PMID- 21376992
OWN - NLM
STAT- MEDLINE
DCOM- 20110620
LR  - 20110307
IS  - 1873-3573 (Electronic)
IS  - 0039-9140 (Linking)
VI  - 84
IP  - 2
DP  - 2011 Apr 15
TI  - Determination of linear alkylbenzene sulfonates by ion-pair solid-phase 
      extraction and high-performance liquid chromatography.
PG  - 587-92
LID - 10.1016/j.talanta.2011.01.014 [doi]
AB  - In this paper, the potential use of multiwalled carbon nanotubes (MWCNTs) as 
      solid phase extraction (SPE) adsorbent was evaluated for preconcentration of 
      linear alkylbenzene sulfonates (LAS) using ion-pair (IP)-SPE with 
      tetrabutylammonium hydroxide (TBAH). The LAS homologues present in the aqueous 
      sample were ion-paired with TBAH and the solution was passed through the MWCNT 
      cartridges. The analytes retained in the cartridge were eluted with methanol and 
      the concentrated methanol extract was analysed by HPLC-UV. In order to obtain the 
      satisfactory recovery of LAS homologues, various parameters including the type 
      and amount of the ion-pair reagents, the desorption and enrichment conditions 
      such as the effect of eluent and its volume, pH, the flow rate, the ultrasonic 
      time of sample, and the volume of sample solution were systematically optimized. 
      Under the optimal conditions, LAS homologues could be easily extracted by the 
      proposed SPE cartridge. The favorable limits of detection (LOD) for LAS 
      homologues were in the range from 0.02 to 0.03 mug L(-1), and the relative 
      standard deviations (RSDs) were 1.55-2.54% for 10 mug L(-1) LAS (n=6). The 
      proposed method has been successfully applied for the analysis of LAS homologues 
      in aqueous environmental samples. A comparison study with ion-pair solid 
      extraction on MWCNTs, C8 and C18 as adsorbents for LAS demonstrated that ion 
      pair-based solid extraction on MWCNTs adsorbent was advantageous over C8 and C18, 
      the widely used traditional adsorbents.
CI  - Copyright (c) 2011 Elsevier B.V. All rights reserved.
FAU - Guo, Ping
AU  - Guo P
AD  - The Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry 
      of Education), College of Chemistry and Chemical Engineering, Southwest 
      University; Chongqing 400715, China.
FAU - Guan, Zhuo
AU  - Guan Z
FAU - Wang, Weidong
AU  - Wang W
FAU - Chen, Bo
AU  - Chen B
FAU - Huang, Yuming
AU  - Huang Y
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20110115
PL  - Netherlands
TA  - Talanta
JT  - Talanta
JID - 2984816R
RN  - 0 (Alkanesulfonic Acids)
RN  - 0 (alkylbenzyl sulfonic acid)
SB  - IM
MH  - Alkanesulfonic Acids/*analysis
MH  - Chromatography, High Pressure Liquid/*methods
MH  - Limit of Detection
MH  - Solid Phase Extraction/*methods
MH  - Spectrophotometry, Ultraviolet
EDAT- 2011/03/08 06:00
MHDA- 2011/06/21 06:00
CRDT- 2011/03/08 06:00
PHST- 2010/10/15 00:00 [received]
PHST- 2010/12/21 00:00 [revised]
PHST- 2011/01/06 00:00 [accepted]
PHST- 2011/03/08 06:00 [entrez]
PHST- 2011/03/08 06:00 [pubmed]
PHST- 2011/06/21 06:00 [medline]
AID - S0039-9140(11)00046-4 [pii]
AID - 10.1016/j.talanta.2011.01.014 [doi]
PST - ppublish
SO  - Talanta. 2011 Apr 15;84(2):587-92. doi: 10.1016/j.talanta.2011.01.014. Epub 2011 
      Jan 15.