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GB/T 22598-2008 English PDF

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GB/T 22598-2008: Water treatment chemicals -- Determination of lead content
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Basic data

Standard ID GB/T 22598-2008 (GB/T22598-2008)
Description (Translated English) Water treatment chemicals -- Determination of lead content
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G76
Classification of International Standard 71.040.40
Word Count Estimation 5,575
Date of Issue 2008-12-23
Date of Implementation 2009-09-01
Quoted Standard GB/T 602; GB/T 6682
Regulation (derived from) National Standard Approval Announcement 2008 No.21 (Total No.134)
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 method of water treatment chemicals in atomic absorption spectrometry lead content. This standard applies to chemical determination of lead content in the test solution in the range 0. 5��g ~ 9. 0��g water treatment.

GB/T 22598-2008: Water treatment chemicals -- Determination of lead content

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Water treatment chemicals. Determination of lead content ICS 71.040.40 G76 National Standards of People's Republic of China Water treatment chemicals Determination of lead content Posted 2008-12-23 2009-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee of Chemical Water Treatment Chemicals Branch (SAC/TC63/SC5) centralized. This standard is drafted by. CNOOC Tianjin Chemical Research & Design Institute. The main drafters of this standard. Li Lin, Shao Hongqian, Bai Ying. Water treatment chemicals Determination of lead content

1 Scope

This standard specifies the method of water treatment chemicals in atomic absorption spectrometry of lead content. This standard applies to chemical test solution lead content in the range of 0.5μg ~ 9.0μg the water treatment.

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 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD)

3 Method summary

The sample was added nitric acid and hydrogen peroxide, the sample is dissolved in the lead, then the determination of lead content by atomic absorption spectrometry.

4 Reagents and materials

The reagents used in this standard, unless otherwise specified, shall use analytical reagent and in line with GB/T 6682 stipulated two of water. Impurity standard solution at the time did not indicate other requirements, according to the provisions of GB/T 602 of the test preparation needed. Safety Tips. strong acids used in this standard is corrosive, should pay attention. When contacted, rinse with plenty of water, avoid inhalation or Contact with the skin. 4.1 Hydrogen peroxide. pure class distinctions. 4.2 nitrate (excellent pure) solution. 1 + 1. 4.3 nitrate (excellent pure) solution. 1 + 199. 4.4 lead standard stock solution. 0.1mg/mL. 4.5 Lead standard solution. 1μg/mL. Accurate Pipette 5.0mL lead standard stock solution was placed in 500mL volumetric flask, dilute nitric acid solution (4.3) to the mark. this Now with the existing solution.

5 instruments and equipment

5.1 Atomic absorption spectrometer. with graphite furnace control device, lead hollow cathode lamp, deuterium lamp or Zeeman background correction means. 5.2 argon cylinders. 5.3 20μL micro quantitative samplers. Note. All glassware must be cleaned with a solution of nitric acid (4.2), then wash with water. Step 6 Analysis 6.1 Preparation of test solution Accordance with the relevant provisions of the standard product weighed amount of sample is placed in 250mL beaker, dissolved in water to 100mL, carefully added 2.0mL 2.0mL solution of hydrogen peroxide and nitric acid (4.2), the solution was heated and evaporated to a volume of about 40mL, cooled to room temperature, the solution after Full transferred to 100mL volumetric flask, add water to the mark.

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