PMID- 24050668
OWN - NLM
STAT- MEDLINE
DCOM- 20140402
LR  - 20191210
IS  - 1873-4324 (Electronic)
IS  - 0003-2670 (Linking)
VI  - 797
DP  - 2013 Oct 3
TI  - Development of hyperbranched polymers with non-covalent interactions for 
      extraction and determination of aflatoxins in cereal samples.
PG  - 40-9
LID - S0003-2670(13)01112-4 [pii]
LID - 10.1016/j.aca.2013.08.020 [doi]
AB  - A novel approach for assembling homogeneous hyperbranched polymers based on 
      non-covalent interactions with aflatoxins was developed; the polymers were used 
      to evaluate the extraction of aflatoxins B1, B2, G1 and G2 (AFB1, AFB2, AFG1 and 
      AFG2) in simulant solutions. The results showed that the extraction efficiencies 
      of three kinds of synthesized polymers for the investigated analytes were not 
      statistically different; as a consequence, one of the representative polymers 
      (polymer I) was used as the solid-phase extraction (SPE) sorbent to evaluate the 
      influences of various parameters, such as desorption conditions, pH, ionic 
      strength, concentration of methanol in sample solutions, and the mass of the 
      sorbent on the extraction efficiency. In addition, the extraction efficiencies 
      for these aflatoxins were compared between the investigated polymer and the 
      traditional sorbent C18. The results showed that the investigated polymer had 
      superior extraction efficiencies. Subsequently, the proposed polymer for the SPE 
      packing material was employed to enrich and analyze four aflatoxins in the cereal 
      powder samples. The limits of detection (LODs) at a signal-to-noise (S/N) ratio 
      of 3 were in the range of 0.012-0.120 ng g(-1) for four aflatoxins, and the 
      limits of quantification (LOQs) calculated at S/N=10 were from 0.04 to 0.40 ng 
      g(-1) for four aflatoxins. The recoveries of four aflatoxins from cereal powder 
      samples were in the range of 82.7-103% with relative standard deviations (RSDs) 
      lower than 10%. The results demonstrate the suitability of the SPE approach for 
      the analysis of trace aflatoxins in cereal powder samples.
CI  - Copyright (c) 2013 Elsevier B.V. All rights reserved.
FAU - Liu, Xiaoyan
AU  - Liu X
AD  - State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 
      730000, China.
FAU - Li, Huihui
AU  - Li H
FAU - Xu, Zhigang
AU  - Xu Z
FAU - Peng, Jialin
AU  - Peng J
FAU - Zhu, Shuqiang
AU  - Zhu S
FAU - Zhang, Haixia
AU  - Zhang H
LA  - eng
PT  - Evaluation Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20130820
PL  - Netherlands
TA  - Anal Chim Acta
JT  - Analytica chimica acta
JID - 0370534
RN  - 0 (Aflatoxins)
RN  - 0 (Polymers)
SB  - IM
MH  - Aflatoxins/*isolation & purification
MH  - Edible Grain/chemistry/*microbiology
MH  - Food Contamination/*analysis
MH  - Limit of Detection
MH  - Polymers/*chemistry
MH  - Solid Phase Extraction/*methods
OTO - NOTNLM
OT  - Aflatoxins
OT  - Hyperbranched polymer
OT  - Non-covalent interactions
OT  - Solid-phase extraction
EDAT- 2013/09/21 06:00
MHDA- 2014/04/03 06:00
CRDT- 2013/09/21 06:00
PHST- 2013/06/24 00:00 [received]
PHST- 2013/08/06 00:00 [revised]
PHST- 2013/08/12 00:00 [accepted]
PHST- 2013/09/21 06:00 [entrez]
PHST- 2013/09/21 06:00 [pubmed]
PHST- 2014/04/03 06:00 [medline]
AID - S0003-2670(13)01112-4 [pii]
AID - 10.1016/j.aca.2013.08.020 [doi]
PST - ppublish
SO  - Anal Chim Acta. 2013 Oct 3;797:40-9. doi: 10.1016/j.aca.2013.08.020. Epub 2013 
      Aug 20.