Chemistry Reference
In-Depth Information
were optimized to provide the best possible sensitivity by infusion. Corona voltage, was
studied in the range from 3.5 V to 5 V and cone voltage studied in the range from 25 V to 35
V.
Figure 5.
Mass of triazoles after tuning; (308.1), Fenbuconazole (337.1), Hexaconazole (314.1),
Propiconazole (342.1), Triadimenol (296.1), Cyproconazole (292.1), Myclobutanil (289.1), Triadimefon
(294.1) and Difenoconazole (406.2).
3.3. Sample preparation and extraction
3.3.1. Sample preparation
The analysis is performed on a subsample of the laboratory sample, after appropriate
comminution. This is to ensure the sub-sample is representative of the original laboratory
samples.
In this study, 1-2 kg laboratory samples; cabbage, carrot, tomato and orange were used as
representative samples. The laboratory samples were processed in a large chopper (Robot
Coupe R5 V.V) and were blended to a consistent texture. Then 200g of the comminuted
samples was transferred to another container and homogenized with the OMNI mixer
homogenizer until homogeneous. This step is taken so that the 30 g samples taken for
extraction are highly representative of the initial sample. Well comminuted samples can
improve the shaking based extraction and less time is spent on the overall homogenization
