Capillary Electrophoresis-Mass Spectrometry of Naphthenic Acids in Environmental Waters: A Multivariate Approach
Article
Overview
Figshare
Overview
abstract
The principal toxic components of oil sands tailing pond include the naphthenic acids--a class of long-chain aliphatic carboxylic acids bearing a range of ring structures and bond saturation, along with a variety of heteroatom functionalities. Currently the extraction of naphthenic acids from water samples is lengthy and efficiency measures (% recovery, ionization efficiency, etc...) are usually stated with reference to the bulk mixture. Many suitable standard mixtures are available for the naphthenic acids, but the physical characteristics of the individual constituents of these mixtures are largely unknown, as are those in environmental water samples. Applying multivariate approaches, including principal component analysis and regression, to naphthenic acids data derived from environmental water samples provides a "way in" for automatically classifying samples based on statistical differences and potentially circumvents some of the analytical difficulties presented by these complex contaminant mixtures. A new, successful method for capillary electrophoresis-mass spectrometry of naphthenic acids mixtures is presented along with chemometric approaches to data analysis and clustering. Abstract EN5 202.
