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GB/T 12658-2008: Paper, board and pulp -- Determination of sodium content
Status: Valid GB/T 12658: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 12658-2008 | English | 139 |
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3 days [Need to translate]
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Paper, board and pulp -- Determination of sodium content
| Valid |
GB/T 12658-2008
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| GB/T 12658-1990 | English | 239 |
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Paper, board and pulp--Determination of potassium and sodium content
| Obsolete |
GB/T 12658-1990
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PDF similar to GB/T 12658-2008
Basic data | Standard ID | GB/T 12658-2008 (GB/T12658-2008) | | Description (Translated English) | Paper, board and pulp -- Determination of sodium content | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Y30 | | Classification of International Standard | 85-010 | | Word Count Estimation | 6,626 | | Date of Issue | 2008-08-19 | | Date of Implementation | 2009-05-01 | | Older Standard (superseded by this standard) | GB/T 12658-1990 | | Quoted Standard | GB/T 450; GB/T 462; GB/T 740; GB/T 6682 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.14 (Total No.127) | | 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 dry and wet digestion by flame emission spectrometry determination of insulating pulp or flame atomic absorption spectrometry, paper and cardboard in the sodium content of the method. This standard applies to all kinds of insulation pulp, paper and paperboard, this standard also applies to ordinary pulp, paper and cardboard, but the amount of sample required to be adjusted according to the sodium content. According to the detection limit of the instrument may be used after wet digestion method using flame emission spectrometry. The detection limit of sodium 2mg/kg. | GB/T 12658-2008: Paper, board and pulp -- Determination of sodium content---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.
Paper, board and pulp. Determination of sodium content
ICS 85-010
Y30
National Standards of People's Republic of China
Replacing GB/T 12658-1990
Paper, board and pulp sodium content
Posted 2008-08-19
2009-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 12658-1990 "Pulp, paper and paperboard in potassium, sodium content determination."
This standard and GB/T 12658-1990 compared to the main changes are as follows.
--- Modify the standard name;
--- Increasing the foreword;
--- Modify the scope (1990 edition Chapter 1; Chapter 1 of this edition);
--- Modify the normative references (1990 Edition Chapter 2; Chapter 2 of this edition);
--- Modified principle (1990 Edition Chapter 3; first edition Chapter 3);
--- Modify the reagent requirements (Edition 1990, Chapter 4; Chapter 4 of this edition);
--- Modify the instrument specifications (1990 edition Chapter 5; Chapter 5 of this edition);
--- Modification and preparation of the sample (1990 edition, Chapter 6; Chapter 6 of this edition);
--- Modify the test procedure, the deletion of the potassium measurement (1990 edition, Chapter 7; Chapter 7 of this edition);
--- Increased quality assurance and control (Chapter 8 of this edition).
The standard proposed by China National Light Industry Council.
This standard by the National Standardization Technical Committee of the paper industry.
This standard was drafted. People's Republic of China SZCIQ, China Pulp and Paper Research Institute.
The main drafters of this standard. Xu Rong, Chen Xuhui, Guhao Fei, Chen Xiangyang.
This standard replaces the standards previously issued as follows.
--- GB/T 12658-1990.
This standard by the National Standardization Technical Committee is responsible for interpreting the paper industry.
Paper, board and pulp sodium content
1 Scope
This standard specifies the dry and wet digestion Determination by flame insulation pulp, paper and paper flame emission spectroscopy or atomic absorption spectrometry
The sodium content of the plate method.
This standard applies to all kinds of insulation pulp, paper and paperboard, this standard also applies to ordinary pulp, paper and board, but try to be based on quantity of sodium
Content adjustment.
According to the detection limit of the instrument may be used after wet digestion method by flame emission spectrometry, sodium detection limit of 2mg/kg.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 450 paper and cardboard to take samples and specimens to the vertical and horizontal, positive and negative determination (GB/T 450-2008, ISO 186.2002,
MOD)
GB/T 462 paper, board and pulp - Determination of water sample (GB/T 462-2008, ISO 287. 1985, ISO 638.
1978, MOD)
GB/T 740 pulp samples taken (GB/T 740-2003, ISO 7213. 1981, IDT)
GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD)
Principle 3
After ashing a sample, dissolved in hydrochloric acid, after flame atomization, the determination of sodium 588.9nm spectral line emission spectra intensity or sodium 588.9nm
Absorbance or emission intensity is proportional to the sodium content in the sample, a standard curve of absorbance line, the resulting comparative quantitative analysis.
4 Reagents
Unless otherwise indicated, used in the analysis confirmed only for the gifted class pure reagents.
4.1 Water, GB/T 6682, Grade 2.
4.2 hydrochloric acid (HCl), ρ = 1.18g/mL, mass fraction of 36% to 38%.
4.3 cesium chloride solution (of CsCl, AR, 10g/L), weighed 1.0g of cesium chloride in 100mL beaker, dissolved in water moved
100mL volumetric flask, dilute to the mark, shake, stored in polyethylene plastic bottles. The solution is ionization inhibitor, using atomic absorption
Use spectroscopy.
4.4 Sodium standard solution Ⅰ, ρ (Na) = 1000mg/L, accurately weighed spectrum of pure sodium chloride learn from 110 ℃ drying 2h after 0.2542g in
50mL beaker, dissolved in water and transferred to 100mL volumetric flask, add 5mL hydrochloric acid (4.2), dilute to the mark. store
Polyethylene plastic bottle aside.
4.5 Sodium standard solution Ⅱ, ρ (Na) = 50mg/L, with a pipette pipetted 5.0mL standard solution of sodium Ⅰ (4.4) in 100mL capacity
Flask, was added 5mL hydrochloric acid (4.2), diluted with water to the mark.
5 Instruments
Conventional laboratory instruments and
5.1 Muffle furnace. capable of maintaining the temperature at 450 ℃ ± 25 ℃.
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