determination of phosphorus in chromium ores by spectrophotometry

(PDF) Spectrophotometric Determination of Phosphorus in ...

Influence of chromium concentration on the phosphorus determination. a) 4 mg L-1 P b) 4 mg L-1 P + 3,000 mg L-1 Cr(III) P and c) 4 mg L-1 P + 7,000 mg L-1 Cr(III). Influence of the resin mesh on ...

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Standard Test Method for Determination of Phosphorus in ...

Scope. 1.1 This test method covers the determination of phosphorus in nickel, ferronickel, and nickel alloys in the range 0.0007 % to 0.05 %. 1.2 Arsenic, chromium, hafnium, niobium, silicon, tantalum, titanium, and tungsten interfere, but the interference can be

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Spectrophotometric Determination of Phosphorus in Iron ...

2017-9-15  For manganese and chromium, the region where the ores are extracted should be known since the concentration of phosphorus varies from region to region. As phosphorus is a very important constituent of several steels and its concentration affects the welding conditions, determination and monitoring of phosphorus are mandatory in order to

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Spectrophotometric determination of phosphorus in steel ...

1981-3-1  Determination of Phosphorus in Alloy Steel (Table 1) For steels containing less than 2% chromium, 35% nickel, 5% va- nadium, proceed as in the case of carbon steel. For high-chromium steel add 3 ml diluted 1:1 hydrochloric acid. If the chromium content is more than 2%, a correction for the absorption of the blank solution may be necessary.

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Spectrophotometric determination of phosphorus in iron ...

The often employed spectrophotometric method for the determination of phosphorus is based on an ammonium molybdate reaction, followed by stannous chloride reduction of the complex in acidic medium, which is catalyzed by phosphate ion producing a complex known as molybdenum blue2.

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(PDF) Spectrophotometric determination of chromium in ...

A rapid and sensitive spectrophotometric method for the determination of chromium is presented, which is based on the oxidation of prochlorperazine dimaleate (PCPM) by chromium (VI) in ...

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Determination of phosphorus in natural waters by long ...

2002-5-1  Highly Sensitive Detection System Composed of a Thin, Long, Flow-Through Cell and a Semiconductor Laser for FIA Spectrophotometry and its Application to the Determination of Total Phosphorus in Water. Applied Spectroscopy 1996, 50 (9) , 1145-1149. DOI: 10.1366/0003702963905088.

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Determination of chromium in ores, rocks and related ...

1980-10-1  Because of the greater stability and ease of preparation of aqueous calibration solutions: particularly for routine work, the AAS determination of chromium in aqueous medium was also investigated. 779 780 This paper describes the determination of chromium in ores, concentrates, rocks, soils and clays after its preliminary separation, by co-precipitation with hydrous ferric oxide, from the

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Method of analysis for determination of the chromium (Cr ...

2018-1-16  Method of analysis for determination of the chromium (Cr) species in water samples by spectrophotometry with diphenylcarbazide Adam Wiryawan1*, Retno Suntari2, Zaenal Kusuma2, Rurini Retnowati1, R.Y.Perry Burhan3, Syekhfani2 1Department of Chemistry, Faculty of Sciences, Brawijaya University, Malang, East Java 65145, Indonesia

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(PDF) Spectrophotometric determination of trace amounts of ...

Phosphorus determination was carried out with digested plant samples through phospho-molybdenum blue method on UV/Visible spectrophotometers (Perkin-Elmer Lambda 25) according to Ganesh et al ...

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Spectrophotometric determination of phosphorus in iron ...

Keywords: phosphorus, binary alloys, spectrophotometry . Introduction. Metals such as chromium and manganese are incorporated into steel in the form of binary alloys such as Fe-Cr and Fe-Mn. These elements are obtained by reduction of ores such as hematite, chromite and manganese oxide, respectively 1. For manganese and chromium, the region ...

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(PDF) Spectrophotometric Determination of Phosphorus in ...

Influence of chromium concentration on the phosphorus determination. a) 4 mg L-1 P b) 4 mg L-1 P + 3,000 mg L-1 Cr(III) P and c) 4 mg L-1 P + 7,000 mg L-1 Cr(III). Influence of the resin mesh on ...

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Spectrophotometric Determination of Phosphorus in Iron ...

2020-1-17  For manganese and chromium, the region where the ores are extracted should be known since the concentration of phosphorus varies from region to region. As phosphorus is a very important constituent of several steels and its concentration affects the welding conditions, determination and monitoring of phosphorus are mandatory in order to

More

Spectrophotometric determination of phosphorus in steel ...

