Related Experiment Video
Updated: Sep 26, 2025

Fluorescent Paper Strips for the Detection of Diesel Adulteration with Smartphone Read-out
Published on: November 9, 2018
Hyphenated structural identification of additives in transmission fluids
F H M van Zelst1,2, J Romanuka3, A P M Kentgens1
1Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands. A.Kentgens@nmr.ru.nl.
Abstract:
Transmission fluids and other lubricants are used to reduce friction in engines and other surfaces. Additives in these transmission fluids are important for prolonging their lifetime and obtaining the desired physical properties for the lubricant. In this work, we show the successful structural identification of an important class of additives in transmission fluids by hyphenating several analytical techniques in-line. First, a separation of the additives in a transmission fluid was achieved within 10 minutes by using supercritical fluid chromatography. SFC-1H NMR was then used as a novel analysis method to structurally identify different additives in transmission fluids, in combination with mass spectrometry data. By this unique hyphenation of SFC, NMR spectroscopy and MS, several alkylated diphenylamines were identified, which are one of the most important classes of antioxidants.
More Related Videos
09:04Identifying Per- and Polyfluorinated Chemical Species with a Combined Targeted and Non-Targeted-Screening High-Resolution Mass Spectrometry Workflow
Published on: April 18, 2019
10:12Flash NanoPrecipitation for the Encapsulation of Hydrophobic and Hydrophilic Compounds in Polymeric Nanoparticles
Published on: January 7, 2019
Related Concept Videos
Transmission Shafts: Problem Solving
Next, use bending moment diagrams for the shaft to...
Design Example: Deciding Thickness of Lubricating Fluid in a Shaft
To calculate the required thickness of the lubricant layer, the tangential velocity at the shaft's surface must first be determined. This velocity is calculated by converting the rotational speed to angular...
Characteristics and Nomenclature of Homopolymers
¹H NMR: Pople Notation
A proton...
Design of Transmission Shafts
Nomenclature of Alkynes