PMID- 21898797
OWN - NLM
STAT- MEDLINE
DCOM- 20120112
LR  - 20131121
IS  - 1615-9314 (Electronic)
IS  - 1615-9306 (Linking)
VI  - 34
IP  - 18
DP  - 2011 Sep
TI  - Focused ultrasound solid-liquid extraction and selective pressurised liquid 
      extraction to determine bisphenol A and alkylphenols in sewage sludge by gas 
      chromatography-mass spectrometry.
PG  - 2513-22
LID - 10.1002/jssc.201100159 [doi]
AB  - A new method for determining endocrine disrupter compounds (EDCs) in sewage 
      sludge is described in this paper. EDCs studied were bisphenol A (BPA) and 
      alkylphenols (APs). In order to obtain a fast and simple method, selective 
      pressurised liquid extraction (SPLE) and focused ultrasound solid-liquid 
      extraction (FUSLE) were tested. Best results for SPLE were obtained using 
      Florisil as clean-up sorbent and dichloromethane as extraction solvent, while 
      temperature was the only significant variable. Analyte extraction by SPLE was 
      completed in only one extraction cycle of 1 min at 130  degrees C. FUSLE was carried out 
      in one step of 20 s at 75% power (0.5 cycles) and with 8 mL of ethyl acetate. 
      Although the optimised FUSLE process was faster, simpler and cheaper, SPLE 
      provided higher recovery values (ranging from 81 to 105%) and therefore 
      SPLE-based method was selected and validated. The SPLE and GC-MS method showed an 
      LOD of 10.7 ng/g for BPA and LODs between 1.2 and 41.6 ng/g for APs. Relative 
      standard deviation values lower than 6% were obtained for all analytes. As a 
      result, an efficient, fast and simple method based on SPLE and GC-MS for the 
      determination of BPA and APs in sewage sludge is proposed.
CI  - Copyright (c) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
FAU - Martinez-Moral, Maria P
AU  - Martinez-Moral MP
AD  - Department of Chemistry, University of La Rioja, Logrono, La Rioja, Spain.
FAU - Tena, Maria T
AU  - Tena MT
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20110823
PL  - Germany
TA  - J Sep Sci
JT  - Journal of separation science
JID - 101088554
RN  - 0 (Benzhydryl Compounds)
RN  - 0 (Phenols)
RN  - MLT3645I99 (bisphenol A)
SB  - IM
MH  - Benzhydryl Compounds
MH  - Chemical Fractionation/*methods
MH  - Gas Chromatography-Mass Spectrometry
MH  - Phenols/*analysis
MH  - *Ultrasonics
EDAT- 2011/09/08 06:00
MHDA- 2012/01/13 06:00
CRDT- 2011/09/08 06:00
PHST- 2011/02/25 00:00 [received]
PHST- 2011/06/14 00:00 [revised]
PHST- 2011/06/15 00:00 [accepted]
PHST- 2011/09/08 06:00 [entrez]
PHST- 2011/09/08 06:00 [pubmed]
PHST- 2012/01/13 06:00 [medline]
AID - 10.1002/jssc.201100159 [doi]
PST - ppublish
SO  - J Sep Sci. 2011 Sep;34(18):2513-22. doi: 10.1002/jssc.201100159. Epub 2011 Aug 
      23.