Journal ArticleDOI
Analytical applications of condensed phosphoric acid-III Iodometric determination of sulphur after reduction of sulphate with sodium hypophosphite and either tin metal or potassium iodide in condensed phosphoric acid.
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TLDR
The determination of sulphur by the hypophosphite-tin metal-CPA and tin(II)-CPA methods is interfered with by copper on account of the stabilization of copper(I) sulphide, but this interference can be eliminated by adding iodide.About:
This article is published in Talanta.The article was published on 1980-06-01. It has received 5 citations till now. The article focuses on the topics: Hypophosphite & Sodium hypophosphite.read more
Citations
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Spectrophotometric and inductively coupled plasma atomic emission spectrometric determination of titanium in ilmenites after rapid dissolution with phosphoric acid.
TL;DR: The ilmenite dissolution procedure using phosphoric acid was compatible with titanium quantification by both spectrophotometry and ICP-AES, resulting in no interferences due to vanadium.
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A reduction—spectrophotometric method for the determination of sulphate in waters
TL;DR: In this article, the sulphate is reduced by tin(II) chloride in hydriodic acid to hydrogen sulphide which is swept by nitrogen into a buffered solution of bis(2,9-dimethyl-1,10-phenanthroline) copper(I) ion.
Journal ArticleDOI
Analytical applications of condensed phosphoric acid-IV Iodometric determination of sulphur in sulphate and sulphide ores and minerals and other compounds after reduction with sodium hypophosphite and tin metal in condensed phosphoric acid.
Tadaaki Mizoguchi,Hajime Ishii +1 more
TL;DR: The pretreatment methods for the determination of sulphur in sulphur oxyacids and elemental sulphur have also been investigated.
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The Use of Phosphoric Acid in The Rapid Decomposition of Solid Samples Using Ordinary Glassware
TL;DR: In this article, the use of 85% phosphoric acid in borosilicate conical flasks in the dissolution of chromites, ilmenites, Cr2O3, V2O5 and chromium and vanadium iron alloys, at 300 ± 10 °C.
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Chemical Analysis of Hematite Ore Collected from Pokhari, Nawalparasi, Nepal
TL;DR: In this article , a quantitative chemical analysis of iron was carried out from the collected seventy-two hematite samples from Pokhari, Nawalparasi, India by channel sampling method.
References
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Tin (II)-Strong Phosphoric Acid. A New Reagent for the Determination of Sulfate by Reduction to Hydrogen Sulfide
TL;DR: In this paper, a Tin(II)-Strong Phosphoric acid (TSPA) reagent was used for the determination of sulfates by reducing to hydrogen sulfide, which is stable at room temperature but reactsviolently above 120°C.
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Determination of Sulfur by Wet Combustion with Perchloric Acid
TL;DR: In this paper, a wet combustion technique was used to determine the sulfur content of wood and pulp samples, using perchloric and nitric acids, and then the sulfur was reduced to hydrogen sulfide by boiling with a reduction mixture.
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Determination of Trace Amounts of Selenium in Water
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Spectrophotometric microdetermination of sulfate
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Rapid Determination of Inorganic Sulfur in Various Forms, Particularly in Sulfide Ores, by the Tin (II)-Strong Phosphoric Acid Reduction Method
TL;DR: In this paper, a new reagent, tin (II)-strong phosphoric acid (TSPA), was used for the determination of sulfate sulfur using a new procedure. But the procedure was not extended to other forms of inorganic compounds, e.g., sulfides, thiosulfates, sulfites and thiocyanates.
Related Papers (5)
Microcolorimetric Determination of Sulfate by Reduction to Hydrogen Sulfide with Tin(II)—Strong Phosphoric Acid
Toshiyasu Kiba,Ikuko Kishi +1 more