Graphene oxide magnetic nanocomposites for the preconcentration of trace amounts of malachite green from fish and water samples prior to determination by fiber optic-linear array detection spectrophotometry

2014 ◽  
Vol 6 (19) ◽  
pp. 7744-7751 ◽  
Author(s):  
Armin Sergi ◽  
Farzaneh Shemirani ◽  
Mahrouz Alvand ◽  
Alireza Tajbakhshian
Keyword(s):  
Graphene Oxide ◽  
Malachite Green ◽  
Water Samples ◽  
Fiber Optic ◽  
Linear Array ◽  
Magnetic Nanocomposites ◽  
Array Detection

scholarly journals Fast Analysis of Water Samples for Trace Amount of Crystal Violet Dye Based on Solid Phase Extraction Using Nanoporous SBA-3 prior to Determination by Fiber Optic-Linear Array Detection Spectrophotometry

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Azam Azarkohan ◽  
Farzaneh Shemirani ◽  
Mahrouz Alvand
Keyword(s):  
Standard Deviation ◽  
Relative Standard Deviation ◽  
Crystal Violet ◽  
Water Samples ◽  
Fiber Optic ◽  
Linear Array ◽  
Solid Phase ◽  
Relative Standard ◽  
Separation And Preconcentration ◽  
Array Detection

A solid phase preconcentration procedure using SBA-3 nanosorbent for the fast separation and preconcentration of crystal violet (CV) in water samples by fiber optic-linear array detection spectrophotometry (FO-LADS) is presented. Experimental parameters including pH, sample volume, amount of sorbent, type, volume, and concentration of eluent that affect the recovery of crystal violet have been optimized. Under optimized experimental conditions, analytical parameters including limit of detection, linear working range, and relative standard deviation have also been determined. A preconcentration factor of 200 was achieved in this method. In the initial solution, the detection limit for CV was found as 1.3 μg L−1. Under optimal conditions maximum adsorption capacity was obtained as 344.83 mg g−1. Also, the relative standard deviation was less than ±1.3% (n=5). The presented procedure was applied to the determination of crystal violet in water samples (fish, fish farming water, and river water) with good results.

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