GB/T 6276.5-2010 English PDF

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GB/T 6276.5-2010: Determination of ammonium hydrogen carbonate for industrial use -- Part 5: Ash content -- Gravimetric method
Status: Obsolete

GB/T 6276.5: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 6276.5-2010	279	Add to Cart	3 days	Determination of ammonium hydrogen carbonate for industrial use -- Part 5: Ash content -- Gravimetric method	Obsolete
GB/T 6276.5-1986	199	Add to Cart	2 days	Ammonium hydrogen carbonate for industrial use--Determination of ash content--Gravimetric method	Obsolete

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Basic data

Standard ID: GB/T 6276.5-2010 (GB/T6276.5-2010)
Description (Translated English): Determination of ammonium hydrogen carbonate for industrial use -- Part 5: Ash content -- Gravimetric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G12
Classification of International Standard: 71.060.50
Word Count Estimation: 7,756
Date of Issue: 2010-06-30
Date of Implementation: 2011-01-01
Older Standard (superseded by this standard): GB/T 6276.5-1986
Regulation (derived from): National Standard Approval Announcement 2010 No.2 (Total No.157)
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 method for industrial use was determined by the weight of the ash containing ammonium bicarbonate JR. This section applies to industrial use-Determination of ash content in ammonium bicarbonate.

GB/T 6276.5-2010: Determination of ammonium hydrogen carbonate for industrial use -- Part 5: Ash content -- Gravimetric method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of ammonium hydrogen carbonate for industrial use Part 5. Ash content Gravimetric method. ICS 71.060.50 G12 National Standards of People's Republic of China Replacing GB/T 6276.5-1986 Determination of ammonium bicarbonate industrial Part 5. ash content - Gravimetric method Part 5. Ashcontent-Gravimetricmethod Issued on. 2010-06-30 2011-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 6276 "industrial use - Determination of ammonium bicarbonate method" is divided into nine sections. --- Part 1. ammonium bicarbonate content of acid-base titration; --- Part 2. potentiometric titration of chloride content; --- Part 3. sulphide content Visible turbidimetric method; --- Part 4. sulphate content Visible turbidimetric method; --- Part 5. ash content by weight method; --- Part 6. iron content - Phenanthroline spectrophotometric method; --- Part 7. arsenic content diethyl dithiocarbamate silver spectrophotometry; --- Part 8. arsenic content Gutzeit method; --- Part 9. heavy metal content Visible turbidimetric method. This part of GB/T 56276 Part of. This Part replaces GB/T 6276.5-1986 "industrial use ammonium bicarbonate ash content - Gravimetric method." This portion of the GB/T 6276.5-1986 The main differences are. --- Increasing the parallel determination results allow poor regulations. This part is proposed by the China Petroleum and Chemical Industry Association. This part of the National Standardization Technical Committee centralized fertilizer and soil conditioner. This section drafted by. National Fertilizer Quality Supervision and Inspection Center (Shanghai). The main drafters of this section. Zhong Wenyi, Wang Ting. This section was first issued in 1986. Determination of ammonium bicarbonate industrial Part 5. ash content - Gravimetric method

1 Scope

GB/T 6276 This section provides the determination of industrial ammonium bicarbonate by gravimetric method of ash. This section applies to industrial use - Determination of ash content in ammonium bicarbonate. Principle 2 Sample at (575 ± 25) ℃ ignition to constant mass, the mass loss represented the ash content.

3 Equipment

3.1 porcelain crucible or a quartz crucible, 100mL; 3.2 box-type high-temperature resistance furnace. the ability to control the temperature at (575 ± 25) ℃. Step 4 Analysis Do two parallel determination of sample. Previously at (575 ± 25) ℃ to constant burning quality porcelain crucible or a quartz crucible placed in a well ventilated hood, slowly add Heat, weighed about 50g sample (accurate to 0.1g), was added to a small amount in multiple crucible, attention should wait for completion of the previous sample added volatiles By then adding a group, and so on all the samples after evaporation, the ceramic crucible or a quartz crucible placed in a temperature of 300 ℃ high temperature box-type resistance furnace, slow Slowly warmed to (575 ± 25) ℃, burning continued at this temperature, until a constant mass.

5 expression analysis

Ash content w1, mass fraction and its value is expressed in%, according to equation (1). w1 = m2-m1 m × 100 (1) Where. m2 --- filled with ash value of quality porcelain crucible or a quartz crucible in grams (g); Numerical porcelain crucible or a quartz crucible mass m1 --- empty units of grams (g); Numerical m --- sample mass, in grams (g). Calculation results are shown to four decimal places, take the arithmetic mean of the parallel determination results of the measurement results.

6 allows the difference

Relative deviation parallel determination results is not more than 50%. ......

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