PMID- 27378220
OWN - NLM
STAT- MEDLINE
DCOM- 20170413
LR  - 20181202
IS  - 1614-7499 (Electronic)
IS  - 0944-1344 (Linking)
VI  - 23
IP  - 19
DP  - 2016 Oct
TI  - Determination of organophosphorus pesticides and their major degradation product 
      residues in food samples by HPLC-UV.
PG  - 19409-16
LID - 10.1007/s11356-016-7071-9 [doi]
AB  - A simple method based on dispersive solid-phase extraction (DSPE) and dispersive 
      liquid-liquid microextraction method based on solidification of floating organic 
      droplets (DLLME-SFO) was developed for the extraction of chlorpyrifos (CP), 
      chlorpyrifos-methyl (CPM), and their main degradation product 
      3,5,6-trichloro-2-pyridinol (TCP) in tomato and cucumber samples. The 
      determination was carried out by high performance liquid chromatography with 
      ultraviolet detection (HPLC-UV). In the DSPE-DLLME-SFO, the analytes were first 
      extracted with acetone. The clean-up of the extract by DSPE was carried out by 
      directly adding activated carbon sorbent into the extract solution, followed by 
      shaking and filtration. Under the optimum conditions, the proposed method was 
      sensitive and showed a good linearity within a range of 2-500 ng/g, with the 
      correlation coefficients (r) varying from 0.9991 to 0.9996. The enrichment 
      factors ranged from 127 to 138. The limit of detections (LODs) were in the range 
      of 0.12-0.68 ng/g, and the relative standard deviations (RSDs) for 50 ng/g of 
      each analytes in tomato samples were in the range of 3.25-6.26 % (n = 5). The 
      proposed method was successfully applied for the extraction and determination of 
      the mentioned analytes residues in tomato and cucumber samples, and satisfactory 
      results were obtained.
FAU - Peng, Guilong
AU  - Peng G
AD  - Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of 
      Education, Chongqing University, Chongqing, 400045, China.
AD  - Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and 
      Instrumentation, Tsinghua University, Beijing, 100084, China.
FAU - He, Qiang
AU  - He Q
AD  - Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of 
      Education, Chongqing University, Chongqing, 400045, China. heqiang0980@163.com.
FAU - Lu, Ying
AU  - Lu Y
AD  - Mathematics and Physics, Armed Police College, Chengdu, 610213, China.
FAU - Mmereki, Daniel
AU  - Mmereki D
AD  - Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of 
      Education, Chongqing University, Chongqing, 400045, China.
FAU - Zhong, Zhihui
AU  - Zhong Z
AD  - Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and 
      Instrumentation, Tsinghua University, Beijing, 100084, China.
LA  - eng
PT  - Journal Article
DEP - 20160705
PL  - Germany
TA  - Environ Sci Pollut Res Int
JT  - Environmental science and pollution research international
JID - 9441769
RN  - 0 (Organophosphorus Compounds)
RN  - 0 (Pesticide Residues)
RN  - 0 (Pesticides)
RN  - 0 (Solutions)
RN  - JCS58I644W (Chlorpyrifos)
RN  - O49S38267J (chlorpyrifos-methyl)
SB  - IM
MH  - Chlorpyrifos/analogs & derivatives
MH  - Chromatography, High Pressure Liquid/methods
MH  - Food Analysis
MH  - Food Contamination
MH  - Limit of Detection
MH  - Liquid Phase Microextraction/methods
MH  - Organophosphorus Compounds/*analysis
MH  - Pesticide Residues/*analysis
MH  - Pesticides/*analysis
MH  - Solid Phase Extraction/methods
MH  - Solutions
OTO - NOTNLM
OT  - Activated carbon
OT  - CP
OT  - CPM
OT  - DLLME-SFO
OT  - DSPE
OT  - TCP
EDAT- 2016/07/06 06:00
MHDA- 2017/04/14 06:00
CRDT- 2016/07/06 06:00
PHST- 2015/10/28 00:00 [received]
PHST- 2016/06/13 00:00 [accepted]
PHST- 2016/07/06 06:00 [entrez]
PHST- 2016/07/06 06:00 [pubmed]
PHST- 2017/04/14 06:00 [medline]
AID - 10.1007/s11356-016-7071-9 [pii]
AID - 10.1007/s11356-016-7071-9 [doi]
PST - ppublish
SO  - Environ Sci Pollut Res Int. 2016 Oct;23(19):19409-16. doi: 
      10.1007/s11356-016-7071-9. Epub 2016 Jul 5.