Photometric determination of a trace amount of nitrite by its kinetic effect.

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概要

• 論文の詳細を見る

• A new photometric method has been developed for determining nitrite ions. This method is based on the kinetic effect of nitrite ions on the color-fading of the iron(III) thiocyanate complex in dilute nitric acid solution in the presence of iodide ions. The reaction is initiated by adding an ammonium iron(III) sulfate solution to the sample solution containing a mixture of potassium thiocyanate and potassium iodide at 25 °C. A concentration of nitrite ions, ranging from 0.0005 to 10 ppm can be determined by measuring the absorbance at 460 nm at a given time after the initiation using four appropriate calibration curves. Silver, mercury(II), iron(II), sulfide, sulfite, thiosulfate, chromate and cyanide ions in the concentration range from 0.1 to 1 ppm level interfered with the determination.

• 公益社団法人 日本化学会の論文

著者

• Utsumi Satori

  College Of Science And Technology Nihon University

• Okutani Tadao

  College of Science and Technology, Nihon University

• Sakuragawa Akio

  College of Science and Technology, Nihon University

• Kenmotsu Akira

  College of Science and Technology, Nihon University

関連論文

• Spectrophotometric Determination of Ultramicro Amounts of Anions by Catalytic Reactions (〔日本分析化学会〕創立30周年特別記念号)
• Photometric determination of a trace amount of nitrite by its kinetic effect.
• The Spectrophotometric Determination of Boron in Condensed Water from Fumaroles

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