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GB/T 13025.9-2012: General test method in salt industry -- Determination of lead
Status: Valid GB/T 13025.9: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 13025.9-2012 | English | 279 |
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General test method in salt industry -- Determination of lead
| Valid |
GB/T 13025.9-2012
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| GB/T 13025.9-1991 | English | 199 |
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General test method in salt industry--Determination of lead ion (photometry)
| Obsolete |
GB/T 13025.9-1991
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PDF similar to GB/T 13025.9-2012
Basic data | Standard ID | GB/T 13025.9-2012 (GB/T13025.9-2012) | | Description (Translated English) | General test method in salt industry -- Determination of lead | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X35 | | Classification of International Standard | 71.060.50 | | Word Count Estimation | 12,148 | | Older Standard (superseded by this standard) | GB/T 13025.9-1991; GB/T 18962-2003 | | Quoted Standard | GB/T 6682-2008 | | Regulation (derived from) | National Standards Bulletin No. 13 of 2012 | | 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 determination of lead salt products method. This section applies to the determination of lead salt products. | GB/T 13025.9-2012: General test method in salt industry -- Determination of lead---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.
General test method in salt industry.Determination of lead
ICS 71.060.50
X35
National Standards of People's Republic of China
Replace GB/T 13025.9-1991, GB/T 18962-2003
General test methods for salt industry - Determination of lead
2012-06-29 release
2012-12-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People 's Republic of China
China National Standardization Management Committee released
Foreword
This part is one of the series of standards for general testing methods for the salt industry. This series of standards is currently divided into the following 13 parts. If necessary, other tests
The methodological criteria will be supplemented by follow-up work.
GB/T 13025.1 General test methods for salt industry - Determination of particle size;
GB/T 13025.2 General test methods for salt industry - Determination of whiteness;
GB/T 13025.3 General test methods for salt industry - Determination of moisture;
GB/T 13025.4 General test methods for salt industry - Determination of water insoluble matter;
GB/T 13025.5 General test methods for salt industry - Determination of chloride ion;
GB/T 13025.6 General test methods for salt industry - Determination of calcium and magnesium;
GB/T 13025.7 General test methods for salt industry - Determination of iodine;
GB/T 13025.8 General test methods for salt industry - Determination of sulfate;
GB/T 13025.9 General test methods for salt industry - Determination of lead;
GB/T 13025.10 General test methods for salt industry - Determination of ferrous cyanide;
GB/T 13025.11 General test methods for salt industry - Determination of fluorine;
GB/T 13025.12 General test methods for salt industry - Determination of barium;
General test methods for salt industry - Determination of arsenic GB/T 13025.13.
This part is part 9 of GB/T 13025.
This part is based on the rules of GB/T 1.1-2009.
This part of the GB/T 13025.9-1991 "General test method for salt industry lead ion determination (photometric method)" and
GB/T 18962-2003 "General test methods for salt industry - Determination of lead ions (atomic absorption spectrophotometric method)". This part with
GB/T 13025.9-1991 compared to the editorial changes in the main changes are as follows.
--- integrated flame atomic absorption spectrophotometry;
- increased hydride atomic fluorescence spectrophotometry;
Increased Hydride Atomic Absorption Spectrophotometry.
This part of the China Light Industry Federation, the National Salt Standardization Technical Committee.
This part of the drafting unit. National Hai Lake Salt Standardization Center, Qinghai Province Salt Industry Co., Ltd.
This part of the main drafters. Zhao Yi, Yu Xiuling, Wen Huaike.
This part of the previous version of the release of the situation.
--- GB/T 13025.9-1991;
--- GB/T 18962-2003.
General test methods for salt industry - Determination of lead
1 Scope
This part of GB/T 13025 specifies the determination of lead in salt products.
This part applies to the determination of lead in salt products.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, the only dated edition applies
, The latest version (including all amendments) applies to this document.
Analysis of laboratory water specifications and test methods GB/T 6682-2008
3 Hydride Atomic Fluorescence Spectrophotometry
3.1 Principles
Under acidic conditions, the lead in the sample reacts with sodium borohydride to form lead volatile hydride (PbH4), which is carried by the carrier gas into quartz atomization
Heat decomposition into atomic lead, in the special lead hollow cathode lamp irradiation, the ground state lead atoms are excited to high energy state, in the deactivation back to the base
State, the emission of the characteristic wavelength of fluorescence, the fluorescence intensity in the fixed conditions and lead content is proportional to, compared with the standard series of quantitative.
3.2 Reagents
3.2.1 Reagent specifications
Unless otherwise stated, only the reagents identified as analytical reagents and the secondary water specified in GB/T 6682-2008 are used in the analysis.
3.2.2 Sodium borohydride solution (15g/L)
3.00 g of sodium borohydride and 1.00 g of sodium hydroxide were weighed and dissolved in.200 mL of water.
3.2.3 Hydrochloric acid solution (1 1)
Measure 250 mL of concentrated hydrochloric acid and dissolve in 250 mL of water.
3.2.4 Potassium ferricyanide solution (100g/L)
Weigh 10 g of potassium ferricyanide, add water and dilute to 100 mL.
3.2.5 oxalic acid solution (20g/L)
Weigh 2.0 g of oxalic acid, add water and dilute to 100 mL.
3.2.6 Hydrochloric acid solution (2 98)
A solution of 10.0 mL of concentrated hydrochloric acid was dissolved in 490 mL of water. This solution is carrier liquid.
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