23/04/2026
รายการ เครือข่ายสายตรงวิทยุสถาบัน (ช่วงสนทนาสถาบัน)
เวลาออกอากาศ วันพฤหัสบดี ที่ 23 เมษายน 2569 เวลา 12.45 -13.00 น.
พื้นที่ออกอากาศ เครือข่ายพันธมิตรวิทยุสถาบันทั่วประเทศ และทาง https://nuradio.nu.ac.th/
ประเด็น คณะวิทยาศาสตร์ มหาวิทยาลัยนเรศวร พัฒนาชุดทดสอบสารกำจัดวัชพืช 2,4-ไดคลอโรฟีนอกซีแอซีติกแอซิด (2,4-ดี) ชนิดคัดกรองแบบเทียบแถบสีมาตรฐาน ตอบโจทย์การตรวจคัดกรองเบื้องต้น เฝ้าระวังความปลอดภัยด้านอาหารและสิ่งแวดล้อม
ผู้ให้สัมภาษณ์ในรายการ รองศาสตราจารย์ ดร.วิภารัตน์ เชื้อชวด ชัยสิทธิ์ ภาควิชาเคมี คณะวิทยาศาสตร์ มหาวิทยาลัยนเรศวร
รูปแบบการสัมภาษณ์ รายการสด ทางโทรศัพท์
Radio Interview (English Version) by Assoc.Prof.Dr.Wipharat Chuachuad Chaiyasith
Program: Institutional Radio Network Talk
Topic: Development of a Colorimetric Test Kit for 2,4-D Herbicide Screening
Q1: Could you tell us about the background and inspiration behind this innovation?
The idea for developing this test kit originated from our research focus in analytical chemistry, particularly in creating simple and practical tools for real-world applications. In Thailand, herbicides are widely used in agriculture, especially to control weeds and improve crop productivity. However, this widespread use also raises concerns about chemical residues in food and the environment.
We recognized that while advanced analytical techniques exist, they are not always accessible to farmers or field officers. Therefore, we aimed to develop a simple, rapid, and cost-effective screening tool that can be used directly in the field without requiring sophisticated instruments.
Q2: How widely is 2,4-D used, and what are the associated risks?
2,4-D, or 2,4-dichlorophenoxyacetic acid, is one of the most commonly used herbicides worldwide. It belongs to the phenoxy herbicide group and is highly effective in controlling broadleaf weeds in crops such as rice fields, sugarcane, and corn plantations.
However, excessive or improper use can lead to residues in soil, water, and agricultural products. These residues may pose risks to human health, such as irritation, neurological effects, and potential long-term impacts if exposure accumulates over time. Additionally, it can affect ecosystems, including aquatic life.
Because of these concerns, regulatory agencies such as Codex and the European Union have established Maximum Residue Limits, or MRLs, to ensure food safety.
Q3: What is the concept behind your colorimetric test kit, and why is it necessary?
Our test kit is based on a colorimetric principle, meaning that it detects the presence of 2,4-D through a visible color change. The result is then compared with a standard color strip to estimate the concentration level.
This approach is important because it allows for rapid screening. Instead of waiting for laboratory analysis, users can obtain results within minutes. This helps identify high-risk samples that may require further confirmation using advanced techniques such as HPLC or LC-MS/MS.
In many cases, early screening is the key to preventing contaminated products from entering the food chain.
Q4: Could you explain the development process and key features of your innovation?
The development process involved designing a chemical reaction system that produces a clear and stable color change in the presence of 2,4-D. We then optimized the conditions to ensure sensitivity, selectivity, and reproducibility.
One of the key features of our test kit is its simplicity. It does not require complex sample preparation or expensive equipment. The results can be interpreted visually using a standard color chart.
Additionally, the system is designed to be low-cost and portable, making it suitable for on-site testing. It also aligns with the concept of green analytical chemistry by minimizing chemical usage and waste.
Q5: What are the benefits of this test kit?
This test kit offers several important benefits:
It improves accessibility to chemical analysis, especially for farmers and local authorities
It reduces analysis time from hours or days to just a few minutes
It lowers the cost of monitoring chemical residues
It enhances food safety and environmental surveillance
It supports early decision-making before sending samples for confirmatory analysis
Overall, it serves as a practical tool for proactive risk management.
Q6: What about intellectual property and future commercialization?
We are currently in the process of filing for a petty patent to protect this innovation.
In terms of commercialization, we see strong potential for collaboration with industry partners to produce and distribute the test kits on a larger scale. We are also exploring ways to integrate this technology with modern tools such as paper-based devices and smartphone-based image analysis to improve accuracy and data management.
In the future, we aim to develop a smart detection platform that combines chemistry with digital technology and artificial intelligence.
Q7: What message would you like to share with listeners and young researchers?
For those who are interested in this innovation or would like to collaborate, please feel free to contact us at the Department of Chemistry, Faculty of Science, Naresuan University.
Finally, I would like to encourage young researchers to focus on creating research that has real impact on society. Innovation does not always have to be complex—sometimes, simple solutions can make the biggest difference.
Thank you very much.
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