A new catalytic oxidation method for sensitive quantification of bromate in flours and bottled water using AgNPs

  title={A new catalytic oxidation method for sensitive quantification of bromate in flours and bottled water using AgNPs},
  author={Abbas Farmany and Seyede Shima Mortazavi and Ehsan Hashemi and Reza Sahraei},
  journal={Environmental Monitoring and Assessment},
In this paper, a simple and sensitive spectrophotometric method for the determination of nanomolar level of bromate, based on the catalytic effect of silver nanoparticles on the oxidation of acid red 14 by potassium bromate, is described. The reaction rate was monitored spectrophotometrically by measuring the decrease in absorbance of acid red 14 at 516 nm. The detection limit of the method was 8 ng/mL, and the linear range was between 15 and 130 ng/mL. The effects of acidity, concentration of… 
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The assay is sensitive and represents a new tool for the determination of bromate, which is a carcinogen, and a possible CL mechanism is suggested that involves a redox reaction between the CQDs, bromates and sulfite in the acidic medium.
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A multisyringe flow injection system for the spectrophotometric determination of bromate in water is proposed, based on the oxidation of phenothiazine compounds by bromate in acidic medium. Several
Fluorimetric determination of bromate by ion-exchange separation and post-column derivatization
For the determination of bromate in drinking water a stopped-flow post-column reaction was developed following the separation of bromate from the matrix by an anion-exchange column. In the
A Fluorescence Quenching Method for the Determination of Bromate Ion with 4,5-Dibromophenylfluorone and Cetyltrimethylammonium Bromide
Abstract A highly sensitive and selective fluorescence quenching method was developed to determine the bromate ion (BrO3 −) with 4,5-dibromophenylfluorone (DB-PF) as fluorogenic reagent. BrO3 −
Determination of dissolved bromate in drinking water by ion chromatography and post column reaction: interlaboratory study.
All method performance characteristics obtained indicate that the draft ISO/DIS 11206 standard method meets the requirements set down by the Drinking Water Directive, and can be considered to fit its intended analytical purpose.