PMID- 22440664
OWN - NLM
STAT- MEDLINE
DCOM- 20120521
LR  - 20191210
IS  - 1873-3778 (Electronic)
IS  - 0021-9673 (Linking)
VI  - 1235
DP  - 2012 Apr 27
TI  - Rapid analysis of organochlorine and pyrethroid pesticides in tea samples by 
      directly suspended droplet microextraction using a gas chromatography-electron 
      capture detector.
PG  - 166-73
LID - 10.1016/j.chroma.2012.02.070 [doi]
AB  - A simple and efficient directly suspended droplet microextraction (DSDME) has 
      been developed to extract and pre-concentrate organochlorine and pyrethrin 
      pesticides from tea samples prior to analysis by a gas chromatography-electron 
      capture detector (GC-ECD). The optimal experimental conditions of DSDME were: 100 
      muL isooctane exposed for 15 min to 5 mL of the tea aqueous sample stirred at 1100 
      rpm. For most of the target analytes, the optimal pretreatment of DSDME processes 
      led to no significant interference of tea matrices. The approach was applied to 
      the determination of organochlorine and pyrethroid pesticides in tea samples, 
      with a linearity range of 0.0005-2 mug/mL. The relative recoveries of all the 
      pesticides ranged between 80.0% and 120.8% with relative standard deviations 
      (RSDs) in the range of 0.8-19.9% (n=5). The limits of detections (LODs) ranged 
      between 0.04 and 1 mug/L for all the target pesticides.
CI  - Copyright (c) 2012 Elsevier B.V. All rights reserved.
FAU - Liu, Dan
AU  - Liu D
AD  - Department of Applied Chemistry, College of Science, China Agricultural 
      University, Beijing 100193, China.
FAU - Min, Shungeng
AU  - Min S
LA  - eng
PT  - Evaluation Study
PT  - Journal Article
DEP - 20120305
PL  - Netherlands
TA  - J Chromatogr A
JT  - Journal of chromatography. A
JID - 9318488
RN  - 0 (Hydrocarbons, Chlorinated)
RN  - 0 (Pesticides)
RN  - 0 (Pyrethrins)
RN  - 0 (Tea)
SB  - IM
MH  - Chromatography, Gas/economics/*methods
MH  - Hydrocarbons, Chlorinated/analysis/*isolation & purification
MH  - Limit of Detection
MH  - Liquid Phase Microextraction/economics/*methods
MH  - Pesticides/analysis/*isolation & purification
MH  - Pyrethrins/analysis/*isolation & purification
MH  - Tea/*chemistry
MH  - Time Factors
EDAT- 2012/03/24 06:00
MHDA- 2012/05/23 06:00
CRDT- 2012/03/24 06:00
PHST- 2012/01/14 00:00 [received]
PHST- 2012/02/24 00:00 [revised]
PHST- 2012/02/28 00:00 [accepted]
PHST- 2012/03/24 06:00 [entrez]
PHST- 2012/03/24 06:00 [pubmed]
PHST- 2012/05/23 06:00 [medline]
AID - S0021-9673(12)00376-7 [pii]
AID - 10.1016/j.chroma.2012.02.070 [doi]
PST - ppublish
SO  - J Chromatogr A. 2012 Apr 27;1235:166-73. doi: 10.1016/j.chroma.2012.02.070. Epub 
      2012 Mar 5.