How determinate thiocyanate in water samples by uv spectrophotometric?
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A simple spectrophotometric method for the determination of thiocyanate in water samples was developed. The method involves the reaction of thiocyanate with sulfur (S8) dissolved in acetone to convert it to non-toxic thiocyanate. The thiocyanate is then reacted with Fe (III) to form a red ferric-thiocyanate complex, which can be measured at 465 nm to determine the thiocyanate concentration . Another method involves the formation of the [FeSCN]2+ complex in hydrochloric and sulfuric acid medium using iron(III) sulfate and ammonium iron(III) sulfate solutions as reactants. This method has a determination limit of 2.6 μg SCN− in water solutions . A flow injection spectrophotometric method was also developed for the determination of thiocyanate in wastewaters and well water samples. This method is based on the reaction of thiocyanate with janus green and bromate, and has a linear range of 0.02–1.0 μg mL−1 . Additionally, a solid phase extraction method using manganese (III) tetrakis (p-sulfonatophenyl) porphyrin bound to Amberlite IR-400 was developed for the spectrophotometric determination of thiocyanate. This method has a linear range of 0.4-2.0 μg mL−1 .
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11 Citations | The paper provides a method for determining thiocyanate in water samples using solid phase extraction and spectrophotometry. |
| The paper provides a new method for determining thiocyanate in water samples using UV spectrophotometry. The method is based on the catalytic effect of thiocyanate on the reaction between sodium bromate and crystal violet, which is monitored spectrophotometrically at 630 nm. | |
| The paper describes a flow injection spectrophotometric method for determining thiocyanate in water samples. It uses janus green and bromate in hydrochloric acid and measures the absorbance at 554 nm. | |
6 Citations | The paper provides a method for determining thiocyanate ions in water samples using spectrophotometry. The method involves the formation of a complex with iron(III) sulfate and ammonium iron(III) sulfate solutions, and the optical density is measured at 490 nm. |
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