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GB/T 7532-2008: Determination of heavy metals in organic chemical products -- Visual colorimetry
Status: Valid GB/T 7532: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 7532-2008 | English | 149 |
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Determination of heavy metals in organic chemical products -- Visual colorimetry
| Valid |
GB/T 7532-2008
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| GB/T 7532-1987 | English | 199 |
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Organic products for industrial use--Determination of content of heavy metals content--General method--Visual limit test
| Obsolete |
GB/T 7532-1987
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PDF similar to GB/T 7532-2008
Basic data | Standard ID | GB/T 7532-2008 (GB/T7532-2008) | | Description (Translated English) | Determination of heavy metals in organic chemical products -- Visual colorimetry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G15 | | Classification of International Standard | 71.040 | | Word Count Estimation | 5,523 | | Date of Issue | 2008-04-10 | | Date of Implementation | 2008-10-01 | | Older Standard (superseded by this standard) | GB/T 7532-1987 | | Quoted Standard | GB/T 602-2002; GB/T 603-2002; GB/T 6682-1992 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.5 (Total No.118) | | 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 test methods for organic chemical products used in the determination of heavy metals in the visual colorimetry. This standard applies to the heavy metal content of the sample 0. 1��g/mL ~ 4. 0��g/mL. | GB/T 7532-2008: Determination of heavy metals in organic chemical products -- Visual colorimetry---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 heavy metals in organic chemical products. Visual colorimetry
ICS 71.040
G15
National Standards of People's Republic of China
Replacing GB/T 7532-1987
Determination of heavy metals in organic chemical products
Visual colorimetry
Posted 2008-04-10
2008-10-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 7532-1987 "General method of organic chemical products Determination of heavy metals in the Visual limit law."
This standard and GB/T 7532-1987 compared to the major differences are as follows.
--- Standard name was changed to "organic chemical products Determination of heavy metals in visual colorimetry";
--- Range changed to "This standard specifies the test methods for heavy metals in organic chemical products with visual colorimetric method. This standard is applicable
For heavy metal content (Pb) was 0.1μg/mL ~ 4.0μg/mL sample "(1987 edition Chapter 1, Excerpts
Chapter 1).
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standardization Technical Committee branch of organic chemistry (SAC/TC63/SC2) centralized.
This standard was drafted. China Petroleum Jilin Petrochemical Company carbide plant.
The main drafters of this standard. Yang Yongmei, Liru Chun, Han Shujie, Liu Liping, Kong Weili.
This standard was first published in 1987.
Determination of heavy metals in organic chemical products
Visual colorimetry
1 Scope
This standard specifies the test methods for heavy metals in organic chemical products was determined by visual colorimetry.
This standard applies to the content of heavy metals (Pb) was 0.1μg/mL ~ 4.0μg/mL sample.
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 602-2002 Chemical Reagent Determination of impurities in the preparation of standard solution used
GB/T 603-2002 Chemical Reagent Test Methods - Preparations with
Laboratory use specifications and test methods (. 1987 neq ISO 3696) GB/T 6682-1992 Analysis
Principle 3
In weak acid solution, a saturated aqueous solution of hydrogen sulfide heavy metals copper, lead, mercury and other ions precipitate as the corresponding sulfide, the resulting color
Comparison with the standard color by color visually.
4 Warning
Some test procedures prescribed test method can lead to dangerous situations, the operator should take appropriate safety and health practices.
5 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical reagents and GB/T 6682-1992 the provisions of tertiary water.
Used in the analysis of impurities determined by standard solution, preparations and products, did not indicate when the other requirements, according to GB/T 602-2002 and
GB/T 603-2002 Preparation of the provisions.
Acetic acid solution 5.1. 7 + 3;
5.2 ammonia solution;
5.3 hydrochloric acid solution;
5.4 saturated hydrogen sulphide water;
5.5 Lead standard solution. 0.01mg/mL; imbibe the determination of impurities of lead standard solution (0.1mg/mL) 10mL to 100mL capacity
Flask, dilute to the mark. Freshly prepared before use.
6 Instruments
General laboratory equipment and two matching 50mL colorimetric tube.
7 Procedure
7.1 according to the method specified in the standard product sampling and processing, if the sample after treatment is the solution, the solution was transferred to a certain amount
50mL colorimetric tube, add 0.2mL acetic acid solution; if the sample after treatment when the residue can be dissolved with 0.2mL acetic acid solution, fixed
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