W Ni, G Zhu, F Liu, Z Li, C Xie, Y Han - Energy & Fuels, 2021 - ACS Publications
Carboxylic acids (CAs), common oxygen-containing compounds in petroleum samples, have been paid high attention in several areas, including petroleum geochemistry …
F Wan, L Du, W Chen, P Wang, J Wang, H Shi - Energies, 2017 - mdpi.com
Analyzing the concentration of low molecular acids dissolved in oil is vital in the oil-paper insulation aging diagnostic procedure of power transformers. The existing methods cannot …
P Prosr, R Polansky, J Pihera… - 2007 Annual Report …, 2007 - ieeexplore.ieee.org
The behavior of the oil-paper insulating systems of transformers is primary determined by paper and oil basic properties. Recent studies are concerned to study of using synthetic oils …
I Kuselman, YI Tur'yan, T Burenko, I Goldfeld… - Talanta, 1999 - Elsevier
A new pH-metric method for determination of acid values in oilseeds without titration has been developed in the range 0.6–10 and more mg KOH/g. The method is based on a rapid …
K Jyonosono, T Imato, N Imazumi, M Nakanishi… - Analytica chimica …, 2001 - Elsevier
A spectrophotometric FIA method for the determination of the total base number (TBN) in a lubricant was proposed, which involved using an acid–base buffer solution prepared with a …
E Kardash-Strochkova, YI Tur'yan, I Kuselman… - Accreditation and quality …, 2002 - Springer
The results of two interlaboratory comparisons of acid number determinations in used motor oils are discussed. It is shown that the comparability of the measurement results is not as …
E Strochkova, YI Tur'yan, I Kuselman - Talanta, 1999 - Elsevier
A heptane-mediated extraction of acids from hydraulic oils is proposed for pH-metric acid number determination without titration. The acids are extracted in the reagent consisting of …
I Kuselman - Measurement Uncertainty in Chemical Analysis, 2003 - Springer
An approach to assess the permissible ranges for results of replicate determinations using uncertainty calculation is discussed. The approach is based on the known range distribution …
ABSTRACT A touch sensing material called QTCTM is currently produced by Peratech Ltd. The material is a composite with conducting particles in a polymer matrix. When a pressure …