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Simultaneous Determination of Octylphenol, Nonylphenol and Bis(2-ethylhexyl)phthalate in Fish Samples Using Two Internal Standards
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2001, v.14 no.3, pp.244-252
Kim,
J.
(2001). Simultaneous Determination of Octylphenol, Nonylphenol and Bis(2-ethylhexyl)phthalate in Fish Samples Using Two Internal Standards. Analytical Science and Technology, 14(3), 244-252.
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Abstract
A comprehensive analytical method of endocrine distruptors[i.e., nonylphenol(NP), octylphenol(OP), bis(2-ethylhexyl)phthalate(BEHP)] is fish samples was developed using two internal standards. This method employed closed culture tube extraction with dichloromethane and solvent exchange to iso-hexane and SPE(2g) aminopropyl column, followed by determination on gas chromatograph linked to mass spectrometer(GC/MS) operated in the single ion monitoring(SIM) mode. The recoveries of nonylphenol and octyphenol in the range of <TEX>$0.2{\sim}20{\mu}g/g$</TEX> using 1-phenyl decanol as one internal standard were over 75%, and recovery of bis(2-ethylhexyl)phthalate in the range of <TEX>$0.4{\sim}40{\mu}g/g$</TEX> using bis(2-ethylbutyl)phthalate(BEBP) as the other internal standards was showed over 102%. The present method was applied to fish samples from Korea and UK. The range of concentrations for nonylphnol(NP) and bis(2-ethylhexyl)phthalate in Korean fish were <TEX>$0.02{\sim}0.06{\mu}g/g$</TEX> in 2 samples and <TEX>$0.18{\sim}2.03{\mu}g/g$</TEX> in 9 samples respectively, but bis(2-ethylhexyl)phthalate(BEHP) in UK samples was found <TEX>$2.99{\mu}g/g$</TEX> in just 1 sample. But octylphenol(OP) was not dected in any samples by this method. This two internal standard method provides a more precise analytical tool to investigate endocrine disruptors in a biological matrices of limited quantity.
- keywords
- two internal standards, nonylphenol, octylphenol, bis(2-ethylhexyl)phthalate, fish samples
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