PMID- 22954676
OWN - NLM
STAT- MEDLINE
DCOM- 20130508
LR  - 20181202
IS  - 1090-2414 (Electronic)
IS  - 0147-6513 (Linking)
VI  - 85
DP  - 2012 Nov
TI  - Determination of mepiquat chloride in cotton crops and soil and its dissipation 
      rates.
PG  - 137-43
LID - S0147-6513(12)00275-8 [pii]
LID - 10.1016/j.ecoenv.2012.08.015 [doi]
AB  - A simple, accurate and highly sensitive analytical method was developed in this 
      study for determining the residues and dissipation dynamics of mepiquat chloride 
      in soil and cotton crops (including plant and seed). The samples in this method 
      were directly extracted with methanol-ammonium acetate solution and followed by 
      analysis of high performance liquid chromatography tandem mass spectrometry 
      (HPLC-MS/MS). The intra-day and inter-day recoveries of mepiquat chloride were in 
      the range of 76.58-98.87 percent and 73.48-104.7 percent with relative standard 
      deviations (RSDs) of 0.89-5.04 percent and 3.84-10.7 percent, respectively. The 
      limit of quantification (LOQ) was 0.05mgkg(-1) for soil and 0.1mgkg(-1) for 
      cotton plant and seed. The half-life of mepiquat chloride in cotton plants and in 
      soil was 2.51-3.85 days and 7.56-10.50 days, respectively. The final residues of 
      mepiquat chloride in all cotton seeds were below the MRLs of EU (5mgkg(-1)), 
      Japan and America (2mgkg(-1)) over 14 days after the last spraying, and were 
      below 1mgkg(-1) (the MRLs set by Argentina and Australia) over 21 days after the 
      last spraying at recommended dosage. The final residues in soil were below the 
      LOD (0.01mgkg(-1)) over 21 days after the last spraying.
CI  - Copyright (c) 2012 Elsevier Inc. All rights reserved.
FAU - Li, Wen-Xi
AU  - Li WX
AD  - College of Science, China Agricultural University, Beijing 100193, China. 
      lotus0926@qq.com
FAU - Chen, Miao
AU  - Chen M
FAU - Chen, Wei-Tao
AU  - Chen WT
FAU - Qiao, Cheng-Kui
AU  - Qiao CK
FAU - Li, Ming-Hui
AU  - Li MH
FAU - Han, Li-Jun
AU  - Han LJ
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20120903
PL  - Netherlands
TA  - Ecotoxicol Environ Saf
JT  - Ecotoxicology and environmental safety
JID - 7805381
RN  - 0 (Piperidines)
RN  - 0 (Plant Growth Regulators)
RN  - 0 (Soil)
RN  - 0 (Soil Pollutants)
RN  - S2SFZ0Z4TW (mepiquat)
SB  - IM
MH  - Chromatography, High Pressure Liquid/methods
MH  - Gossypium/*metabolism
MH  - Half-Life
MH  - Limit of Detection
MH  - Piperidines/*chemistry
MH  - Plant Growth Regulators/*chemistry
MH  - Soil/*analysis
MH  - Soil Pollutants/*chemistry
MH  - Tandem Mass Spectrometry/methods
EDAT- 2012/09/08 06:00
MHDA- 2013/05/09 06:00
CRDT- 2012/09/08 06:00
PHST- 2012/03/28 00:00 [received]
PHST- 2012/08/04 00:00 [revised]
PHST- 2012/08/07 00:00 [accepted]
PHST- 2012/09/08 06:00 [entrez]
PHST- 2012/09/08 06:00 [pubmed]
PHST- 2013/05/09 06:00 [medline]
AID - S0147-6513(12)00275-8 [pii]
AID - 10.1016/j.ecoenv.2012.08.015 [doi]
PST - ppublish
SO  - Ecotoxicol Environ Saf. 2012 Nov;85:137-43. doi: 10.1016/j.ecoenv.2012.08.015. 
      Epub 2012 Sep 3.