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SN/T 0736.6-2010: Chemical analysis of fertilizers for import and export. Part 6: Determination of phosphorus
Status: Valid SN/T 0736.6: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 0736.6-2010 | English | 259 |
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Chemical analysis of fertilizers for import and export. Part 6: Determination of phosphorus
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SN/T 0736.6-2010
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| SN/T 0736.6-1999 | English | 279 |
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Chemical analysis of fertilizers for import and export. Determination of phosphorus content
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SN/T 0736.6-1999
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Basic data | Standard ID | SN/T 0736.6-2010 (SN/T0736.6-2010) | | Description (Translated English) | Chemical analysis of fertilizers for import and export. Part 6: Determination of phosphorus | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | G20 | | Word Count Estimation | 10,111 | | Date of Issue | 2010-11-01 | | Date of Implementation | 2011-05-01 | | Older Standard (superseded by this standard) | SN/T 0736.6-1999 | | Quoted Standard | GB/T 603; GB/T 6682; SN/T 0736.1 | | Regulation (derived from) | National Quality Inspection (2010) 582 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the import and export of fertilizer phosphorus, soluble phosphorus, and phosphorus content of the measurement method. This standard applies to the determination of phosphorus fertilizer import and export. | SN/T 0736.6-2010: Chemical analysis of fertilizers for import and export. Part 6: Determination of phosphorus
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Chemical analysis of fertilizers for import and export Part 6. Determination of phosphorus
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Instead of the SN/T 0736.6-1999
Importers and fertilizer testing methods
Part 6. Determination of phosphorus
Part 6. Determinationofphosphorus
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 section drafted in accordance with GB/T 1.1-2009 given rules.
SN/T 0736 "Importers fertilizer test methods" series of standards consists of 12 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;
--- 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.
This section SN/T Section 60736 of.
0736.6-1999 "Import and Export Inspection Method Determination of phosphorus fertilizer," Since the implementation of this section instead of the SN/T .
This section compared with the SN/T 0736.6-1999 The main changes are as follows.
--- According to GB/T 20001.4-2001 "Rules for drafting standards - Part 4. Chemical analysis methods," the original structure of the standard
modify.
--- Original standard gravimetric method as the first part of this law, and as the Arbitration Law.
--- Reference Russian State Standard "ГОСТ20851.2. 1975" in Molybdovanadophosphoric spectrophotometry as a second method. This part of Russia
Ross national standards. The main technical differences "ГОСТ20851.2 1975" as follows. phosphorus pentoxide (P2O5) series of standard working
Curve drawing, Russian national standards adopted 10 points, SN/T 0736 This section uses six points.
This part by the National Certification and Accreditation Administration of People's Republic of China and focal points.
This section was drafted by. People's Republic of China Shandong Entry-Exit-Entry Inspection and Xinjiang People's Republic of China
Quarantine Bureau.
The main drafters of this section. Wang Jun, Zhao Zuliang, National Day, Cai hair, Qi Jialin, SURVEYING.
This section previous editions. ZBG20005-1987, SN/T 0736.6-1999.
Importers and fertilizer testing methods
Part 6. Determination of phosphorus
Reagents WARNING --- The experimental method used in toxic or corrosive, the operation should be cautious as to be splashed on the skin
Immediately wash with water, severe cases should be treated immediately.
1 Scope
SN/T 0736 provisions of this part of the determination of the import and export of fertilizer phosphorus, soluble phosphorus and phosphorus content.
This section applies to the determination of the import and export of phosphorus fertilizer.
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, undated references, the latest edition (including any amendments) applies to this document.
GB/T 603 chemical reagent in test methods - Preparations with
Laboratory use specifications and test methods GB/T 6682 Analysis
SN/T 0736.1 fertilizer import and export inspection methods of sampling and sample preparation
3 The first method gravimetric method (Arbitration Act)
3.1 Reagents
Unless otherwise specified, use only analytical reagent. Used in the test preparation and products, did not indicate when the other requirements, according
GB/T 603 provisions prepared.
3.1.1 Water, GB/T 6682, three.
3.1.2 citric acid.
3.1.3 ammonium citrate.
3.1.4 hydrochloride. ρ = 1.19g/mL.
3.1.5 Nitrate. ρ = 1.42g/mL.
3.1.6 perchloric acid. ρ = 1.67g/mL.
3.1.7 acetone.
3.1.8 hydrochloric acid solution (15).
3.1.9 nitric acid solution (11).
3.1.10 aqua regia. hydrochloric acid - nitric acid (31).
3.1.11 citric acid solution (20g/L). Weigh 20g of citric acid, dissolved in an appropriate amount of water and dilute to 1L, and mix.
3.1.12 neutral ammonium citrate solution. dissolving 450g ammonium citrate in an appropriate amount of water, ammonia water was added dropwise carefully and accurately adjusted to pH 7.0, and then
After diluted with water, so that at 20 ℃, the density of the solution is 1.09g/mL.
3.1.13 Quimociac solution.
Solution A. 70g of sodium molybdate was dissolved in 150mL of water;
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