Vacuum ultraviolet laser induced breakdown spectroscopy for detecting sulphur in thermally aged transformer insulation material

Neettiyath, Aparna; Alli, Muhammad Bilal; Hayden, P.; Vasa, Nilesh J.; Sarathi, R.; Costello, J. T.

doi:10.1016/j.sab.2019.105730

Cited by 9 publications

(5 citation statements)

References 11 publications

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“…There are similar challenges with halogens when detecting sulfur in samples by LIBS system. Therefore, most researchers select the emission lines of sulfur located in the NIR or VUV region as the research object, [52][53][54] with only a few studies using spectral lines in the VIS region. 55,56 In addition, the experiment has certain environmental requirements to enhance the intensity of the characteristic sulfur lines.…”

Section: Case Studiesmentioning

confidence: 99%

In-Situ Online Detection Of Atmospheric Volatile Organic Compounds Based On Laser Induced Breakdown Spectroscopy: A Review

Liu

2023

At.Spectrosc.

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This review's main purpose is to provide a succinct overview of recent developments in the field of volatile organic compounds (VOCs) detection based on Laser-induced breakdown spectroscopy (LIBS). VOCs are important air pollutants, which have great harm to the environment and human body. It is of great significance to realize the rapid detection of VOCs in the atmospheric environment. LIBS is a novel atomic emission spectroscopy technology, which can achieve the rapid in-situ detection of substances and shows great potential in the online monitoring of atmospheric VOCs. To illustrate the development and difficulties of LIBS technology in atmospheric VOCs detection, some typical cases for various aspects are listed, including the detection of harmful elements in VOCs, source tracing of VOCs, the identification of isomers, and the detection of VOCs in living environment.

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Section: Case Studiesmentioning

confidence: 99%

In-Situ Online Detection Of Atmospheric Volatile Organic Compounds Based On Laser Induced Breakdown Spectroscopy: A Review

Liu

2023

At.Spectrosc.

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“…The lower limit of detection for different elements on the surface of the pressboard, obtained using the LIBS technique is shown in the Table 3. Neettiyath et al [31] have performed the LIBS intensity ratio of aged pressboard material in transformer oil containing DBDS and estimated the amount of sulphur concentration from its calibration curves. In the present study, copper and carbon peaks on the surface of the EIP material gave a maximum LOD.…”

Section: Analysis Of Pressboard Materials Through Libsmentioning

confidence: 99%

Classification of thermal ageing impact of ester fluid‐impregnated pressboard material adopting LIBS

et al. 2021

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This article reports the thermal ageing of ester fluid-impregnated pressboard material along with its performance evaluation using optical emission spectroscopy (OES) and classification using machine-learning algorithms adopting laser-induced breakdown spectroscopy (LIBS). The surface discharge analysis on ester-impregnated pressboard (EIP) is studied using OES and the plasma temperature was evaluated based on the Cu I emission lines which were higher under the negative DC compared with the positive DC and AC voltages. The LIBS analysis was performed on the EIP material operated at different energy levels in order to acquire the optimal energy required to be used for its classification algorithm. The intensity ratio and electron density evaluated from LIBS studies correlated well with the plasma temperature. The lower limit of detection (LOD) calculated based on linear regression analysis for copper peak was around 3.5 times higher than the identification of carbon peak. The machine-learning techniques like principal component analysis and neural network algorithm have been performed on the LIBS spectral dataset in order to classify the ageing of EIP material. Artificial neural network adopting LIBS provided a better classification accuracy on all the aged samples compared with principal component analysis which classified only for the samples aged at higher temperatures.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…Three papers have reported the use of LIBS for the analysis of high voltage insulators . 96,274,275 Surface pollution can lead to surface flashover voltage in wet weather such as rain or fog. This is considered to be a serious accident.…”

Section: Inorganic Chemicals and Materialsmentioning

confidence: 99%

“…Neettiyath et al used vacuum UV-LIBS to determine S in thermally aged oil impregnated pressboard insulation material taken from high voltage transformers. 275 The authors described the experimental setup in detail giving a schematic diagram of the LIBS instrumentation. The LIBS was operated in a spatially resolved and temporally integrated mode with helium being used to confine the plasma formed and to increase the sensitivity of the S emission.…”

Section: Inorganic Chemicals and Materialsmentioning

confidence: 99%

Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials

Carter

Clough

Fisher

et al. 2020

J. Anal. At. Spectrom.

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Vacuum ultraviolet laser induced breakdown spectroscopy for detecting sulphur in thermally aged transformer insulation material

Cited by 9 publications

References 11 publications

In-Situ Online Detection Of Atmospheric Volatile Organic Compounds Based On Laser Induced Breakdown Spectroscopy: A Review

In-Situ Online Detection Of Atmospheric Volatile Organic Compounds Based On Laser Induced Breakdown Spectroscopy: A Review

Classification of thermal ageing impact of ester fluid‐impregnated pressboard material adopting LIBS

Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials

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