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Position: Chinese Standard in English/GB/T 223.49-1994
GB/T 223.49-1994   Methods for chemical analysis of iron, steel and alloy Extraction separation-chlorophosphonazo mA spectrophotometric method for the determination of the total rare earth content (English Version)
Standard No.: GB/T 223.49-1994 Status:valid remind me the status change

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Language:English File Format:PDF
Word Count: 2000 words Price(USD):110.0 remind me the price change

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Implemented on:1995-6-1 Delivery: via email in 1 business day
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Standard No.: GB/T 223.49-1994
English Name: Methods for chemical analysis of iron, steel and alloy Extraction separation-chlorophosphonazo mA spectrophotometric method for the determination of the total rare earth content
Chinese Name: 钢铁及合金化学分析方法 萃取分离-偶氮氯膦mA分光光度法测定稀土总量
Professional Classification: GB    National Standard
Issued by: AQSIQ
Issued on: 1994-9-26
Implemented on: 1995-6-1
Status: valid
Language: English
File Format: PDF
Word Count: 2000 words
Price(USD): 110.0
Delivery: via email in 1 business day
1 Subject Content and Application Scope This Standard specifies the PMBP - extraction separation - chlorophosphonazo mA spectrophotometric method for the determination of the total rare earth content. This standard is applicable to determination of total rare earth content in carbon steel, alloy steel, high temperature alloy and precision alloy. Determination range: 0.0010%~0.20%. 2 Principle Where pH is about 2, extraction separation of iron shall be conducted with acetylacetone - trichloromethane. Where pH is 5.5, with the existence of ammonium thiocyanate and sulfosalicylic acid, PMBP-benzene is applied to extract rare earth to be separated from other coexisting elements. Back extraction is applied with diluted hydrochloric acid. Chlorophosphonago mA and rare earth generate blue coordination compound, and measure the absorbance at the wavelength of 670 nm at spectrophotometer. Take the color development curve of gadolinium with a given amount of oxalic acid and Zn-EDTA as the working curve to determine the total rare earth content.
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:
GB/T 223.49-1994 is referred in:
* GB/T 8163-2008 Seamless steel tubes for liquid service
* GB 3531-2008 Low alloy steel plates for low temperature pressure vessels
* GB 3531-2008/XG1-2012 Low alloy steel plates for low temperature pressure vessels
* GB/T 17396-2009 Hot-rolled seamless steel tubes for hydraulic pillar service
* GB/T 11263-2005 The Hot-rolled H and Cut T Section
* GB/T 3078-2008 Quality structural steel cold drawn bars
* JB/T 4385.1-1999 General specifications for open die forgings on hammer
* GB 3531-2008/XG1-2012 Low alloy steel plates for low temperature pressure vessels
* GB/T 17396-2009 Hot-rolled seamless steel tubes for hydraulic pillar service
* GB 3531-2008 Low alloy steel plates for low temperature pressure vessels
* GB/T 8163-2008 Seamless steel tubes for liquid service
* GB/T 3078-2008 Quality structural steel cold drawn bars
* GB/T 3078-2008 Quality structural steel cold drawn bars
* GB/T 11263-2005 The Hot-rolled H and Cut T Section
* JB/T 4385.1-1999 General specifications for open die forgings on hammer
* GB/T 3078-2008 Quality structural steel cold drawn bars
* TB/T 2344-2012 Technical Specifications for the Procurement of 43 kg/m~75kg/m as Rolled Rails
* 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 6653-2008 Steel plates and strips for welded gas cylinders
* GB/T 6725-2002 Cold Formed Steel Sections
* GB/T 8163-2008 Seamless steel tubes for liquid service
* TB/T 2344-2003 Technical specifications for the procurement of 43 kg/m~75kg/m as rolled rails
* YB/T 4149-2006 Continuously cast ruond billet for seamless steel tube rolling
* GB/T 3077-2015 Alloy structure steels
*GB 2585-2007 Hot-rolled steel rails for railway
Code of China
Standard
GB/T 223.49-1994  Methods for chemical analysis of iron, steel and alloy Extraction separation-chlorophosphonazo mA spectrophotometric method for the determination of the total rare earth content (English Version)
Standard No.GB/T 223.49-1994
Statusvalid
LanguageEnglish
File FormatPDF
Word Count2000 words
Price(USD)110.0
Implemented on1995-6-1
Deliveryvia email in 1 business day
Detail of GB/T 223.49-1994
Standard No.
GB/T 223.49-1994
English Name
Methods for chemical analysis of iron, steel and alloy Extraction separation-chlorophosphonazo mA spectrophotometric method for the determination of the total rare earth content
Chinese Name
钢铁及合金化学分析方法 萃取分离-偶氮氯膦mA分光光度法测定稀土总量
Chinese Classification
Professional Classification
GB
ICS Classification
Issued by
AQSIQ
Issued on
1994-9-26
Implemented on
1995-6-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
Language
English
File Format
PDF
Word Count
2000 words
Price(USD)
110.0
Keywords
GB/T 223.49-1994, GB 223.49-1994, GBT 223.49-1994, GB/T223.49-1994, GB/T 223.49, GB/T223.49, GB223.49-1994, GB 223.49, GB223.49, GBT223.49-1994, GBT 223.49, GBT223.49
Introduction of GB/T 223.49-1994
1 Subject Content and Application Scope This Standard specifies the PMBP - extraction separation - chlorophosphonazo mA spectrophotometric method for the determination of the total rare earth content. This standard is applicable to determination of total rare earth content in carbon steel, alloy steel, high temperature alloy and precision alloy. Determination range: 0.0010%~0.20%. 2 Principle Where pH is about 2, extraction separation of iron shall be conducted with acetylacetone - trichloromethane. Where pH is 5.5, with the existence of ammonium thiocyanate and sulfosalicylic acid, PMBP-benzene is applied to extract rare earth to be separated from other coexisting elements. Back extraction is applied with diluted hydrochloric acid. Chlorophosphonago mA and rare earth generate blue coordination compound, and measure the absorbance at the wavelength of 670 nm at spectrophotometer. Take the color development curve of gadolinium with a given amount of oxalic acid and Zn-EDTA as the working curve to determine the total rare earth content.
Contents of GB/T 223.49-1994
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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Keywords:
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