Determination of Trace Amounts of Chromium(III) in Water Samples Using Online Flow Injection Catalytic Spectrophotometry

Estimation of Cr(III) in Water with the Presence of Cr(VI) by Chlorophosphonazo I Color Reaction Spectrophotometry

“…These results indicate that the specificity of the determination method of Cr 3+ reported in this paper should be acceptable. Before drawing a comparison, the method based on the property of trivalent chromium to be a catalyst for the oxidation of Indigo Carmine with potassium periodate and to lose its color with the presence of ethylenediaminetetraacetic acid and sodium tripolyphosphate for measuring Cr 3+ , 29 may also need extensive study on the interference of variables. On the basis of the procedure for determining Cr 3+ developed in this study, large quantities of analysis per person per day can be very easily achieved if liquid dispensing systems or an automated system for the spectrophotometric measurements are used.…”

“…[26][27][28][29] The discovery of a new color reaction reagent for the selective determination of Cr 3+ or Cr 6+ is vital for the successful application of spectrophotometry in practice. We report here a spectrophotometry (CCRS) based on chlorophosphonazo I ( Fig.…”

Selective determination of Cr(III) ions with novel potentiometric electrodes

“…[ 15 ] Chromium is essential for human health in small amounts due to its effect on insulin, carbohydrate, fat and protein levels which should be kept at certain ranges for the human physiology to function properly. [ 16,17 ] However, it is toxic at high concentrations. Therefore, it is of great importance to determine the chromium levels in industry and environmental samples.…”