HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189760 (18 Oct 2025)

GB/T 9735-2008 English PDF

US$149.00 · In stock
Delivery: <= 2 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 9735-2008: Chemical reagent -- General method for the determination of heavy metals
Status: Valid

GB/T 9735: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 9735-2008English149 Add to Cart 2 days [Need to translate] Chemical reagent -- General method for the determination of heavy metals Valid GB/T 9735-2008
GB/T 9735-1988English199 Add to Cart 2 days [Need to translate] Chemical reagent--General method for the determination of heavy metals Obsolete GB/T 9735-1988

PDF similar to GB/T 9735-2008


Standard similar to GB/T 9735-2008

GB/T 9741   GB/T 9728   GB/T 9724   GB/T 9734   GB/T 9736   GB/T 9733   

Basic data

Standard ID GB/T 9735-2008 (GB/T9735-2008)
Description (Translated English) Chemical reagent -- General method for the determination of heavy metals
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G60
Classification of International Standard 71.040.30
Word Count Estimation 5,528
Date of Issue 2008-05-15
Date of Implementation 2008-11-01
Older Standard (superseded by this standard) GB/T 9735-1988
Quoted Standard GB/T 602; GB/T 603; GB/T 6682
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 acetic acid in the medium into heavy metal sulfides and general method by visual colorimetric assay. This standard applies to the determination of heavy metals in Pb chemical reagents. Saturated aqueous solution of hydrogen sulfide colorimetric detection range is 0. 3��g/mL ~ 2��g/mL (Pb), sulfide-glycerol colorimetric detection range is 0. 4��g/mL ~ 3��g/mL (as Pb).

GB/T 9735-2008: Chemical reagent -- General method for the determination of heavy metals

---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 heavy metals ICS 71.040.30 G60 National Standards of People's Republic of China Replacing GB/T 9735-1988 General method for determination of heavy metals Chemicals (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 9735-1988 "General method for the determination of heavy metals in chemical reagents," compared with the GB/T 9735-1988 Main Changes are as follows. --- Increased sodium sulfide - Determination of Heavy Metal glycerol method (Excerpts Chapter 1, Chapter 5). 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. Guangzhou Chemical Reagent Factory. The main drafters of this standard. Yu Xiaoqi, Fuqiong Lian, Liu Chao Yuan. This standard was first published in 1988. General method for determination of heavy metals Chemicals

1 Scope

This standard specifies the acetic acid in the medium heavy metals into sulfides with the general method of visual colorimetric assay. This standard applies to the determination of heavy metals in the lead in terms of the chemical reagent. Colorimetric detection range for hydrogen sulphide saturated aqueous 0.3μg/mL ~ 2μg/mL (as Pb); sodium sulfide - Glycerin colorimetric detection range of 0.4μg/mL ~ 3μg/mL (Pb).

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)

3 PRINCIPLE OF THE METHOD

Heavy metal ions and negative ions generated through a divalent sulfur sulfide precipitation in acid medium. Low content of heavy metal elements to form a stable Given dark suspensions, for visual colorimetric determination of heavy metals.

4 Reagents

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, the experiment Water should be consistent with GB/T 6682 water in three specifications, are used in mass fraction in% of the solution.

5 Determination

5.1 Colorimetric hydrogen sulphide saturated aqueous Sampling according to product standards and the preparation of test solution (pH value of the test solution was adjusted to 4 if necessary), acetic acid solution was added 0.2mL (30%), diluted to 25mL, 10mL of water was added a saturated hydrogen sulfide freshly prepared, shake, place 10min. The standard solution was dark and Comparison of colorimetric solution. Preparation of the standard color solution containing a predetermined ratio of the amount taken is lead (Pb) and the amount of the standard solution of the substrate (if the sample solution containing no substrate or substrate No effect on the determination of the presence, it does not add), with the same volume of test solution at the same time the same treatment. 5.2 Sodium sulfide - Glycerin colorimetry 5.2.1 sulfide - Preparation of glycerol solution Weigh 5g mixture of sodium sulfide, dissolved in 10mL water and 30mL glycerol, protected from light seal, valid for one month. 5.2.2 Determination Sampling according to product standards and the preparation of test solution (pH value of the test solution was adjusted to 4 if necessary), acetic acid solution was added 0.2mL (30%), diluted to 25mL, 0.1mL sodium sulfide was added - glycerol solution, shake, place 10min. Dark standard colorimetric solution was

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 9735-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 9735-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 2 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 9735-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 9735-2008_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 9735-2008?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 9735-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.