Abstract
This paper presents a simple and convenient analytical method for determination of 1,4-dioxane in surfactants and detergents by using a novel SPME fiber. For the preparation of the fiber, the surface of a fused silica capillary tubing was modified by means of aluminium tri-tert-butoxide in a straightforward grafting process. The surface of our proposed fiber provides a Lewis acid–base interaction with analyte functional groups. The main factors affecting the extraction were optimized by using a central composite design method, which leads to the following optimum conditions: extraction temperature of 34 °C, extraction time of 4 min, equilibrium time of 13 min, and salt content of 25% (w/v). The optimum conditions showed a linear range from 0.005 to 60 μg g−1. LOD and LOQ of the proposed method were estimated to be 0.0015 and 0.005 μg g−1, respectively. This method was also applied for the analysis of some real samples including ethoxylated fatty alcohol, sodium lauryl ether sulfate, dish-washing agents, and shampoos by using the standard addition method.
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Acknowledgments
The authors are grateful to Dr. Farhad Raofie for providing the commercial PDMS fiber. This work was kindly supported by the research affairs of Shahid Beheshti University.
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Dedicated to Professor Mostafa M. Amini on the occasion of his 60th birthday.
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Hosseiny Davarani, S.S., Masoomi, L., Banitaba, M.H. et al. A New Aluminium Hydroxide Coating on Fused Silica Fiber for the Determination of 1,4-Dioxane in Surfactants and Detergents Using HS-SPME-GC. Chromatographia 75, 371–377 (2012). https://doi.org/10.1007/s10337-012-2213-9
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DOI: https://doi.org/10.1007/s10337-012-2213-9