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SN/T 0548.1-2002: Determination of 1, 3-dichloro-2-propanol and 2, 3-dichloro-1-propanol in soy sauce for export
Status: Obsolete SN/T 0548.1: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 0548.1-2002 | English | 519 |
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Determination of 1, 3-dichloro-2-propanol and 2, 3-dichloro-1-propanol in soy sauce for export
| Obsolete |
SN/T 0548.1-2002
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| SN/T 0548-1996 | English | 479 |
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4 days [Need to translate]
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Rule for inspection of soy sauce for export
| Obsolete |
SN/T 0548-1996
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PDF similar to SN/T 0548.1-2002
Basic data | Standard ID | SN/T 0548.1-2002 (SN/T0548.1-2002) | | Description (Translated English) | Determination of 1, 3-dichloro-2-propanol and 2, 3-dichloro-1-propanol in soy sauce for export | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X66 | | Word Count Estimation | 13,186 | | Date of Issue | 2002-08-02 | | Date of Implementation | 2003-01-01 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China | | Summary | This standard specifies the sauce of 1, 3 dichloro-2 propanol (abbreviated 1, 3 chloropropanol, 1, 3-DCP) and 2, 3-dichloro-1 propanol (abbreviated 2, 3 Chlorine propanol, 2, 3-DCP) sampling, sample preparation and gas chromatography method. This standard applies to exports of soy 1, 3 dichloro-2 propanol and 2, 3 dioxo-1 propanol test. | SN/T 0548.1-2002: Determination of 1, 3-dichloro-2-propanol and 2, 3-dichloro-1-propanol in soy sauce for export
---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 1, 3-dichloro-2-propanol and 2, 3-dichloro-1-propanol in soy sauce for export
People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard
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Export soy sauce, bismuth dichlorohydrin
And hydrazine, test method for chlorinated dichlorohydrin
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┐┐ release
Implementation
People's Republic
The General Administration of Quality Supervision, Inspection and Quarantine issued
Foreword
The measurement methods in this standard are based on relevant domestic and foreign literatures, and are developed after research, improvement and verification.
Appendix A of this standard is an informative annex.
This standard is proposed and managed by the National Certification and Accreditation Administration.
This standard is drafted by. Guangdong Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China.
The main drafters of this standard. Rong Hui, Wang Zhiyuan, Zhang Siqun, Liang Great.
This standard is the first industry standard for entry-exit inspection and quarantine.
stew. -
Export soy sauce, bismuth-dichloro-hydrazine-propanol
And hydrazine, hydrazine-dichloro-hydrazine-propanol test method
range
This standard specifies 1,3-dichloro-2-propanol (referred to as 1,3-chloropropanol, 1,3-DCP) and 2,3-dichloro-1-propanol (2,3 for short) in soy sauce. -
Sampling, sample preparation and gas chromatography determination of chloropropanol, 2,3-DCP).
This standard applies to the inspection of 1,3-dichloro-2-propanol and 2,3-dichloro-1-propanol in export soy sauce.
抽样 Sampling and sample preparation
. Sampling principle
Representative samples were taken at different locations according to the inspection lot.
. Sampling method
.. 6 pieces are taken out of 100 pieces, and more than 100 pieces are counted according to formula (1).
槡牕 = 爫 stew 2 (1)
In the formula.
牕--the number of samples (take the integer, the fractional part is rounded up);
爫--The total number of batches.
.. Bottled soy sauce is sampled from one bottle to two bottles per container. Each batch should be sampled at least six bottles (500mL per bottle, the same below), four of which are used.
For inspection, leave a sample of two bottles.
.. Each batch of bulk soy sauce is collected in a batch of not less than 3000mL (or 3kg), and is divided into three grinding bottles (microbial sampling containers and
All utensils need to be sterilized).
. Label
The sample name, lot number, date of manufacture, production unit, sampler and date of sampling must be indicated on the sample immediately after sampling.
. Method summary
The 1,3-dichloro-2-propanol and 2,3-dichloro-1-propanol in the sample were purified by a diatomaceous earth column, and the analyte was eluted with n-hexane-diethyl ether.
The eluate was measured by a gas chromatograph equipped with an electron capture detector and quantified by an external standard method.
. Reagents and materials
All reagents were of analytical grade unless otherwise specified, and the experimental water was distilled water.
.. hexane.
.. hexane-ether volume ratio. 9+1.
.. Anhydrous sodium sulfate. 650 ° C burning for 4h, cooled and stored in a sealed container for use.
.. Diatomaceous earth. burned at 600 ° C for 6 h, cooled and stored in a sealed container for use.
.. 1,3-Dichloro-2-propanol and 2,3-dichloro-1-propanol standard. purity ≥99%.
.. 1,3-dichloro-2-propanol and 2,3-dichloro-1-propanol standard solution. accurately weigh the appropriate amount of 1,3-dichloro-2-propanol and 2,3- Dichloro-
The 1-propanol standard was dissolved in a small amount of n-hexane, and a standard stock solution of 1000 μg of stewed mL was prepared in n-hexane. As needed
Dilute to a standard working solution of the appropriate concentration with n-hexane.
stew. -
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