Related Experiment Video
Updated: Jun 1, 2026
08:33
Use of Capillary Aerosol Generator in Continuous Production of Controlled Aerosol for Non-Clinical Studies
Published on: April 12, 2022
Quantitative RP-HPLC Determination of Some Aldehydes and Hydroxyaldehydes as Their 2,4-Dinitrophenylhydrazone
E Koivusalmi1, E Haatainen, A Root
1Analytical Research PB 310, Corporate Technology, NESTE OY, FIN-06101 Porvoo, Finland.
Analytical Chemistry
|June 14, 2011
Summary
A new high-performance liquid chromatography method quantifies aliphatic and β-hydroxyaldehydes. This technique allows for the preparation of derivatives for aldehydes lacking pure reference compounds, with detection limits as low as 4.3 μg/L.
Area of Science:
- Analytical Chemistry
- Chromatography
Background:
- Accurate quantification of aliphatic and β-hydroxyaldehydes is crucial in various chemical analyses.
- Existing methods may lack the capability to derivatize and quantify aldehydes without pure reference standards.
Purpose of the Study:
- To develop and describe a high-performance liquid chromatographic (HPLC) method for the quantitative determination of aliphatic aldehydes and β-hydroxyaldehydes.
- To establish a reliable derivatization procedure for β-hydroxyaldehydes lacking pure reference compounds.
Main Methods:
- Quantitative determination using high-performance liquid chromatography (HPLC).
- Formation of 2,4-dinitrophenylhydrazone derivatives for aldehyde analysis.
- Development of a derivative preparation method for specific β-hydroxyaldehydes.
Main Results:
- The developed HPLC method enables quantitative determination of target aldehydes.
- A successful derivatization protocol was established for β-hydroxyaldehydes without available pure reference compounds.
- The method achieved detection limits ranging from 4.3 to 21.0 μg/L, varying by aldehyde type.
Conclusions:
- The described HPLC method provides a robust approach for aldehyde quantification.
- The new derivatization technique expands the applicability of HPLC for analyzing challenging aldehyde compounds.
- This method offers sensitive and reliable aldehyde determination in relevant matrices.
Related Concept Videos
01:15NMR Spectroscopy and Mass Spectrometry of Aldehydes and Ketones
In aldehydes, the hydrogen atom connected to the carbonyl carbon helps distinguish aldehydes from other carbonyl compounds using ¹H NMR spectroscopy. The closeness of aldehydic hydrogen to the electrophilic carbonyl carbon highly deshields the hydrogen atom causing its signal to appear around 10 ppm in the ¹H NMR spectra. α hydrogens split the aldehydic proton signal, which helps identify the number of α hydrogens in the molecule. For instance, one α hydrogen creates a doublet for an aldehydic...
01:32Aldehydes and Ketones with HCN: Cyanohydrin Formation Overview
Cyanohydrins are compounds that contain –CN and –OH groups on the same carbon atom. They are formed by the nucleophilic addition of the cyanide ions to the carbonyl group. Cyanide ions are highly basic and nucleophilic and can be generated from HCN under aqueous conditions. However, since HCN is a weak acid, the number of cyanide ions generated is very small. Hence, a small amount of base or KCN/NaCN is added to HCN to increase the concentration of the cyanide ions in the reaction mixture.
01:16IUPAC Nomenclature of Aldehydes
Aldehydes are named based on the systematic nomenclature rules set by the IUPAC. For acyclic aldehydes, the longest carbon chain containing the aldehydic (–CHO) group is considered the parent chain. The aldehyde is named by replacing the last letter “e” in the hydrocarbon name with “al”. For instance, a simple, seven-carbon-membered acyclic aldehyde is called heptanal, derived from heptane. The carbon chain is numbered starting from the aldehydic carbon, although the aldehydic carbon’s locant...
01:15High-Performance Liquid Chromatography: Types of Detectors
The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...
00:48¹H NMR of Labile Protons: Deuterium (²H) Substitution
This lesson illustrates the role of deuterium substitution in simplifying the NMR spectrum of compounds comprising labile protons. One method employed is the use of deuterium. Amongst the three isotopes of hydrogen, deuterium (2H) has a nucleus composed of one proton and one neutron. When the D2O solvent is added to a pure dry ethanol solution, its labile proton is substituted with deuterium.
01:10Aldehydes and Ketones with HCN: Cyanohydrin Formation Mechanism
Cyanohydrins are formed when cyanide nucleophiles and carbonyl compounds like aldehydes and ketones react. A strong base, the cyanide ion, catalyzes cyanohydrin formation. The ions are generated from HCN under aqueous conditions. Once the cyanide ions are generated, the first step involves the nucleophilic attack of the cyanide ions on the electrophilic carbonyl carbon. This attack shifts the π electrons from the C=O to the oxygen atom forming the alkoxide ion intermediate. The alkoxide anion...