PMID- 24681764
OWN - NLM
STAT- MEDLINE
DCOM- 20150702
LR  - 20191210
IS  - 1364-5528 (Electronic)
IS  - 0003-2654 (Linking)
VI  - 139
IP  - 10
DP  - 2014 May 21
TI  - Preparation of an aminopropyl imidazole-modified silica gel as a sorbent for 
      solid-phase extraction of carboxylic acid compounds and polycyclic aromatic 
      hydrocarbons.
PG  - 2531-7
LID - 10.1039/c4an00039k [doi]
AB  - In this paper, a kind of aminopropyl imidazole-modified silica sorbent was 
      synthesized and used as a solid-phase extraction (SPE) sorbent for the 
      determination of carboxylic acid compounds and polycyclic aromatic hydrocarbons 
      (PAHs). The resultant aminopropyl imidazole-modified silica sorbent was 
      characterized by Fourier transform infrared spectroscopy (FT-IR) and elemental 
      analysis (EA) to ensure the successful binding of aminopropyl imidazole on the 
      surface of silica gel. Then the aminopropyl imidazole-modified silica sorbent 
      served as a SPE sorbent for the enrichment of carboxylic acid compounds and PAHs. 
      The new sorbent exhibited high extraction efficiency towards the tested compounds 
      and the results show that such a sorbent can offer multiple intermolecular 
      interactions: electrostatic, pi-pi, and hydrophobic interactions. Several 
      parameters affecting the extraction recovery, such as the pH of sample solution, 
      the pH of eluent, the solubility of eluent, the volume of eluent, and sample 
      loading, were also investigated. Under the optimized conditions, the proposed 
      method was applied to the analysis of four carboxylic acid compounds and four 
      PAHs in environmental water samples. Good linearities were obtained for all the 
      tested compounds with R(2) larger than 0.9903. The limits of detection were found 
      to be in the range of 0.0065-0.5 mug L(-1). The recovery values of spiked river 
      water samples were from 63.2% to 112.3% with relative standard deviations (RSDs) 
      less than 10.1% (n = 4).
FAU - Wang, Na
AU  - Wang N
AD  - Key Laboratory of Chemistry of Northwestern Plant Resources, CAS/Key Laboratory 
      for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, 
      Chinese Academy of Sciences, Lanzhou 730000, China. sxjiang@lzb.ac.cn 
      liusj@licp.cas.cn.
FAU - Guo, Yong
AU  - Guo Y
FAU - Wang, Licheng
AU  - Wang L
FAU - Liang, Xiaojing
AU  - Liang X
FAU - Liu, Shujuan
AU  - Liu S
FAU - Jiang, Shengxiang
AU  - Jiang S
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Validation Study
PL  - England
TA  - Analyst
JT  - The Analyst
JID - 0372652
RN  - 0 (Carboxylic Acids)
RN  - 0 (Imidazoles)
RN  - 0 (Polycyclic Aromatic Hydrocarbons)
RN  - 0 (aminopropyl silica gel)
RN  - 7631-86-9 (Silicon Dioxide)
SB  - IM
MH  - Carboxylic Acids/*isolation & purification
MH  - Imidazoles/*chemistry
MH  - Polycyclic Aromatic Hydrocarbons/*isolation & purification
MH  - Silicon Dioxide/*chemistry
MH  - Solid Phase Extraction/*instrumentation
EDAT- 2014/04/01 06:00
MHDA- 2015/07/03 06:00
CRDT- 2014/04/01 06:00
PHST- 2014/04/01 06:00 [entrez]
PHST- 2014/04/01 06:00 [pubmed]
PHST- 2015/07/03 06:00 [medline]
AID - 10.1039/c4an00039k [doi]
PST - ppublish
SO  - Analyst. 2014 May 21;139(10):2531-7. doi: 10.1039/c4an00039k.