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GB/T 23772-2009: Inorganic chemicals for industrial use -- General method for the determination of total nitrogen content -- Nessler reagent colorimetric method
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 23772-2009 | English | 229 |
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Inorganic chemicals for industrial use -- General method for the determination of total nitrogen content -- Nessler reagent colorimetric method
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GB/T 23772-2009
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Basic data | Standard ID | GB/T 23772-2009 (GB/T23772-2009) | | Description (Translated English) | Inorganic chemicals for industrial use -- General method for the determination of total nitrogen content -- Nessler reagent colorimetric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G10 | | Classification of International Standard | 71.060.01 | | Word Count Estimation | 10,116 | | Date of Issue | 2009-05-13 | | Date of Implementation | 2010-01-01 | | Quoted Standard | GB/T 6682-2008; HG/T 3696.2; HG/T 3696.3 | | Regulation (derived from) | PRC National Standard Approval Announcement 2009 No.6 (Total No.146) | | 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 provides a common method for the production of inorganic chemicals determination of total nitrogen content Nessler reagent colorimetric method feeds, safety tips, general provisions, reagents, instruments, equipment, analysis steps and calculations. This method is applicable to inorganic chemical products Trace inorganic nitrogen compounds (including nitrate, nitrite and ammonium) determination of the total. Detection range of 0. 05��g/mL ~ 0. 8��g/mL (as N). | GB/T 23772-2009: Inorganic chemicals for industrial use -- General method for the determination of total nitrogen content -- Nessler reagent colorimetric method
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Inorganic chemicals for industrial use. General method for the determination of total nitrogen content. Nessler's reagent colorimetric method
ICS 71.060.01
G10
National Standards of People's Republic of China
Inorganic chemical products for the general method of determination of total nitrogen content
Distillation - Nessler reagent colorimetric
Posted 2009-05-13
2010-01-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
Appendix A of this standard is an informative annex.
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standardization Technical Committee chemical inorganic chemicals Club (SAC/TC63/SC1) centralized.
This standard is mainly drafted by. Fluoride Chemicals Co., Ltd., CNOOC Tianjin Chemical Research & Design Institute, Tianjin Entry-Exit Inspection and
Quarantine Bureau.
The main drafters of this standard. Shi Xiuhua, Guo Xianhui, Lusi Wei, Liu Shao from Sun Shujun.
This standard is the first release.
Inorganic chemical products for the general method of determination of total nitrogen content
Distillation - Nessler reagent colorimetric
1 Scope
This standard specifies the general method of producing inorganic chemicals Determination of total nitrogen Nessler's reagent colorimetric method feeds, safety tips, a
General provisions, reagents, instruments, equipment, analytical procedures and the results of calculations.
This method is applicable to inorganic chemical products, trace inorganic nitrogen compounds (including nitrate, nitrite and ammonium) Determination of the total. Check
Measured in the range of 0.05μg/mL ~ 0.8μg/mL (in N gauge).
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD)
Preparation of HG/T 3696.2 inorganic chemical products, chemical analysis of impurity standard solution
Preparations of HG/T 3696.3 inorganic chemical products, chemical analysis
3 Method summary
In alkaline solution, the alloy can be fixed nitrogen in the sample, nitrate, nitrite reduced to ammonia or ammonium. Ammonia or ammonium distilled from an alkaline solution
After that, the available Nessler colorimetric determination of total nitrogen content.
4 Safety Tips
Reagents used in this test method are toxic or corrosive, the operator must be careful! Such as water splashed on the skin should immediately
Flushing, severe cases should be treated immediately.
5 General Provisions
This standard reagents and water, did not indicate when the other requirements, refer to the three water analytical reagent and GB/T 6682-2008 requirements.
Impurity standard solution, formulations and product tests required in the absence of other requirements specified according to HG/T 3696.2, HG/T 3696.3
Provisions prepared.
6 Reagents
6.1 No ammonia.
6.2 Nitrogen alloy (Cu. 50%, Al. 45%, Zn. 5%). particle diameter of not more than 0.85mm.
6.3 sulfuric acid solution. 1 + 200.
6.4 Sodium hydroxide solution. 320g/L.
6.5 N standard solution reservoir Ⅰ. 1mL solution containing nitrogen (N) 0.1mg.
Pipette Pipette 10mL nitrogen standard solution according to HG/T 3696.2 prepared, placed in 100mL volumetric flask, dilute to the mark with water
Degree, shake.
6.6 N standard solution Ⅱ. 1mL solution of nitrogen (N) 0.01mg.
Pipette Pipette 10mL nitrogen standard solution Ⅰ, set 100mL flask, diluted with water to the mark. This solution should be
Formulated the day of use.
6.7 Nessler reagent.
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