A New Aluminium Hydroxide Coating on Fused Silica Fiber for the Determination of 1,4-Dioxane in Surfactants and Detergents Using HS-SPME-GC

作者：Davarani Saied Saeed Hosseiny^*; Masoomi Leila; Banitaba Mohammad Hossein; Zhad Hamid Reza Lotfi Zadeh; Sadeghi Omid; Samiei Azam

来源：Chromatographia, 2012, 75(7-8): 371-377.

DOI：10.1007/s10337-012-2213-9

• HS-SPME-GC
• 1,4-Dioxane
• Detergents
• Chemical grafting process
• Aluminium hydroxide coating

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 degrees 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 mu g g(-1). LOD and LOQ of the proposed method were estimated to be 0.0015 and 0.005 mu g 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.

• 出版日期2012-4