| Summary: | 碩士 === 國立高雄師範大學 === 化學系 === 101 === An analytical method using (Fe3O4@SiO2@G) graphene magnetic particles as a magnetic solid phase extraction adsorbent simultaneously detrmined three chlorophenols of 2,4-dichlorophenol (2,4-DCP), 2,3,4,6-chlorophenol (2,3,4,6-TeCP), pentachlorophenol (PCP) by HPLC .
In this study, the magnetite(Fe3O4) were prepared by the chemical co-precipitation method of Fe(Ⅲ)/ Fe(Ⅱ) and modified with APTES and TEOS, further Fe3O4@SiO2@Graphene was synthesized.
Extraction efficiencies by Fe3O4@SiO2@Graphene of chlorophenols compounds was determined. The results showed that the limit of detection for three chlorophenols (2,4-DCP, 2,3,4,6-TeCP, PCP) were 0.002 μg/mL, 0.005 μg/mL, 0.003 μg/mL. The range of good linearity was 0.005 to 0.1 μg/mL. Enrichment factors were 32 to 112.
When the method applied for real sample, three chlorophenols did not detect in Kaoping river. The recoveries range were from 80 to 114%. It is easy, simple and efficiency method to analyze the chlorophenols.
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