Solid-phase microextraction using pencil lead as sorbent for analysis of organic pollutants in water |
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| Affiliation: | 1. Materials Science and Technology Division, National Institute for Interdisciplinary Science and Technology (NIIST-CSIR), Thiruvananthapuram 695019, India;2. Academy of Science and Innovative Research (AcSIR), India;3. Department of Electronics, Cochin University of Science and Technology, Cochin 682022, Kerala, India;1. Centre for the Environment, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India;2. Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781 039, Assam, India |
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| Abstract: | Most solid-phase microextraction methods are based on poly (dimethylsiloxane)-coated silica fibers. Is the present study, pencil lead was used as an alternative sorbent for solid-phase imcroextraction. Its application to three organic pollutants with different polarity in water was investigated. The detection limit for determination by gas chromatography with electron capture detector was 0.005 ng ml−1 for lindane, 0.05 ng ml−1 for methyl parathion and 1 ng ml−1 for 2-chlorophenol. The presence of dissolved humic substances (10 mg l−1) in water did not affect the extraction of the three analytes. |
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