PMID- 24297525
OWN - NLM
STAT- MEDLINE
DCOM- 20150702
LR  - 20151119
IS  - 1945-239X (Electronic)
IS  - 0021-9665 (Linking)
VI  - 52
IP  - 10
DP  - 2014 Nov-Dec
TI  - Determination of parabens in beverage samples by dispersive liquid-liquid 
      microextraction based on solidification of floating organic droplet.
PG  - 1332-8
LID - 10.1093/chromsci/bmt175 [doi]
AB  - A simple and efficient method for dispersive liquid-liquid microextraction of 
      methylparaben, ethylparaben, propylparaben and butylparaben in real beverage 
      samples was developed. It is making use of solidified floating organic droplets 
      of 1-dodecanol which has low density and a proper melting point. Parameters 
      influencing the extraction efficiency, such as the type of extraction and 
      dispersive solvent, the volume of extraction and dispersive solvent, salt effect, 
      pH, extraction time, were optimized and resulted in enrichment factors (EFs) of 
      84 for methylparaben, 103 for ethylparaben, 115 for propylparaben and 126 for 
      butylparaben. The limits of detection for parabens were 1.52, 1.06, 0.32 and 0.17 
      ng/mL, respectively. Excellent linearity with coefficients of correlation from 
      0.9970 to 0.9997 was observed in the concentration range of 5-1,000 ng/mL. The 
      repeatability of the proposed method expressed as relative standard deviations 
      (RSDs) ranged from 2.54 to 3.89% (n = 5). The relative recoveries for parabens in 
      beverage samples were good and in the ranges of 89.8-109.9, 90.2-107.3, 
      90.9-101.7 and 92.3-118.1%, respectively. Thus, the proposed method has excellent 
      potential for the determination of parabens in beverage samples.
CI  - (c) The Author [2013]. Published by Oxford University Press. All rights reserved. 
      For Permissions, please email: journals.permissions@oup.com.
FAU - Hou, Fang
AU  - Hou F
AD  - School of Chemistry and Chemical Engineering, Central South University, Changsha 
      410083, China.
FAU - Deng, Xiaoying
AU  - Deng X
AD  - School of Chemistry and Chemical Engineering, Central South University, Changsha 
      410083, China.
FAU - Jiang, Xinyu
AU  - Jiang X
AD  - School of Chemistry and Chemical Engineering, Central South University, Changsha 
      410083, China Key Laboratory of Resources Chemistry of Nonferrous Metals, 
      Ministry of Education (Central South University), Changsha 410083, China 
      jiangxinyu@csu.edu.cn yujg@csu.edu.cn.
FAU - Yu, Jingang
AU  - Yu J
AD  - School of Chemistry and Chemical Engineering, Central South University, Changsha 
      410083, China jiangxinyu@csu.edu.cn yujg@csu.edu.cn.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20131201
PL  - United States
TA  - J Chromatogr Sci
JT  - Journal of chromatographic science
JID - 0173225
RN  - 0 (Parabens)
RN  - 451W47IQ8X (Sodium Chloride)
SB  - IM
MH  - Beverages/*analysis
MH  - Chromatography, Liquid/methods
MH  - Hydrogen-Ion Concentration
MH  - Limit of Detection
MH  - Linear Models
MH  - Liquid Phase Microextraction/*methods
MH  - Parabens/*analysis/chemistry/isolation & purification
MH  - Reproducibility of Results
MH  - Sodium Chloride
EDAT- 2013/12/04 06:00
MHDA- 2015/07/03 06:00
CRDT- 2013/12/04 06:00
PHST- 2013/12/04 06:00 [entrez]
PHST- 2013/12/04 06:00 [pubmed]
PHST- 2015/07/03 06:00 [medline]
AID - bmt175 [pii]
AID - 10.1093/chromsci/bmt175 [doi]
PST - ppublish
SO  - J Chromatogr Sci. 2014 Nov-Dec;52(10):1332-8. doi: 10.1093/chromsci/bmt175. Epub 
      2013 Dec 1.