GB/T 7532-2008 English PDF

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GB/T 7532-2008: Determination of heavy metals in organic chemical products -- Visual colorimetry
Status: Valid

GB/T 7532: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 7532-2008	149	Add to Cart	2 days	Determination of heavy metals in organic chemical products -- Visual colorimetry	Valid
GB/T 7532-1987	199	Add to Cart	2 days	Organic products for industrial use--Determination of content of heavy metals content--General method--Visual limit test	Obsolete

Similar standards

GB/T 6324.6   GB/T 6324.5   GB/T 7531   GB/T 6324.12   GB/T 6015   

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Older Standard (superseded by this standard): GB/T 7532-1987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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