Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 925, Issue 1-2, Pages 297-301Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0021-9673(01)01039-1
Keywords
pressurised liquid extraction; 4-nonylphenol; 4-nonylphenol ethoxylate
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The pressurised liquid extraction (PLE) of 4-nonylphenol (4-NP) with methanol (100 degreesC and 100 atm) from river sediments was compared with methanolic Soxhlet extraction, the standard method for the sediment analysis. The PLE method showed a precision (average RSD ranged from 6 to 33%) and an accuracy (average recovery 85 and 87% for 4-NP and 4-NPE, respectively) comparable to those of Soxhlet. The extraction was performed on river sediments and no organic carbon content influence was found. The comparative study presented in this paper demonstrates that PLE is an alternative suitable extraction method for 4-nonylphenol and 4-nonylphenol ethoxylate determination in sediments. (C) 2001 Elsevier Science B.V. All rights reserved.
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