1981-3-1  Determination of Phosphorus in Alloy Steel (Table 1) For steels containing less than 2% chromium, 35% nickel, 5% va- nadium, proceed as in the case of carbon steel. For high-chromium steel add 3 ml diluted 1:1 hydrochloric acid. If the chromium content is more than 2%, a correction for the absorption of the blank solution may be necessary.

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(PDF) Spectrophotometric determination of chromium in ...

A method for the determination of chromium is presented, based on the oxidation of hydroxylamine hydrochloride to nitrous acid by chromium(VI) in acetic acid medium followed by diazotization of ...

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ASTM E1070-17 - Standard Test Method for Determination

Standard Test Method for Determination of Phosphorus in Iron Ores by Phospho-Molybdenum-Blue Spectrophotometry. 1.1 This test method covers the determination of phosphorus in iron ores, concentrates, and agglomerates in the range from 0.005 % to 1.0 % phosphorus.

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ASTM E1070 - Standard Test Method for Determination of ...

2017-11-15  Standard Test Method for Determination of Phosphorus in Iron Ores by Phospho-Molybdenum-Blue Spectrophotometry This test method covers the determination of phosphorus in iron ores, concentrates, and agglomerates in the range from 0.005 % to 1.0 % phosphorus. ... Scope 1.1 This test method covers the determination of phosphorus in iron ores ...

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Determination of phosphorus in natural waters by long ...

2002-5-1  Highly Sensitive Detection System Composed of a Thin, Long, Flow-Through Cell and a Semiconductor Laser for FIA Spectrophotometry and its Application to the Determination of Total Phosphorus in Water. Applied Spectroscopy 1996, 50 (9) , 1145-1149. DOI: 10.1366/0003702963905088.

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Extraction and Flame Spectrophotometric Determination of ...

2020-12-1  Direct Photometric Determination of Aluminum in Iron Ores-Corrections. Analytical Chemistry 1959, 31 (2) ... The determination of chromium sesquioxide in faeces by flame spectrophotometry. Clinica Chimica Acta 1964, 9 (6) , ... The determination of chromium in low-alloy irons and steels by atomic absorption spectrophotometry.

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Validation of UV - VIS Spectrophotometry for

Phosphorus existing under different forms and status in soils is a significantly important nutrient during the growth and development of trees. Spectrophotometry has been developed with many

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ISO - ISO 6127:1981 - Chromium ores — Determination of ...

Chromium ores — Determination of phosphorus content — Reduced molybdophosphate photometric method. Buy this standard This standard was last reviewed and confirmed in 2016. Therefore this version remains current. Abstract Preview. The method is applicable to products having a phosphorus content of 0,002 to 0,1 % (m/m). ...

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Spectrophotometric determination of phosphorus in steel ...

1981-3-1  Determination of Phosphorus in Alloy Steel (Table 1) For steels containing less than 2% chromium, 35% nickel, 5% va- nadium, proceed as in the case of carbon steel. For high-chromium steel add 3 ml diluted 1:1 hydrochloric acid. If the chromium content is more than 2%, a correction for the absorption of the blank solution may be necessary.

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Method 365.1, Revision 2.0: Determination of Phosphorus

2021-6-25  DETERMINATION OF PHOSPHORUS BY AUTOMATED COLORIMETRY 1.0 SCOPE AND APPLICATION 1.1 This method covers the determination of specified forms of phosphorus in drinking, ground, and surface waters, and domestic and industrial wastes. 1.2 The methods are based on reactions that are specific for the orthophosphate ion. ...

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ISO 6127:1981(en), Chromium ores ? Determination of ...

This International Standard specifies a reduced molybdophosphate photometric method for the determination of the phosphorus content of chromium ores. The method is applicable to products having a phosphorus content of 0,002 to 0,1 % ( m / m ).

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Determination of phosphorus in natural waters by long ...

2002-5-1  Highly Sensitive Detection System Composed of a Thin, Long, Flow-Through Cell and a Semiconductor Laser for FIA Spectrophotometry and its Application to the Determination of Total Phosphorus in Water. Applied Spectroscopy 1996, 50 (9) , 1145-1149. DOI: 10.1366/0003702963905088.

More

Extraction and Flame Spectrophotometric Determination of ...

2020-12-1  Direct Photometric Determination of Aluminum in Iron Ores-Corrections. Analytical Chemistry 1959, 31 (2) ... The determination of chromium sesquioxide in faeces by flame spectrophotometry. Clinica Chimica Acta 1964, 9 (6) , ... The determination of chromium in low-alloy irons and steels by atomic absorption spectrophotometry.

