PMID- 20580368
OWN - NLM
STAT- MEDLINE
DCOM- 20100917
LR  - 20100712
IS  - 1873-3778 (Electronic)
IS  - 0021-9673 (Linking)
VI  - 1217
IP  - 31
DP  - 2010 Jul 30
TI  - Comparison of two extraction methods for the analysis of per- and polyfluorinated 
      chemicals in digested sewage sludge.
PG  - 5026-34
LID - 10.1016/j.chroma.2010.05.061 [doi]
AB  - A rapid and reliable analytical method, based on ion-pair extraction, clean-up on 
      Envicarb cartridge and detection by liquid chromatography-tandem mass 
      spectrometry (LC-MS/MS), was developed for determination of 17 per- and 
      polyfluorinated chemicals (PFCs) in digested sewage sludge. Envicarb cartridge 
      and six labeled internal standards were selected for the elimination/reduction 
      and correction of matrix effects, respectively. As a result, the matrix effect 
      for perfluorooctane sulfonamides (FOSAs) and perfluorocarboxylic acids (PFCAs) 
      with carbon chain length from C6 to C14 was lowered to a range of -14% to +28%. 
      However, the matrix effect for other analytes was still great mainly due to the 
      absence of appropriate internal standard. Mean recoveries of the target analytes 
      based on matrix spikes, at different spike levels (10-300ng/g), ranged from 70% 
      to 169%. Relative standard deviations (RSDs) were in the range of 2-20% at 
      different spike levels. The limit of quantification (LOQ) ranged between 0.6 and 
      30ng/g. The method was successfully applied to several sewage sludge samples from 
      wastewater treatment plants nearby Zurich, Switzerland. In addition, by comparing 
      the accuracy and precision of ion-pair extraction method and methanol extraction 
      method, we further demonstrated that the ion-pair extraction method can be used 
      for the analysis of PFCs in sludge samples. To our knowledge, this is the first 
      study to extract the PFCs in sewage sludge with ion-pair method and to find 
      unsaturated fluorotelomer carboxylic acids (FTUCAs) in sewage sludge.
FAU - Zhang, Tao
AU  - Zhang T
AD  - MOE Key Laboratory of Pollution Processes and Environmental Criteria, Nankai 
      University, Tianjin 300071, China.
FAU - Sun, Hongwen
AU  - Sun H
FAU - Gerecke, Andreas C
AU  - Gerecke AC
FAU - Kannan, Kurunthachalam
AU  - Kannan K
FAU - Muller, Claudia E
AU  - Muller CE
FAU - Alder, Alfredo C
AU  - Alder AC
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20100604
PL  - Netherlands
TA  - J Chromatogr A
JT  - Journal of chromatography. A
JID - 9318488
RN  - 0 (Hydrocarbons, Fluorinated)
RN  - 0 (Sewage)
SB  - IM
MH  - Chemical Fractionation/instrumentation/*methods
MH  - Chromatography, Liquid
MH  - Hydrocarbons, Fluorinated/*analysis
MH  - Sewage/*chemistry
MH  - Tandem Mass Spectrometry
EDAT- 2010/06/29 06:00
MHDA- 2010/09/21 06:00
CRDT- 2010/06/29 06:00
PHST- 2010/03/18 00:00 [received]
PHST- 2010/05/14 00:00 [revised]
PHST- 2010/05/28 00:00 [accepted]
PHST- 2010/06/29 06:00 [entrez]
PHST- 2010/06/29 06:00 [pubmed]
PHST- 2010/09/21 06:00 [medline]
AID - S0021-9673(10)00733-8 [pii]
AID - 10.1016/j.chroma.2010.05.061 [doi]
PST - ppublish
SO  - J Chromatogr A. 2010 Jul 30;1217(31):5026-34. doi: 10.1016/j.chroma.2010.05.061. 
      Epub 2010 Jun 4.