcohol, wood naphtha. This is the simplest, light, colorless, volatile, flammable alcohol, with a characteristic odor similar to white ethanol. Unlike ethanol, methanol has a sweeter and more aromatic taste and is highly toxic. In industries, methanol is an antifreeze agent, a solvent for dissolving production materials, an organic solvent for paints and varnishes, a raw material for the production of plastics and for the synthesis of organic substances to produce fuels, such as gas and biodiesel.

In order to quickly, accurately and timely analyze the methanol content in alcoholic beverages, gasoline and fuel, the authors of the Institute of Tropical Technology (Vietnam Academy of Science and Technology) performed the science and technology task "Manufacturing electrochemical sensors and instrumentation systems for the analysis of methanol in alcoholic beverages and gasoline fuels.”

The authors have designed and fabricated a printed electrode (SPE) for application as a methanol analysis sensor. At the same time, set up and optimize the synthesis conditions for PANI and composite films (PANI-Graphene, PANI-CNTs) for modified SPE electrodes. Thereby, the group has successfully manufactured a portable electrochemical device with two versions: a portable electrochemical device with a PLC display screen, a battery that allows field measurements to be performed without connecting the computer and external power source; and portable electrochemical device connected to a computer, an external power source can be installed at analysis stations with full electrochemical measurement and analysis functions. At the same time, successfully connecting the two electrochemical systems above with the SPE electrode, creating a methanol sensor system, allowing analysis in the field or in the laboratory.

The results of methanol analysis in 0.1M NaOH environment show that the sensor has high sensitivity, meeting the analysis requirements for samples of alcoholic beverages and gasoline fuels with concentrations of 50 mg/L to 10,000 mg. /L, response time less than 3 seconds, good repeatability.

Comparing the operation of the sensor with the GC/MS method (gas chromatography-coupled mass spectrometry) shows that the control analysis results for distilled alcohol (white wine) samples added 2,000 ppm methanol and A95 gasoline samples add 10,000 ppm methanol, giving quite similar results.

According to the authors, the advantage of the sensor method is direct analysis, fast results, while the GC/MS method requires sample dilution and long analysis time.

According to Professor. Dr. Tran Dai Lam, Project Manager, quantitative analysis of methanol by in-depth analysis such as chromatographic methods is time consuming from sampling to results, the process is complicated and costly. Meanwhile, using simple and low-cost test kits, but only when the methanol is present in alcohol with high concentration and cannot be detected when it is mixed with other substances inherent in alcoholic beverages fake wine, poor quality wine, and etc.).

The research project has been accepted by the Department of Science and Technology of Ho Chi Minh City.

ctngoc

www.khoahocphattrien.vn (ctngoc)
Most viewed news

Vietnam Blockchain Association and Binance signed cooperation agreement

Accordingly, the two sides will cooperate to popularize blockchain in three areas: training, research and technology application.

Automatic system for handling residuals in mechanical processing

The system is manufactured by a group of authors at Nhat Tinh Technical Service Limitted Company, which can replace imports and improve competitiveness for domestic casting enterprises.

Launching Vietnam Blockchain Alliance

The Vietnam Blockchain Alliance under the Vietnam Digital Media Association has set itself a mission to connect the community and advise regulatory agencies to manage policies and legal frameworks on Blockchain, digital assets and money.

Vingroup AI Engineer Training Program: Opportunity to own scientific publications

During the 10-month training course, students have the opportunity to participate in large projects and own scientific publications in the fields of Biomedical Informatics, Medical Image Processing and Natural Language Processing.

Occupational safety and hygiene training course in 2022 in Can Tho

In the morning of June 17, 2022, Can Tho Center for Standards, Metrology and Quality Engineering (CATECH) under Can Tho City Department of Science and Technology coordinated with the Management Board of Can Tho Export Processing and Industrial Parks to organize a training course on occupational safety and hygiene in 2022 for staffs in charge of labor protection and occupational safety and hygiene network at enterprises.

Can Tho will take place workshop "Science, technology and innovation to promote digital transformation in agriculture" in 2022

The city-level scientific workshop with the topic "Science, technology and innovation promotes digital transformation in the agricultural sector" will take place on June 24.

The role of science and technology in digital transformation in agriculture

With the success of the 4th industrial revolution, digital transformation is now an inevitable trend, a matter of survival for countries, organizations, businesses and consumers around the world. Huge changes in labor productivity, user experiences and new business models are being formed, showing the great role and impact in today's social life of digital transformation to every industries, such as industry, commerce, healthcare, traffic, tourism, business services and etc.

Press release of the scientific workshop "Science, technology and innovation to promote digital transformation in agriculture"

Under the impact of the fourth industrial revolution, on the basis of achievements in science, technology and innovation, the digital transformation process has had a strong impact on most areas of the world economic and social life in each country in the world.

Propagating and disseminating knowledge of intellectual property and brand development

In the morning of June 15, 2022, Can Tho City Department of Science and Technology established a scientists team to evaluate the content and funding for the implementation of the project "Propaganda and dissemination of knowledge of intellectual property and brand development.” under the Program to develop intellectual property of Can Tho city until 2030. The appraisal team is led by Mr. Ngo Anh Tin – Director of the Department of Science and Technology of Can Tho city. The study is carried out by Mrs. Nguyen Thuy Hang. Can Tho Science and Technology Information Center is a presiding agency. The project implementation period is 24 months.

Related news
CAN THO CITY DEPARTMENT OF SCIENCE AND TECHNOLOGY

Copyright @ 2021 belongs to the Can Tho City Department of Science and Technology
Address: No. 02, Ly Thuong Kiet, Tan An Ward, Ninh Kieu District, Can Tho City
Phone: 0292.3820674, Fax: 0292.3821471; Email: sokhcn@cantho.gov.vn
Head of the Editorial Board: Ms. Tran Hoai Phuong - Deputy Director of the
Can Tho City Department of Science and Technology

Copyright © 2021 All rights reserved | This template is made by CASTI'1987