GB/T 223.22-1994 English Version, GB/T 223.22-1994 Methods for chemical analysis of iron ,steel and alloy.The nitroso-R-salt spectrophotometric method for the determination of cobalt content (English Version)

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GB/T 223.22-1994 Methods for chemical analysis of iron ,steel and alloy.The nitroso-R-salt spectrophotometric method for the determination of cobalt content (English Version)
Standard No.:	GB/T 223.22-1994	Status:	valid remind me the status change Email:
Target Language:	English	File Format:	PDF
Word Count:	2000 words	Translation Price(USD):	40.0 remind me the price change Email:
Implemented on:	1994-10-1	Delivery:	via email in 1 business day

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Standard No.:	GB/T 223.22-1994
English Name:	Methods for chemical analysis of iron ,steel and alloy.The nitroso-R-salt spectrophotometric method for the determination of cobalt content
Chinese Name:	钢铁及合金化学分析方法亚硝基R盐分光光度法测量钴量
Chinese Classification:	H11 Steel and iron alloy analysis method
Professional Classification:	GB National Standard
Source Content Issued by:	chinaisa
Issued on:	1994-1-17
Implemented on:	1994-10-1
Status:	valid
Superseding:	GB 223.22-1982 Chemical analysis of iron, steel and alloy--The determination of cobalt by the nitroso-R salt photometric method
Target Language:	English
File Format:	PDF
Word Count:	2000 words
Translation Price(USD):	40.0
Delivery:	via email in 1 business day

GB/T 223.22-1994 is referred in:

* JB/T 4385.1-1999 General specifications for open die forgings on hammer
* NB/T 47018.5-2011 Technical permission of welding materials for pressure equipment - Part 5: Stainless steel strip electrodes and fluxes for overlay welding
* GB/T 1299-2000 Alloy tool steels
* GB/T 25825-2010 Rolls for hot strip mill and plate mill
* GB/T 9943-2008 High-speed tool steels
* NB/T 20009.7-2012 Welding Material for Pressurized Water Reactor Nuclear Power Plants-Part 7: Stainless Steel Wires and Filler Rods for Classes 1, 2, 3 Components
* GB/T 1299-2014 Tool and mould steels
*YB/T 5241-2014 Iron-nickel and iron-nickel-cobalt alloys with low expansion
*YB/T 5231-2014 Sealed iron-nickel-cobalt alloys with pe rmanent expansion
*GB/T 1503-2008 Cast steel rolls
*NB/T 20009.3-2010 Welding Material for Pressurized Water Reactor Nuclear Power Plants - Part 3: Stainless Steel Covered Electrodes for Classes 1,2,3 Components

Standard

GB/T 223.22-1994 Methods for chemical analysis of iron ,steel and alloy.The nitroso-R-salt spectrophotometric method for the determination of cobalt content (English Version)
Standard No.	GB/T 223.22-1994
Status	valid
Language	English
File Format	PDF
Word Count	2000 words
Price(USD)	40.0
Implemented on	1994-10-1
Delivery	via email in 1 business day

Detail of GB/T 223.22-1994

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Introduction of GB/T 223.22-1994

1 Subject Content and Application Scope This Standard specifies the Nitroso-R-Salt Spectrophotometric Method for the Determination of Cobalt Content. This Standard is applicable to the determination of cobalt content in pig iron, carbon steel, alloy steel and precision alloy. Determination range: 0.10%~3.00%. 2 Principle In the presence of ammonium citrate and sodium nitrite, where the solution pH is 5.5~7.5, the bivalent cobalt is rapidly oxidated to tervalent one, and it and nitroso R salt generate colored complex, and measure the absorbance after acidification eliminates interference.

Contents of GB/T 223.22-1994

1 Subject Content and Application Scope 2 Principle 3 Reagent 4 Analytical Procedures 5 Calculation of Analysis Results 6 Precision Appendix A Source Data of Precision Test (Additional) Additional Explanations:

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