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GB/T 23991-2009: Determination of soluble harmful elements in the paint
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 23991-2009 | English | 189 |
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Determination of soluble harmful elements in the paint
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GB/T 23991-2009
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Basic data | Standard ID | GB/T 23991-2009 (GB/T23991-2009) | | Description (Translated English) | Determination of soluble harmful elements in the paint | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G50 | | Classification of International Standard | 87.040 | | Word Count Estimation | 8,844 | | Date of Issue | 2009-06-02 | | Date of Implementation | 2010-02-01 | | Quoted Standard | GB/T 6682 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 8, 2009 (No. 148 overall) | | 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 coating of soluble harmful elements (antimony, arsenic, barium, cadmium, chromium, lead, mercury and selenium) content determination method. This standard applies to a variety of coatings. | GB/T 23991-2009: Determination of soluble harmful elements in the paint---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 soluble harmful elements in the paint
ICS 87.040
G50
National Standards of People's Republic of China
Determination of soluble paint content of harmful elements
Posted 2009-06-02
2010-02-01 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 paint pigment.
This standard was drafted. CNOOC Changzhou coating Chemical Research Institute.
The main drafters of this standard. Huang Ning.
Determination of soluble paint content of harmful elements
1 Scope
This standard specifies the method for the determination of soluble paint harmful elements (antimony, arsenic, barium, cadmium, chromium, lead, mercury and selenium) content.
This standard applies to all kinds of coatings.
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)
Principle 3
With 0.07mol/L hydrochloric acid solution treatment of the coating after drying, using suitable analytical detection limit of the test solution was quantitatively measuring instrument soluble
The content of the element.
4 Reagents
Analysis and testing use only recognized as analytical reagents, water used in line with GB/T 6682 in the three water requirements.
4.1 HCl. about 37% (by mass) density of about 1.18g/mL.
4.2 hydrochloric acid solution. 0.07mol/L.
4.3 hydrochloric acid solution. approximately 2mol/L.
4.4 nitric acid solution a 1. 1 (volume ratio).
4.5 antimony, arsenic, barium, cadmium, chromium, lead, mercury, selenium standard stock solution. a concentration of 100mg/L or 1000mg/L.
5. Apparatus
Common laboratory equipment as well as some of the following equipment.
5.1 The detection limit appropriate (see Chapter 8) analytical instruments. such as atomic absorption spectroscopy, inductively coupled plasma atomic emission spectrometer.
5.2 crushing equipment. shredders, scissors and so on.
5.3 stainless steel metal sieve. aperture of 0.5mm.
5.4 Balance. Precision 0.1mg.
5.5 Heating and stirring device. the device should be in a constant temperature (37 ± 2) ℃ with continuous auto stirring, stir the outer layer should be teflon or glass
Glass. It can also be used in a constant temperature (37 ± 2) ℃ in shaking water bath.
5.6 pH meter. accuracy of ± 0.2pH units.
5.7 membranes (for water). Aperture 0.45μm.
5.8 flask. 25mL, 50mL, 100mL like.
5.9 Pipette. 1mL, 2mL, 5mL, 10mL, 25mL, 50mL and the like.
5.10 series of chemical containers. total capacity of hydrochloric acid solution (4.2) the volume of the extraction agent 1.6 to 5.0 times.
5.11 glass or Teflon plate.
All glassware, sample containers, stirring, glass or Teflon boards are required before using a nitric acid solution (4.4) soaked
24h, then washed with water and dried.
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