>
Fa   |   Ar   |   En
   Spectrophotometric determination of metribuzin herbicide with p-dimethylamino-benzaldehyde using factorial designs for optimization of experimental variables  
   
نویسنده ara b. ,shah j. ,rasul jan m. ,muhammad m.
منبع journal of saudi chemical society - 2016 - دوره : 20 - شماره : Supplement 1 - صفحه:S566 -S572
چکیده    A new simple spectrophotometric method has been developed for the determination of metribuzin herbicide in formulations and potato samples. the method is based on the reaction of p-dimethylamino-benzaldehyde (dmab) with sodium hydroxide via cannizzaro's reaction at 100 °c to form a p-dimethylaminobenzoic acid. the resultant p-dimethylaminobenzoic acid reacted with metribuzin herbicide in acidic media at 100 °c and the yellow colored product was measured at 455 nm. the reaction conditions and other analytical parameters were studied and optimized. a linear plot between absorbance and concentration over the range from 0.2 to 20 μg ml−1 was found with molar absorptivity of 2.1 × 104 l mol−1 cm−1. the limit of detection (lod) and limit of quantification (loq) were found to be 0.05 and 0.2 μg ml−1,respectively. the proposed method has been successfully applied for the analysis of commercial formulation and potato sample. the recoveries of the method were found to be in the range from 92.16 ± 0.06% to 96.66 ± 0.18%. two level factorial designs of 23 and 22 were used to optimize all parameters,determine the influence of different parameters and their interactions on the final product formation. © 2013
کلیدواژه Cannizzaro's reaction; Metribuzin; p-Dimethylamino-benzaldehyde; Spectrophotometric
آدرس institute of chemical sciences,university of peshawar,pakistan,department of chemistry, Pakistan, institute of chemical sciences, Pakistan, institute of chemical sciences, Pakistan, institute of chemical sciences,university of peshawar,pakistan,department of chemistry, Pakistan
 
     
   
Authors
  
 
 

Copyright 2023
Islamic World Science Citation Center
All Rights Reserved