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SN/T 0736.15-2013: Test method of import and export fertilizers. Part 15: Simultaneous determination of arsenic and mercury content by microwave-assisted digestion-atomic fluorescence spectrometry
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 0736.15-2013 | English | 239 |
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Test method of import and export fertilizers. Part 15: Simultaneous determination of arsenic and mercury content by microwave-assisted digestion-atomic fluorescence spectrometry
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SN/T 0736.15-2013
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Basic data | Standard ID | SN/T 0736.15-2013 (SN/T0736.15-2013) | | Description (Translated English) | Test method of import and export fertilizers. Part 15: Simultaneous determination of arsenic and mercury content by microwave-assisted digestion-atomic fluorescence spectrometry | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | G20 | | Classification of International Standard | 65.080 | | Word Count Estimation | 9,912 | | Quoted Standard | GB/T 8571 | | Regulation (derived from) | ?AQSIQ About publishing 2013 First Batch 179-items Entry-Exit Inspection and Quarantine industry standard Announcement; Industry-Standard-Filing Announcement 2013 No. 9 (Total No. 165); State-Quality-Inspection-Accreditation [2013] 123 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the fertilizer arsenic, microwave digestion of mercury content-the simultaneous determination of atomic fluorescence spectrometry method. This section applies to fertilizer arsenic, mercury levels detected, the lowest limit of arse | SN/T 0736.15-2013: Test method of import and export fertilizers. Part 15: Simultaneous determination of arsenic and mercury content by microwave-assisted digestion-atomic fluorescence spectrometry
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Test method of import and export fertilizers.Part 15. Simultaneous determination of arsenic and mercury content by microwave-assisted digestion-atomic fluorescence spectrometry
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Importers and fertilizer testing methods
Part 15. Microwave Digestion - Atomic Fluorescence Spectrometry
Simultaneous determination of arsenic and mercury content
Testmethodofimportandexportfertilizers-Part 15. Simultaneous
Issued on. 2013-03-01
2013-09-16 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
SN/T 0736 "Importers fertilizer test methods" is divided into 15 parts.
--- Part 1. sampling and sample preparation;
--- Part 2. Determination of moisture;
--- Part 3. Determination of particle size;
--- Part 4. Flame atomic absorption spectrometric method for the determination of sodium content;
--- Part 5. Determination of nitrogen content;
--- Part 6. Determination of phosphorus;
--- Part 7. Determination of potassium content;
--- Part 8. Determination of shrinkage diurea content;
--- Part 9. Determination of chlorine content;
--- Part 10. Determination of the free acid;
--- Part 11. automatic analyzer nitrogen content;
--- Part 12. Determination of Arsenic, chromium, cadmium, mercury, lead by inductively coupled plasma mass spectrometry;
--- Part 13. Flame atomic absorption spectrometric method for the determination of copper, zinc, iron, manganese, magnesium, cobalt, nickel content;
--- Part 14. Ion Chromatography Trace inorganic anions;
--- Part 15. microwave digestion - atomic fluorescence spectrometry determination of arsenic and mercury content.
This is Part 15 SN/T 0736's.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This section proposed and managed by the National Certification and Accreditation Administration Committee.
This section was drafted by. People's Republic of China Shanghai Entry-Exit Inspection and Quarantine Bureau.
The main drafters of this section. Min Hong, Liu Shu, Jin Ying Hua, Jiang Haining, Tu Hong, Zhou Haiming.
Importers and fertilizer testing methods
Part 15. Microwave Digestion - Atomic Fluorescence Spectrometry
Simultaneous determination of arsenic and mercury content
1 Scope
SN/T 0736 provisions of this part of the fertilizer arsenic and mercury content in microwave digestion - atomic fluorescence spectrometry method for the simultaneous determination.
This section applies to fertilizer arsenic, mercury content is detected, the lowest measurement limit of arsenic was 0.21μg/g, the lowest measurement limit of mercury was 0.02μg/g.
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.
Preparation of GB/T 8571 compound fertilizer laboratory samples
3 Method summary
After the sample digestion, hydrochloric acid - nitric acid, mixed media, first with thiourea - ascorbic acid pre-reduction of pentavalent arsenic to trivalent arsenic, however
Then with potassium borohydride reducing agent, the sample of arsenic and mercury are reduced to arsine gas and mercury vapor, argon as a carrier gas atomization
Vessel, the simultaneous determination of the dual channel atomic fluorescence spectrometer arsenic, mercury atomic fluorescence intensity, analyze the content of arsenic and mercury in the fertilizer.
4 Reagents and materials
Unless otherwise indicated, analytical grade and used only to confirm the above reagent, double distilled water or equivalent purity.
4.1 potassium borohydride.
4.2 sodium hydroxide.
Thiourea 4.3.
4.4 ascorbic acid.
4.5 potassium dichromate.
4.6 nitric acid (ρ = 1.42g/mL).
4.7 hydrochloric acid (ρ = 1.19g/mL).
4.8 50% hydrochloric acid - nitric acid mixture (11). accurate Pipette 100mL of hydrochloric acid (4.7) and 100mL nitric acid (4.6), diluted with water
400mL, brown bottle storage.
4.9 nitric acid (19).
4.10 potassium borohydride solution (20g/L). Weigh 2.5g of sodium hydroxide (4.2), dissolved in water, was added 10.0g potassium borohydride (4.1), plus
Diluted with deionized water to 500mL, using now.
4.11 thiourea - ascorbic acid solution (50g/L). Weigh thiourea (4.3), ascorbic acid (4.4) each 10.0g, dissolved in water and diluted to
200mL, using now.
4.12 arsenic standard stock solution (1000μg/mL). traceable to national standard.
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