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GB/T 17767.1-2008: Determination of organic-inorganic compound fertilizers -- Part 1: Total nitrogen content
Status: Valid GB/T 17767.1: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 17767.1-2008 | English | 139 |
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Determination of organic-inorganic compound fertilizers -- Part 1: Total nitrogen content
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GB/T 17767.1-2008
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| GB/T 17767.1-1999 | English | 199 |
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Determination of total nitrogen content for organic-inorganic compound fertilizers
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GB/T 17767.1-1999
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PDF similar to GB/T 17767.1-2008
Basic data | Standard ID | GB/T 17767.1-2008 (GB/T17767.1-2008) | | Description (Translated English) | Determination of organic-inorganic compound fertilizers -- Part 1: Total nitrogen content | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G20 | | Classification of International Standard | 65.080 | | Word Count Estimation | 6,696 | | Date of Issue | 2008-06-17 | | Date of Implementation | 2008-09-01 | | Older Standard (superseded by this standard) | GB/T 17767.1-1999 | | Quoted Standard | GB/T 8571; GB/T 8572; HG/T 2843 | | Adopted Standard | AOAC in 2.061, NEQ; �������� 26715-1985, NEQ | | Regulation (derived from) | National Standard Approval Announcement 2008 No.10 (Total No.123) | | 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 organic-inorganic compound fertilizers determination of total nitrogen content. This section applies to by a variety of organic and inorganic fertilizers composed of solid organic-inorganic compound fertilizer, also applies to the determination of a variety of solid organic fertilizer total nitrogen content. | GB/T 17767.1-2008: Determination of organic-inorganic compound fertilizers -- Part 1: Total nitrogen content
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Determination of organic-inorganic compound fertilizers Part 1. Total nitrogen content
ICS 65.080
G20
National Standards of People's Republic of China
Replacing GB/T 17767.1-1999
Determination of inorganic compound fertilizer - organic
Part 1. total nitrogen content
Posted 2008-06-17
2008-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 17767 "Organic - inorganic compound fertilizer and method" is divided into three parts.
--- Part 1. total nitrogen content;
--- Part 2. phosphorus content;
--- Part 3. The total potassium content.
This section is GB/T Part of 117,767.
This section of the American Association of Public Analysts Manual of Analytical Methods (AOAC) (1984) in 2.061, "Determination of the total nitrogen content of fertilizers party
Law --- Improved Synthetic nitrogen Law ", the former Soviet Union national standards ГOCT26715. 1985" Determination of the total nitrogen content of organic fertilizer, "a
Consistency not equivalent.
This Part replaces GB/T 17767.1-1999 "Organic - inorganic Compound Fertilizers - Determination of total nitrogen content."
The main difference between this version and the GB/T 17767.1-1999 are.
--- Sodium hydroxide standard titration solution from 0.1mol/L to 0.5mol/L;
--- The calculation formula of total nitrogen content was rewritten.
This part is proposed by the China Petroleum and Chemical Industry Association.
This part of the National Standardization Technical Committee and soil conditioners Fertilizers (SAC/TC105) and focal point responsible for the interpretation.
This section drafted by. National Fertilizer Quality Supervision and Inspection Center (Shanghai).
The main drafters of this section. Fan Bin, Liu Wanqing, Yang.
This part of the standard replaces the previous editions are.
--- GB/T 17767.1-1999.
Determination of inorganic compound fertilizer - organic
Part 1. total nitrogen content
1 Scope
GB/T 17767 provisions of this part of the organic - inorganic compound fertilizer by determination of total nitrogen content.
This section applies to by a variety of organic fertilizer and chemical fertilizer composed of solid organic - inorganic compound, also suitable for a variety of solid organic
Determination of the total nitrogen content of fertilizers.
2 Normative references
The following documents contain provisions which, through reference GB/T 17767 in this section, constitute provisions of this part. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
Preparation of GB/T 8571 compound fertilizer laboratory samples
GB/T 8572 after distillation of the total nitrogen content in compound fertilizer titration
HG/T 2843 fertilizer products for chemical analysis commonly used standard titration solution, standard solution, reagent solution and indicator solution
Principle 3
Reduction in the acidic medium of ammonium nitrate, in the presence of a catalyst or mixing hydrogen peroxide with concentrated sulfuric acid digestion, the conversion of nitrogen
Ammonium sulfate. Distilled from an alkaline solution of ammonia, sulfuric acid and absorbed in excess of the standard titration solution, methyl red - methylene blue mixing means
It shows the presence of liquid sodium hydroxide standard titration solution back titration.
4 Reagents and materials
Warning --- reagent hydrogen peroxide is corrosive and oxidation resistance, and sulfuric acid solution, hydrochloric acid and sodium hydroxide solution is corrosive
Nature, related operations should be carried out in a fume hood. This section does not indicate that all possible security issues, the user has the responsibility to take appropriate safety
And health practices and to ensure compliance with the conditions relevant national regulations.
As used in this section reagent solution and water, in the specifications and method of preparation is not specified, it shall comply with the provisions of HG/T 2843's.
4.1 Chromium powder. fineness of less than 250μm;
4.2 potassium sulfate;
4.3 copper sulfate pentahydrate;
4.4 Preparation of the mixed catalyst. 50g to 1000g of potassium sulfate and copper sulfate pentahydrate thoroughly mixed and ground carefully;
4.5 sulfuric acid;
4.6 hydrochloric acid;
4.7 hydrogen peroxide;
4.8 Sodium hydroxide solution. 400g/L;
4.9 sulfuric acid solution. Ba (12H2SO4
) = 0.5mol/L or Ba (12H2SO4
) = 1mol/L;
4.10 sodium hydroxide standard titration solution. Ba (NaOH) = 0.5mol/L;
4.11 methyl red - methylene blue mixed indicator solution;
4.12 wide pH test paper;
4.13 grease.
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