PMID- 25619730
OWN - NLM
STAT- MEDLINE
DCOM- 20150921
LR  - 20161125
IS  - 1364-5528 (Electronic)
IS  - 0003-2654 (Linking)
VI  - 140
IP  - 5
DP  - 2015 Mar 7
TI  - Coupling carbon nanotube film microextraction with desorption corona beam 
      ionization for rapid analysis of Sudan dyes (I-IV) and Rhodamine B in chilli oil.
PG  - 1731-8
LID - 10.1039/c4an02044h [doi]
AB  - A rapid analysis method by coupling carbon nanotube film (CNTF) microextraction 
      with desorption corona beam ionization (DCBI) was developed for the determination 
      of Sudan dyes (I-IV) and Rhodamine B in chilli oil samples. Typically, CNTF was 
      immersed into the diluted solution of chilli oil for extraction, which was then 
      placed directly under the visible plasma beam tip of the DCBI source for 
      desorption and ionization. Under optimized conditions, five dyes were 
      simultaneously determined using this method. Results showed that the analytes 
      were enriched by the CNTF through the pi-pi interactions, and the proposed method 
      could significantly improve the sensitivities of these compounds, compared to the 
      direct analysis by DCBI-MS/MS. The method with a linear range of 0.08-12.8 mug 
      g(-1) and good linear relationships (R(2) > 0.93) in a multiple reaction 
      monitoring (MRM) mode was developed. Satisfactory reproducibility was achieved. 
      Relative standard deviations (RSDs) were less than 20.0%. The recoveries ranged 
      from 80.0 to 110.0%, and the limits of detection (LODs) were in the range of 
      1.4-21 ng g(-1). Finally, the feasibility of the method was further exhibited by 
      the determination of five illegal dyes in chilli powder. These results 
      demonstrate that the proposed method consumes less time and solvent than 
      conventional HPLC-based methods and avoids the contamination of chromatographic 
      column and ion source from non-volatile oil. With the help of a 72-well shaker, 
      multiple samples could be treated simultaneously, which ensures high throughput 
      for the entire pretreatment process. In conclusion, it provides a rapid and 
      high-throughput approach for the determination of such illicit additions in 
      chilli products.
FAU - Chen, Di
AU  - Chen D
AD  - Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of 
      Education), Department of Chemistry, Wuhan University, Wuhan 430072, China. 
      yqfeng@whu.edu.cn.
FAU - Huang, Yun-Qing
AU  - Huang YQ
FAU - He, Xiao-Mei
AU  - He XM
FAU - Shi, Zhi-Guo
AU  - Shi ZG
FAU - Feng, Yu-Qi
AU  - Feng YQ
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20150126
PL  - England
TA  - Analyst
JT  - The Analyst
JID - 0372652
RN  - 0 (Azo Compounds)
RN  - 0 (Coloring Agents)
RN  - 0 (Food Additives)
RN  - 0 (Nanotubes, Carbon)
RN  - 0 (Plant Oils)
RN  - 8C1M5O3ECT (sudan red)
RN  - ND733RX3JN (sudan III)
SB  - IM
MH  - Azo Compounds/analysis
MH  - Capsicum/*chemistry
MH  - Coloring Agents/*analysis
MH  - Food Additives/*analysis
MH  - Nanotubes, Carbon/*chemistry
MH  - Plant Oils/*analysis
MH  - Solid Phase Microextraction/*methods
MH  - Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization/*methods
EDAT- 2015/01/27 06:00
MHDA- 2015/09/22 06:00
CRDT- 2015/01/27 06:00
PHST- 2015/01/27 06:00 [entrez]
PHST- 2015/01/27 06:00 [pubmed]
PHST- 2015/09/22 06:00 [medline]
AID - 10.1039/c4an02044h [doi]
PST - ppublish
SO  - Analyst. 2015 Mar 7;140(5):1731-8. doi: 10.1039/c4an02044h. Epub 2015 Jan 26.