Optimization by orthogonal array design of solid phase extraction of organochlorine pesticides from water |
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Authors: | K. K. Chee M. K. Wong H. K. Lee |
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Affiliation: | (1) Department of Chemistry, National University of Singapore, Kent Ridge, 0511, Republic of Singapore |
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Abstract: | Summary A two-level orthogonal array design (OAD) to optimize the solid phase extraction of organochlorine pesticides is described. Parameters including eluting solvents, SPE cartridges packed with C18-bonded silica from different manufacturers, duration of air drying, pH, salinity and humic acid have been examined using OAD. This systematic approach was then used to optimize the relevant parameters required for off-line solid phase extraction of organochlorine pesticides from water. The optimized parameters were employed to perform extraction of the pesticides from natural waters. |
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Keywords: | Solid phase extraction Optimization Orthogonal array design Organochlorine pesticides Natural waters |
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