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Technology and Engineering
- ISSN: 2333-2581
- Modern Environmental Science and Engineering
The Study of Matrix Interference of Vegetable Samples in Dispersive Liquid-Liquid Microextraction (DLLME)
Premla Devi Chander1, Chai Mee Kin1 and Wong Ling Shing2
1. University Tenaga Nasional, Malaysia
2. Inti International University,Malaysia
Abstract: The matrix problems of vegetable samples such as Radish (Raphanus sativus), Cabbage (Brassica oleracea) and Cucumber (Cucumis sativus) in Dispersive liquid-liquid microextractio (DLLME) were studied. High yield of extraction efficiency (%) was obtained when the matrix interference in the sample reduced by using optimal dilution. In present study, six different volume of distilled water (50 ml, 100 ml, 150 ml, 200 ml, 250 ml and 300 ml) were added into the cabbage, cucumber and radish samples and the extraction efficiencies at three times injection in GC-FID for each studied volumes were evaluated. The extraction recoveries of PAHs in vegetable samples were improved from the ranged value of 80.07% to 111.19% by using an optimal dilution method. All three types of vegetable have different matrix effect due to different group of complex structure’s presence in the matrix. The physicochemical properties of extraction solvent (1-bromo-3-methylbutane) affected the adsorption of PAHs from the complex matrix. The solubility, polarity and hydrophobic interaction of 1-bromo-3-methylbutane with PAHs were discussed.
Key words: PAHs, 1-bromo-3-methylbutane, matrix interference