More

Direct determination of calcium and phosphorus in mineral ...

2018-3-1  Calcium and phosphorus determination using different calibration strategies ... (IC) and spectrophotometry in the UV–Vis , ... A new sample preparation method for WD-XRF analysis of sulfide ores by fusion techniques: a BN crucible for protection against contamination and quantitative retention of

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ASTM-E1917 Standard Test Method for Determination of ...

1.1 This test method covers the determination of phosphorus in nickel, ferronickel, and nickel alloys in the range 0.0007 % to 0.05 %. 1.2 Arsenic, chromium, hafnium, niobium, silicon, tantalum, titanium, and tungsten interfere, but the interference can be avoided by complexation or volatilization (for chromium).

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Validation of UV - VIS Spectrophotometry for

Phosphorus existing under different forms and status in soils is a significantly important nutrient during the growth and development of trees. Spectrophotometry has been developed with many

More

(PDF) Determination of trace elements in minerals by ...

A review of trace elements determination in minerals by electrothermal atomic absorption spectrometry (ETAAS) is given. There are many valid reasons to analyze the trace elements content in ...

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Method 365.1, Revision 2.0: Determination of

2021-6-25  DETERMINATION OF PHOSPHORUS BY AUTOMATED COLORIMETRY 1.0 SCOPE AND APPLICATION 1.1 This method covers the determination of specified forms of phosphorus in drinking, ground, and surface waters, and domestic and industrial wastes. 1.2 The methods are based on reactions that are specific for the orthophosphate ion. ...

More

ISO - ISO 6127:1981 - Chromium ores —

Chromium ores — Determination of phosphorus content — Reduced molybdophosphate photometric method. Buy this standard This standard was last reviewed and confirmed in 2016. Therefore this version remains current. Abstract Preview. The method is applicable to products having a phosphorus content of 0,002 to 0,1 % (m/m). ...

More

Extraction-spectrophotometric determination of

Extraction-spectrophotometric determination of trace phosphorus in chromium-bearing materials which may contain silica, niobium, tantalum, zirconium, titanium, and hafnium Full Record Other

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Factors Affecting the Determination of Total

2021-6-11  Therefore, phosphorus is an important indicator for evaluating water quality. Factors Affecting the Determination of Total Phosphorus by Ammonium Molybdate Spectrophotometry. 1. Washing of sampling bottles and sample storage. Since total phosphorus is easy to adsorb, the sampling bottle should be cleaned before sampling.

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Extraction and Flame Spectrophotometric

2020-12-1  Direct Photometric Determination of Aluminum in Iron Ores-Corrections. Analytical Chemistry 1959, 31 (2) ... The determination of chromium sesquioxide in faeces by flame spectrophotometry. Clinica Chimica Acta 1964, 9 (6) , ... The determination of chromium in low-alloy irons and steels by atomic absorption spectrophotometry.

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THE DETERMINATION OF CHROMIUM

Determination of chromium sesquioxide in faeces by a spectrophotometric method. Hesford F , Bührer M Clin Chim Acta , 82(3):225-228, 01 Jan 1978

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Document Center, Inc. Your Online Library of US

ASTM-E1070 - Standard Test Method for Determination of Phosphorus in Iron Ores by Phospho-Molybdenum-Blue Spectrophotometry; ASTM-E1071 - Test Method for Determination of Reducibility of Iron Ores (Withdrawn 1995) ASTM-E1072 - Test Method for Low Temperature Breakdown of Iron Ores (Withdrawn 1995)

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硅铁中锰、磷、铬的联合测定

2021-8-3  Combined determination of manganese, phosphorus and chromium in ferrosilicon SHEN Jiufeng,ZENG Huishu* Casting and Forging, Guangdong Province, Engineering Technology Research and Development Center,Shaoguan 512031,China

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(PDF) Determination of trace elements in minerals

A review of trace elements determination in minerals by electrothermal atomic absorption spectrometry (ETAAS) is given. There are many valid reasons to analyze the trace elements content in ...

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IS 1493-3: Methods of chemical analysis of iron

Section Name: Ores and Raw Materials (MTD 13) Designator of Legally Binding Document: IS 1493-3 Title of Legally Binding Document: Methods of chemical analysis of iron ores, Part 3: Determination of titanium, chromium, vanadium, calcium and magnesium by atomic absorption spectrophotometry

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