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GB/T 23837-2009 English PDF

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GB/T 23837-2009: Industrial circulating cooling water -- Determination of aluminium -- Atomic absorption spectrometric methods
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Basic data

Standard ID GB/T 23837-2009 (GB/T23837-2009)
Description (Translated English) Industrial circulating cooling water -- Determination of aluminium -- Atomic absorption spectrometric methods
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G76
Classification of International Standard 71.040.40
Word Count Estimation 12,154
Date of Issue 2009-05-18
Date of Implementation 2010-02-01
Adopted Standard ISO 12020-1997, MOD
Regulation (derived from) PRC National Standard Approval Announcement 2009 No.6 (Total No.146)
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 for the determination of aluminum in industrial circulating cooling water ion atomic absorption spectrometry. This standard flame atomic absorption spectrometry applied to the aluminum industry for the determination of circulating cooling water content within the 5mg/L ~ 100mg/L range, graphite furnace atomic absorption spectrometry for industrial circulating cooling water content of aluminum 10��g/L ~ 100��g measured within the range of L/. Sample volume was 20��L. Higher concentrations can be determined by appropriately diluting the sample, or a smaller sample volume. This standard is also applicable to the determination of water and wastewater aluminum ions.

GB/T 23837-2009: Industrial circulating cooling water -- Determination of aluminium -- Atomic absorption spectrometric methods


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Industrial circulating cooling water. Determination of aluminium. Atomic absorption spectrometric methods ICS 71.040.40 G76 National Standards of People's Republic of China Industrial circulating cooling water - Determination of aluminum ions Atomic Absorption Spectrometry (ISO 12020.1997, Waterquality-Determinationofaluminium- Atomicabsorptionspectrometricmethods, MOD) Posted 2009-05-18 2010-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This revised standard adopts the International Standard ISO 12020.1997 "Water quality aluminum atomic absorption spectrometry" (in English). This standard is based on ISO 12020.1997 redrafted. For ease of comparison, the data are listed in Appendix A of this Article national standards A list of funds and control international standard clauses. And ISO 12020.1997 as compared to the present standard made the following technical corrections. --- Suitable for China's national conditions, emphasizing the GB/T 1.1 consistency, increasing the normative references; --- Canceled precision. For ease of use, the ISO 12020.1997 This standard also made the following editorial changes. --- The name of the standard was changed to "industrial cooling aluminum ions in water by atomic absorption spectrometry"; --- Use the decimal symbol instead of decimal symbol comma ",". ","; --- Delete foreword international standards; --- Delete international standards in Appendices A and B; --- Some of the statements apply to international standards to apply to our standard formulation. Appendix A of this standard is an informative annex. 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, Tianjin Pacific Technology Co., Ltd. The main drafters of this standard. Li Lin, Zhu Zhuanjun, Bai Ying, Shao Hongqian. Industrial circulating cooling water - Determination of aluminum ions Atomic Absorption Spectrometry

1 Scope

This standard specifies the method for determination of industrial circulating cooling aluminum ions in water by atomic absorption spectrometry. This standard flame atomic absorption spectrometry for aluminum Industrial circulating cooling water content was measured in the 5mg/L ~ 100mg/L range Set; graphite furnace atomic absorption spectrometry for industrial circulating cooling water content determination of aluminum in the 10μg/L ~ 100μg/L range, the sample A volume of 20μL. Higher concentrations can be determined by appropriate dilution of the sample or small sample volume. This standard is also applicable to the determination of water and waste aluminum ions.

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

3 Flame Atomic Absorption Spectrometry

3.1 Principle Addition of an acid in water samples and atomic absorption spectrometer inhaled nitrous oxide/acetylene flame measured at 309.3nm wavelength Absorbance and calculate the content of aluminum. The determination of total aluminum, 3.5.3 shall sample digestion. 3.2 Interference 3.2.1 The following ion concentrations shown in Table 1 over, interfere with flame atomic absorption spectrometry. Table 1 and the concentration of interfering ions Interfering ions concentration/(mg/L) Sulfate 10000 Chloride 10000 Phosphate 10000 Sodium 10000 K 10000 Magnesium 10000 Ca 10000 Iron 10000 Nickel 10000 Co 10000 Cadmium 3000 Lead 10000 Portland 200

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