GB/T 6276.6-2010 English PDF

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GB/T 6276.6-2010: Determination of ammonium hydrogen carbonate for industrial use -- Part 6: Iron content -- O-phenathroline spectrophotometric method
Status: Obsolete

GB/T 6276.6: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 6276.6-2010	199	Add to Cart	2 days	Determination of ammonium hydrogen carbonate for industrial use -- Part 6: Iron content -- O-phenathroline spectrophotometric method	Obsolete
GB/T 6276.6-1986	199	Add to Cart	2 days	Ammonium hydrogen carbonate for industrial use--Determination of iron content--O-phenanthroline spectrophotometric method	Obsolete

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Basic data

Standard ID: GB/T 6276.6-2010 (GB/T6276.6-2010)
Description (Translated English): Determination of ammonium hydrogen carbonate for industrial use -- Part 6: Iron content -- O-phenathroline spectrophotometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G12
Classification of International Standard: 71.060.50
Word Count Estimation: 5,525
Date of Issue: 2010-06-30
Date of Implementation: 2011-01-01
Older Standard (superseded by this standard): GB/T 6276.6-1986
Quoted Standard: HG/T 2843
Adopted Standard: ISO 6685-1982, NEQ
Regulation (derived from): National Standard Approval Announcement 2010 No.2 (Total No.157)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the use of phenanthroline spectrophotometry duo Lin Industrial iron content of ammonium bicarbonate. This section applies to industrial use-Determination of iron content in ammonium bicarbonate.

GB/T 6276.6-2010: Determination of ammonium hydrogen carbonate for industrial use -- Part 6: Iron content -- O-phenathroline spectrophotometric method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of ammonium hydrogen carbonate for industrial use Part 6. Iron content o-phenathroline spectrophotometric method ICS 71.060.50 G12 National Standards of People's Republic of China Replacing GB/T 6276.6-1986 Determination of ammonium bicarbonate industrial Part 6. iron content phenanthroline spectrophotometry Part 6. Ironcontent-o-Phenathrolinespectrophotometricmethod (ISO 6685. 1982, Chemicalproductsforindustrialuse- 1,10-Phenanthrolinespectrophotometricmethod, NEQ) Issued on. 2010-06-30 2011-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 6276 "industrial use - Determination of ammonium bicarbonate method" is divided into nine sections. --- Part 1. ammonium bicarbonate content of acid-base titration; --- Part 2. potentiometric titration of chloride content; --- Part 3. sulphide content Visible turbidimetric method; --- Part 4. sulphate content Visible turbidimetric method; --- Part 5. ash content by weight method; --- Part 6. iron content - Phenanthroline spectrophotometric method; --- Part 7. arsenic content diethyl dithiocarbamate silver spectrophotometry; --- Part 8. arsenic content Gutzeit method; --- Part 9. heavy metal content Visible turbidimetric method. This part of GB/T 66276 Part of. This Part replaces GB/T 6276.6-1986 "industrial use - Determination of iron content in ammonium bicarbonate phenanthroline spectrophotometry." This part of ISO 6685. 1982 is not equivalent degree of consistency. This portion of the GB/T 6276.6-1986 The main differences are. --- Reagent solution, standard titration solution preparation and calibration methods such as the implementation of HG/T 2843 standards; --- Increasing the parallel determination results allow poor regulations. This part is proposed by the China Petroleum and Chemical Industry Association. This part of the National Standardization Technical Committee centralized fertilizer and soil conditioner. This section drafted by. National Fertilizer Quality Supervision and Inspection Center (Shanghai). The main drafters of this section. Zhou Qingyun, Qu Xin. This section was first issued in 1986. Determination of ammonium bicarbonate industrial Part 6. iron content phenanthroline spectrophotometry

1 Scope

GB/T 6276 provisions of this part using phenanthroline spectrophotometric determination of iron content in industrial ammonium bicarbonate. This section applies to industrial use ammonium bicarbonate Determination of iron content.

2 Normative references

The following documents contain provisions which, through reference to GB/T 6276 to the present, constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. HG/T 2843 fertilizer products for chemical analysis commonly used standard titration solution, standard solution, reagent solution and indicator solution Principle 3 Reduction with ascorbic acid test solution of ferric ions into ferrous ions, at a pH of from 2 to 9.00, a divalent iron ions with phenanthroline Phen generated orange-red complex, the maximum absorption wavelength at 510nm, absorbance was measured with a spectrophotometer to calculate the iron content.

4 Instrument

General laboratory equipment 4.1; 4.2 spectrophotometer with 1cm or 3cm cuvette.

5 Reagents and materials

This standard reagent solution and water, in the specifications and method of preparation is not specified, it shall comply with the provisions of HG/T 2843's. 5.1 hydrochloric acid solution, c (HCl) = 1mol/L; 5.2 ammonia solution, 2.5%; 5.3 pairs nitrophenol indicator solution, 1g/L; 5.4 acetic acid - sodium acetate buffer solution, pH value of about 4.5; 5.5 ascorbic acid solution, 20g/L, the solution was stored in a brown bottle, the use of about 1Od; 5.6 phenanthroline solution, 2g/L; 5.7 iron standard solution, 1mg/mL; 5.8 iron standard solution, 0.01mg/mL, diluted 100-fold with accurate iron standard solution (5.7), the day of use. Step 6 Analysis Draw standard curve 6.1 6.1.1 Preparation of standard colorimetric solution In only a few 100mL beaker were added 0mL, 1.0mL, 2.0mL, 3.0mL, 4.0mL10.0mL iron standard solution (5.8), add water 40mL and 10mL hydrochloric acid solution, add two drops of p-nitrophenol indicator solution, aqueous ammonia solution was added dropwise to the solution just yellow, then With hydrochloric acid solution faded to yellow and drop excess 1.0mL, heated to a boil, cooled and transferred to 100mL volumetric flask. ......

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