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GB/T 9733-2008: Chemical reagent -- General method for the determination of carbonyl compounds
Status: Valid GB/T 9733: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 9733-2008 | English | 149 |
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Chemical reagent -- General method for the determination of carbonyl compounds
| Valid |
GB/T 9733-2008
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| GB/T 9733-1988 | English | 199 |
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Chemical reagent--General method for the determination of carbonyl compounds
| Obsolete |
GB/T 9733-1988
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PDF similar to GB/T 9733-2008
Basic data | Standard ID | GB/T 9733-2008 (GB/T9733-2008) | | Description (Translated English) | Chemical reagent -- General method for the determination of carbonyl compounds | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G60 | | Classification of International Standard | 71.040.30 | | Word Count Estimation | 5,562 | | Date of Issue | 2008-05-15 | | Date of Implementation | 2008-11-01 | | Older Standard (superseded by this standard) | GB/T 9733-1988 | | Quoted Standard | GB/T 602; GB/T 603; GB/T 6682; GB/T 9721 | | Adopted Standard | ISO 6353-1-1982, NEQ | | Regulation (derived from) | National Standard Approval Announcement 2008 No.8 (Total No.121) | | 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 transformation of carbonyl compounds into 2, 4-Dinitrophenylhydrozones general method with colorimetric determination. This standard applies to the determination of trace organic reagent carbonyl compounds. Spectrophotometric or visual colorimetric detection range 0. 2��g/mL ~ 1. 6��g/mL (in CO meter). | GB/T 9733-2008: Chemical reagent -- General method for the determination of carbonyl compounds---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.
Chemical reagent. General method for the determination of carbonyl compounds
ICS 71.040.30
G60
National Standards of People's Republic of China
Replacing GB/T 9733-1988
Chemical Reagents
General method for determination of the carbonyl compound
(ISO 6353-1. 1982, Reagentsforchemicalanalysis-
Part 1. Generaltestmethods, NEQ)
Posted 2008-05-15
2008-11-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard and ISO 6353-1. 1982 "Chemical analysis of reagent --- Part 1. General test method" non-equivalent.
This standard replaces GB/T 9733-1988 "Determination of chemical reagents carbonyl compounds General Method", compared with the GB/T 9733-1988
The main changes are as follows.
--- Improve spectrophotometry (the 1988 edition, Chapter 6, Section 6 of this edition);
--- According to GB/T 1.1-2000 requirements of editorial changes.
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standardization Technical Committee Chemistry Chemicals Branch (SAC/TC63/SC3) centralized.
This standard was drafted. Shanghai Institute of chemical reagents.
The main drafters of this standard. Suiqi Ying, Sheng Xiaohua.
This standard was first published in 1988.
Chemical Reagents
General method for determination of the carbonyl compound
1 Scope
This standard specifies the conversion of carbonyl compounds into 2,4 Dinitrophenylhydrozones common with colorimetric method assay.
This standard applies to the determination of trace organic reagent carbonyl compounds. Spectrophotometric or visual colorimetric detection range
0.2μg/mL ~ 1.6μg/mL (in CO meter).
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 602 Determination of impurities in chemical reagents prepared standard solution (GB/T 602-2002, ISO 6353-1. 1982, NEQ) with
GB/T 603 chemical reagent test method Preparations of articles (GB/T 603-2002, ISO 6353-1 with. 1982,
NEQ)
GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD)
GB/T 9721 Chemicals General molecular absorption spectrophotometry (UV and visible part)
3 PRINCIPLE OF THE METHOD
In acidic medium, the carbonyl compound with 2,4-dinitrophenylhydrazine reaction of 2,4-dinitrophenyl hydrazone, was dark red in the alkaline solution
Color can be used for spectrophotometric carbonyl compounds or visual colorimetric method.
4 Reagents and materials
Unless otherwise specified in this standard, the standard solution used in formulations and products, according to GB/T 602, the provisions of the preparation of GB/T 603; and experiments
Water should be consistent with GB/T 6682 in the three water specifications.
5 instruments and devices
5.1 General laboratory equipment.
5.2 Spectrophotometer. comply with GB/T 9721's.
5.3 a distillation apparatus.
6 Determination
Sampling according to product standards and test solution preparation, grinding mouth placed 25mL colorimetric tube, add 1mL 2,4- dinitrophenylhydrazine solution
(1g/L), cover colorimetric tube, shake and let stand 30min. Plus 8mL pyridine, 2mL water, 2mL potassium hydroxide - methanol solution, shake, quiet
Set 30min. Diluted with carbonyl-free methanol to 25mL, shake. The dark red solution was compared with the standard colorimetric solution.
Preparation of standard colorimetric solution is specified amount of carbonyl compounds (CO) containing standard solution, test solution at the same time with the same treatment.
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