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SN/T 4240-2015 PDF English

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SN/T 4240-2015: Electrical and electronic products. Determination of lead and cadmium in metal parts surface nickel-plated. Inductively coupled plasma mass spectrometry
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SN/T 4240-2015English169 Add to Cart 3 days [Need to translate] Electrical and electronic products. Determination of lead and cadmium in metal parts surface nickel-plated. Inductively coupled plasma mass spectrometry

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Basic data

Standard ID SN/T 4240-2015 (SN/T4240-2015)
Description (Translated English) Electrical and electronic products. Determination of lead and cadmium in metal parts surface nickel-plated. Inductively coupled plasma mass spectrometry
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard L04
Classification of International Standard 31.020
Word Count Estimation 7,792
Date of Issue 2015-05-26
Date of Implementation 2016-01-01
Quoted Standard GB/T 6682
Regulation (derived from) State Quality-Inspection-accreditation [2015] No.224
Issuing agency(ies) General Administration of Customs
Summary This standard specifies the inductively coupled plasma Electronic and Electrical Products metal parts nickel-plated layer of lead and cadmium content of mass spectrometry methods. This standard applies to electrical and electronic products metal parts nickel-plated layer of lead, cadmium determination, other base metals nickel plating layer can also refer to use.

SN/T 4240-2015: Electrical and electronic products. Determination of lead and cadmium in metal parts surface nickel-plated. Inductively coupled plasma mass spectrometry





---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.
Electrical and electronic products.Determination of lead and cadmium in metal parts surface nickel-plated.Inductively coupled plasma mass spectrometry People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard Electrical and electronic products, metal parts, surfaces Determination of lead and cadmium in nickel plating Inductively coupled plasma mass spectrometry Released on.2015-05-26 2016-01-01 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued Entry and exit inspection and quarantine Industry Standard Electrical and electronic products, metal parts, surfaces Determination of lead and cadmium in nickel plating Inductively coupled plasma mass spectrometry China Standard Press Publishing First edition in January.2016

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Certification and Accreditation Administration. This standard was drafted. Ningbo Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China, Nanjing Entry-Exit Inspection and Quarantine Bureau, Guangdong Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this standard. Cao Guozhou, Liu Zaimei, Zhu Xiaoyan, He Chonghui, Xiao Qian. Electrical and electronic products, metal parts, surfaces Determination of lead and cadmium in nickel plating Inductively coupled plasma mass spectrometry

1 Scope

This standard specifies the method for the determination of lead and cadmium in the nickel-plated layer on the surface of metal parts of electronic and electrical products by inductively coupled plasma mass spectrometry. This standard is applicable to the determination of lead and cadmium in the nickel plating on the surface of metal parts of electrical and electronic products. use.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 6682 Analytical laboratory water specifications and test methods

3 Method summary

Nickel, lead and cadmium in the coating react with dilute hydrochloric acid to form hydrogen, and the degree of deplating is controlled by observing the generated bubbles, and then the inductor is used. The content of lead and cadmium in the deplating solution was determined by coupled plasma mass spectrometer (ICP-MS) internal standard method. According to the quality of deplating and the concentration of lead and cadmium in the deplating solution, The content of lead and cadmium in the coating was calculated.

4 reagents

4.1 Water, the first grade water specified in GB/T 6682. 4.2 Hydrochloric acid. excellent grade pure. 4.3 Nitric acid. excellent grade pure. 4.4 Anhydrous ethanol. excellent grade pure. 4.5 Hydrochloric acid solution (1 9). 4.6 Hydrochloric acid solution (2 98). 4.7 Nitric acid solution (5 95). 4.8 Lead, cadmium, tellurium and indium standard stock solution. 1000μg/mL. Commercially available certified standard solutions. 4.9 Lead and cadmium mixed standard solution 10μg/mL. Dilute lead and cadmium standard stock solution (4.8) to 1.0μg/mL with hydrochloric acid solution (4.6). 4.10 Indium and cesium mixed internal standard solution 1.0 μg/mL. The indium and hydrazine standard stock solution (4.8) was diluted stepwise with a hydrochloric acid solution (4.6) to 1.0 μg/mL.

5 Instruments and equipment

5.1 Inductively Coupled Plasma Mass Spectrometer (ICP-MS). 5.2 Electronic balance. Sensing amount 0.01mg. ...

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