Method Development For The Influence Of
Matrix On Selected Organochlorine Pesticide
Residue Analysis In Surface Water By GC-MS
Author(s)
C. Rimayi, F. Mtunzi, C. V. Wyk & D. Odusanya
Abstract
An automated solid phase extraction (SPE) method coupled to GC-MS method
for the analysis of selected organochlorine pesticides was developed and
validated for the purposes of studying the matrix effects. The analytical method
showed a significant degree of validity when tested against parameters such as
linearity, repeatability and sensitivity. Four different reversed sorbent phases,
including a Supelco LC18, Strata C18- E and Strata-X (styrene divinyl benzene)
were tested for organochlorine extraction efficiency. The LC-18 proved to be
the most robust and effective sorbent phase as it produced better recoveries
varying from 90-130% for most analytes. It was then concluded that the method
developed was suitable for further research towards the influence of the matrix
on selective determination of the selected organochlorine pesticides.
Keywords: solid phase extraction (SPE), organochlorine pesticides, gas
chromatography-mass spectrometry (GC-MS).
1 Introduction
In order to fully understand the principles behind the matrix effects in GC-MS
analysis, it is of paramount importance to develop a robust and rugged validated
analytical method that shows a high degree of specificity for each particular
Keywords
solid phase extraction (SPE), organochlorine pesticides, gas
chromatography-mass spectrometry (GC-MS)
Related Book
Other papers in this volume
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