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SN/T 2721-2010: Determination of arsenic and mercury in export-import ores. Atomic fluorescence spectrometric method
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| SN/T 2721-2010 | English | 189 |
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Determination of arsenic and mercury in export-import ores. Atomic fluorescence spectrometric method
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SN/T 2721-2010
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Basic data | Standard ID | SN/T 2721-2010 (SN/T2721-2010) | | Description (Translated English) | Determination of arsenic and mercury in export-import ores. Atomic fluorescence spectrometric method | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | D04 | | Word Count Estimation | 7,776 | | Date of Issue | 2010-11-01 | | Date of Implementation | 2011-05-01 | | Quoted Standard | GB/T 2007.1; GB/T 2007.2; GB/T 6682; GB/T 8170 | | Regulation (derived from) | National Quality Inspection (2010) 582 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the import and export of copper concentrate, zinc concentrate, molybdenum, iron ore, manganese ore, chrome ore, magnesite, talc, bauxite, barite, phosphate ore, antimony concentrate, fluorspar, coal, graphite and other minerals of arsenic and mercury in common detection methods. This standard applies to export copper concentrate, zinc concentrate, molybdenum, iron ore, manganese ore, chrome ore, magnesite, talc, bauxite, barite, phosphate ore, antimony concentrate, fluorspar, coal, graphite and other minerals in the detection of arsenic and mercury, the measurement range is from 0. 001% to 0. 5% arsenic, mercury: 0. 0001% to 0. 1%, this standard does not apply in the determination of mercury in gold-bearing minerals. | SN/T 2721-2010: Determination of arsenic and mercury in export-import ores. Atomic fluorescence spectrometric method
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Determination of arsenic and mercury in export-import ores.Atomic fluorescence spectrometric method
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Import and export of mineral products in the detection of arsenic and mercury
Atomic fluorescence spectrometry
Issued on. 2010-11-01
2011-05-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 requirements.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Hubei Entry-Exit Inspection and Quarantine of Guangxi People's Republic of China
Bureau, People's Republic of China Tianjin Entry-Exit Inspection and Quarantine of Liaoning People's Republic of China, People's Republic of China
Guangdong CIQ.
The main drafters of this standard. Chen Jianhua, Gu Songhai, Yuan Aiping, Panrui flowers, Huang Daliang, Zheng Jianguo.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Import and export of mineral products in the detection of arsenic and mercury
Atomic fluorescence spectrometry
Warning --- personnel should use this standard regular laboratory work experience. This standard does not point out all possible security asked
Questions, users should take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.
1 Scope
This standard specifies the import and export of copper concentrate, zinc concentrate, molybdenum concentrate, iron ore, manganese ore, chrome ore, magnesite, talc, bauxite, barite,
Universal Detection of arsenic and mercury in phosphate rock minerals, antimony ore, fluorspar, coal and graphite.
This standard applies to the import and export of copper concentrate, zinc concentrate, molybdenum concentrate, iron ore, manganese ore, chrome ore, magnesite, talc, bauxite, barite,
Detection of arsenic and mercury in phosphate rock minerals, antimony ore, fluorspar, coal, graphite, etc., which measures the range of arsenic. 0.001% to 0.5% mercury.
0.0001% to 0.1%, this standard is not applicable to the determination of mercury in the gold-bearing minerals.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 2007.1 bulk minerals sampling and sample preparation General manual sampling methods
GB/T 2007.2 bulk minerals sampling and sample preparation General manual sample preparation method
Laboratory use specifications and test methods GB/T 6682 Analysis
GB/T 8170 numerical rounding rules
Principle 3
After the samples by acid digestion, potassium borohydride is added, the test solution of arsenic and potassium borohydride reacts hydride; potassium borohydride reduction of mercury into the original
Sub-state mercury. The mixed gas of argon gas into the quartz atomizer, producing atomic fluorescence emission of mercury and arsenic hollow cathode lamps light excitation,
The fluorescence intensity under fixed conditions with the measured fluid proportional to the concentration of arsenic and mercury, compared with standard series quantitation.
4 Reagents
Unless otherwise indicated, the analysis uses only recognized as analytical reagent or analytical grade level and above, the water must meet GB/T 6682
Two water requirements.
4.1 hydrochloride (ρ1.16g/mL ~ 1.19g/mL).
Nitrate 4.2 (ρ1.42g/mL).
4.3 Hydrogen peroxide (30% mass fraction).
4.4 of concentrated sulfuric acid (ρ1.84g/mL).
4.5 potassium hydroxide.
4.6 potassium borohydride.
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