Electrochemical Behavior and Analysis of Cyphenothrin in Formulations and Grain Samples
نویسندگان
چکیده
A sensitive method for the determination of pyrethorid cyphenothrin by differential pulse adsorptive stripping voltammetry at a hanging mercury drop electrode (HMDE)(pH6.0) was described. The cyclic voltagramms demonstrate the adsorption of these compounds at the mercury electrode. A symmetric study of the various operational parameters that affect the stripping response was carried out by the differential pulse voltammetry. With an accumulation potential of -0.6V and 60 s an accumulation time, the limit of detection was 2.45x10 -8 mol/L to 1.5x10 -8 mol/L, the relative standard deviation (n=10) correlation coefficient values 0.995, 1.1% respectively. Finally the proposed method was applied for determination of the cyphenothrin in storage bags of wheat and rice under FCI’s storage system.
منابع مشابه
A Corrosion Study of Grain-Refined 304L Stainless Steels Produced by the Martensitic Process
AISI 304L austenitic stainless steel with different grain sizes of 0.5 -12 μm was obtained through the martensitic process. Corrosion behavior of different samples was investigated in a 0.5M HCl solution using open circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopy tests. Also, the correlation between the grain size and pitting corrosion resistance was as...
متن کاملOn the effect of grain size on rock behavior under cyclic loading by distinct element method
It is well-known that the mechanical behavior of rocks under cyclic loading is much different from static loading conditions. In most constructions, the load applied to structures is within dynamic ranges. That’s why a great deal of attention has been paid towards this field in order to identify the dynamic behavior of rocks in more details. Nevertheless, the nature of dynamic failure in rocks ...
متن کاملCorrosion Behavior of Al-2wt%Cu Alloy Processed By Accumulative Roll Bonding (ARB) Process
Accumulative roll bonding (ARB) imposes severe plastic strain on materials without changing the specimen dimensions. ARB process is mostly appropriate for practical applications because it can be performed readily by the conventional rolling process. An Al-2wt%Cu alloy was subjected to ARB process up to a strain of 4.8. Stacking of materials and conventional roll-bonding are repeated in the pro...
متن کاملCorrosion Inhibition of Sodium Phosphate for Coarse and Near Ultrafined-Grain Mild steel surface
An ultrafine grain surface layer with average crystallite size of 28 nm was produced on annealed mild steel through a wire brushing process. The effects of grain size reduction on the inhibition performance of sodium phosphate were investigated using polarization and electrochemical impedance spectroscopy (EIS) measurements. The crystal grain size of wire brushed surface was analyzed by X-ray d...
متن کاملThe effect of saccharin on microstructure and corrosion behavior of nanocrystalline nickel thin films in alkaline solution
In this study the effect of crystallite size reduction and microstructure on the electrochemical corrosion behavior of nanocrystalline nickel (NC Ni) were investigated using Tafel polarization and electrochemical impedance spectroscopy (EIS) measurements in 10 wt.% NaOH. NC Ni coatings were produced by direct current electrodeposition using chloride baths in presence and absence of saccharin as...
متن کامل