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GB/T 5505-2008: Inspection of grain and oils -- Determination of the ash content by incineration
Status: Obsolete GB/T 5505: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 5505-2008 | English | 239 |
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Inspection of grain and oils -- Determination of the ash content by incineration
| Obsolete |
GB/T 5505-2008
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| GB/T 5505-1985 | English | 199 |
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2 days [Need to translate]
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Inspection of grain and oilseeds--Methods for determination of ash content
| Obsolete |
GB/T 5505-1985
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PDF similar to GB/T 5505-2008
Basic data | Standard ID | GB/T 5505-2008 (GB/T5505-2008) | | Description (Translated English) | Inspection of grain and oils -- Determination of the ash content by incineration | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X04 | | Classification of International Standard | 67.050 | | Word Count Estimation | 6,630 | | Date of Issue | 2008-08-04 | | Date of Implementation | 2008-12-01 | | Older Standard (superseded by this standard) | GB/T 5505-1985 | | Quoted Standard | GB/T 5497 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.14 (Total No.127) | | 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 food, principle determination of ash in oil, reagents, instrument, analytical procedures and the results of calculations. This standard applies to food, determination of the ash content of the oil. | GB/T 5505-2008: Inspection of grain and oils -- Determination of the ash content by incineration---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.
Inspection of grain and oils. Determination of the ash content by incineration
ICS 67.050
X04
National Standards of People's Republic of China
Replacing GB/T 5505-1985
Inspection of grain - Determination of ash
Posted 2008-08-04
2008-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is GB/T 5505-1985 "of grain and oilseeds - Determination of ash test" amendments.
This standard and GB/T 5505-1985 main technical differences are as follows.
--- The high temperature furnace burning temperature from 500 ℃ ~ 550 ℃ modified to 550 ℃ ± 10 ℃.
Since the implementation of this standard, instead of the GB/T 5505-1985.
The standard proposed by the National Food Authority.
This standard by the National Standardization Technical Committee OILS.
This standard was drafted. Beijing foodstuff and Inspection.
The main drafters of this standard. Guo Qin, Shang Yane, Fan gull, Liu Jie.
This standard replaces the standards previously issued as follows.
--- GB/T 5505-1985.
Inspection of grain - Determination of ash
1 Scope
This standard specifies the food, fuel ash in principle determined, reagents, instruments, analytical procedures, and the results of calculations.
This standard applies to food, the determination of ash content in the oil.
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 5497 grain and oilseeds - Determination of water test
3 550 ℃ burning method
3.1 Principle
The sample was 550 ℃ ± 10 ℃ ashing temperature to completely burning the volatile organic compounds after weighing the residues.
3.2 Reagents
3.2.1 Ferric chloride. AR.
3.2.2 ferric chloride solution (5g/L). Weigh 0.5g of ferric chloride dissolved in 100mL blue-black ink.
3.3 Instrument
3.3.1 muffle furnace. also known as Mao Fu furnace, Muffle furnace, high temperature furnace, capable of producing more than 550 ℃ high temperature, and temperature control.
3.3.2 Analytical Balance. a sense of the amount of 0.0001g.
3.3.3 porcelain crucible. a capacity of 18mL ~ 20mL.
3.3.4 dryers. built-effective color gel.
3.3.5 crucible tongs. long handle and short handle.
3.4 Analysis Steps
3.4.1 Moisture
According to GB/T 5497 Determination of sample water (W).
3.4.2 Sample Preparation
Samples were prepared according to GB/T in 5497 requirements.
3.4.3 crucible process
Take a clean, dry porcelain crucible with a brush dipped in a solution of ferric chloride blue or black ink in the crucible ID number and then placed in a crucible
550 ℃ ± 10 ℃ muffle furnace burning 30min ~ 60min, to move the crucible furnace door, until red hot crucible disappear, transferred to a dryer
The cooling to room temperature, taken out and weighed crucible mass, repeated burning, cooling, weighing, until the mass difference before and after no more than two
0.0002g, record crucible mass (m1 0).
3.4.4 Sample Determination
Weigh and mix the sample (m1) 2g ~ 3g, accurate to 0.0002g, to deal with a good crucible, the crucible on the furnace, staggered crucible
Cover, heating the sample until completely carbonized. Then, the crucible in a muffle furnace 550 ℃ ± 10 ℃, the first on the mouth for a moment, then moved
Furnace, staggered crucible lid, close the door, at 550 ℃ ± 10 ℃ burning 2h ~ 3h. In the burning process, the crucible should swap positions
1 to 2 times, burning sample to black soot disappeared into a gray so far. Moving to the crucible furnace door, to be red hot crucible disappear
After transfer to cool to room temperature in a desiccator, and weigh. Then burn 30min, cooling, weighing, until constant mass (m1). Last burning quality
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