Since 1, 2, 3-Benzotriazole (BTA) is one of the most commonly used metal passivators in transformer oil, on-site and quantitative detection of BTA plays a significant role in fast evaluation of the performance of the insulating oil. Herein, we proposed a cycle-growth synthetic protocol for yielding two-dimensional (2D) plane-based surface-enhanced Raman scattering (SERS) substrates with tunable optical property and controllable interparticle distance, and an extraction material, so called colloidal lignin particles (CLPs), for the fast separation of BTA from oil matrix. After BTA from transformer oil were adsorbed by hydrophilic CLPs, highly reproducible SERS signal of BTA can be obtained by dropping on the substrate. The characteristic Raman shift at 1386 cm of BTA has been selected to establish a good linearity between its relative intensity and concentration in the range of 1-300 mg/L, and the detection limit for BTA was down to 0.12 mg/L. Moreover, the time consumption for the whole detection process of real sample including sample pretreatment and SERS measurements was less than 30 min. It is highly expected that the combination of CLPs with SERS can accomplish the on-site detection of trace BTA in transformer oil.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.saa.2021.119469 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Novel gas sensing mechanisms of Pd and Rh-doped h-BN monolayers for detecting dissolved gases (H、CH、and CH) in transformer oil.
Front Chem
December 2024
College of Engineering and Technology, Southwest University, Chongqing, China.
Detecting dissolved gases in transformer oil is crucial for assessing the operational status of transformers. The gas composition in transformer oil can reflect the health status of the equipment and help identify potential failure risks in a timely manner. Based on density functional theory (DFT), Pd and Rh atoms were doped into the h-BN monolayer, and the most stable adsorption structures for each were first explored.
View Article and Find Full Text PDFOpen-closed single-tube on-beam tuning-fork-enhanced fiber-optic photoacoustic spectroscopy.
Photoacoustics
October 2024
Wuhan National Laboratory for Optoelectronics (WNLO) and National Engineering Research Center of Next Generation Internet Access-system, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.
A proof-of-concept on-beam tuning-fork-enhanced photoacoustic sensor based on an open-closed single-tube acoustic-microresonator (AmR) was proposed and investigated for the first time, to the best of our knowledge. Due to the high acoustic amplification effect, the open-closed AmR improved the detection sensitivity by 54 times with respect to the bare tuning fork (TF). Compared to traditional dual-tube/single-tube on-beam spectrophone configuration, the developed approach significantly facilitates the laser beam alignment and reduces the sensor size and gas consumption.
View Article and Find Full Text PDFKolmogorov-Arnold Network in the Fault Diagnosis of Oil-Immersed Power Transformers.
Sensors (Basel)
November 2024
Department of Communications, School of Electrical and Computer Engineering, University of Campinas, Campinas 13083-852, Brazil.
Instabilities in energy supply caused by equipment failures, particularly in power transformers, can significantly impact efficiency and lead to shutdowns, which can affect the population. To address this, researchers have developed fault diagnosis strategies for oil-immersed power transformers using dissolved gas analysis (DGA) to enhance reliability and environmental responsibility. However, the fault diagnosis of oil-immersed power transformers has not been exhaustively investigated.
View Article and Find Full Text PDFAssessment of the Aging State for Transformer Oil-Barrier Insulation by Raman Spectroscopy and Optimized Support Vector Machine.
Sensors (Basel)
November 2024
College of Electrical and Electronic Engineering, Wenzhou University, Wenzhou 325035, China.
Accurate assessment of the aging state of transformer oil-barrier insulation is crucial for ensuring the safe and reliable operation of power systems. This study presents the development of indoor accelerated thermal aging experiments to simulate the degradation of oil-immersed barrier insulation within transformers. A series of samples reflecting various aging states was obtained and categorized into six distinct groups.
View Article and Find Full Text PDFStudy on the Preparation and Test Method of Transformer Oil Used in Laboratory.
Materials (Basel)
December 2024
Key Laboratory of Ultra-Weak Magnetic Field Measurement Technology, Ministry of Education, School of Instrumentation Science and Optoelectronics Engineering, Beihang University, Beijing 100191, China.
The power transformer is one of the most important parts of a power system. The transformer oil in a transformer not only increases its insulation strength, but also helps its cooling. Cellulose particles are one of the main factors affecting the breakdown characteristics of transformer oil, and the withstand voltage test can effectively detect the quality of transformer oil.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!