Journal
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
Volume 93, Issue 15, Pages 1566-1584Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/03067319.2013.803282
Keywords
energy crop pesticides; plants; QuEChERS; runoff water; soil; SPE
Categories
Funding
- European Union (European Social Fund - ESF)
- Greek national funds through the Operational Program 'Education and Lifelong Learning' of the National Strategic Reference Framework (NSRF) - Research Funding Program: ARCHIMEDES III
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QuEChERS and solid phase extraction (SPE) methods were applied for determining four herbicides (metazachlor, oxyfluorfen, quizalofop-p-ethyl, quinmerac) and one insecticide ((+/-)-cypermethrin) in runoff water, soil, sunflower and oilseed rape plant matrices. Determination was performed using gas chromatography mass spectrometry (GC-MS), whereas high-pressure liquid chromatography mass spectrometry (HPLC-MS) was used for quinmerac. In all substrates linearity was evaluated using matrix-matched calibration samples at five concentration levels (50-1000ngL(-1) for water, 5-500g kg(-1) for soil and 2.5-500g kg(-1) for sunflower or oilseed rape plant). Correlation coefficient was higher than 0.992 for all pesticides in all substrates. Acceptable mean recovery values were obtained for all pesticides in water (65.4-108.8%), soil (70.0-110.0%) and plant (66.1-118.6%), with intra- and inter-day RSD% below 20%. LODs were in the range of 0.250-26.6ngL(-1) for water, 0.10-1.8g kg(-1) for soil and 0.15-2.0g kg(-1) for plants. The methods can be efficiently applied for field dissipation studies of the pesticides in energy crop cultivations.
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