The applied methods were not suitable for the extraction of tet-ramethrin, formothion, pyrazophos and primicarb. Tetramethrin, formothion and pyrazophos showed very low recoveries with the mentioned methods while primicarb was not recovered at all.
The applied methods were not suitable for the extraction of tet-ramethrin, formothion, pyrazophos and primicarb. Tetramethrin, formothion and pyrazophos showed very low recoveries with thementioned methods while primicarb was not recovered at all.