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1、电子电气产品中有毒有害物质检测方法Determination of Levels of Six Regulated Substances (Lead, Mercury, Hexavalent Chrominum, Polybrominated Biphenyls, Polybrominated Biphenyl Ether) in Electrotechnical Products,郑建国 博士 Dr. Zheng Jianguo Guangdong Entry-Exit Inspection b) metal materials made from aluminium, iron and z
2、inc matrices and c) electronics. The sample is digested and heated to exhausting the acids, then diluted properly. Ionic Cd in the sample solution reacts with KBH4 and generates volatile gas, which is introduced to atomizer with carrier gas (Ar). The content of cadmium is determined on the basis of
3、fluorescence intensity of the element. Ionic Pb() in the sample solution is oxidized into Pb() by potassium ferricyanide, then reacts with KBH4 and generates volatile hydride PbH4, which is introduced to atomizer with carrier gas (Ar). The content of lead is determined on the basis of fluorescence i
4、ntensity of the element.,15 methods in SN series standards for RoHS have been finished:,12、Determination of Lead, Cadmium, Chromium and Mercury in electrical and electronic equipmentInductively coupled plasma atomic emission spectrometry The samples of polymer materials (such as PP, PE, PS, ABS, PVC
5、, etc.) and electronics (such as glasses and ceramics, etc.) from Electronic and electrical equipment were digested under pressure with nitric acid, tetrafluoroborate solution and hydrogen peroxide in a tightly sealed PTFE vessel which was then put into the corrosion resisting steel pressure dissolu
6、tion can. The pressure dissolution can as a whole was heated at 180 for 4h in a constant temperature heating oven. The samples of metallic materials (such as iron alloys, copper alloys, aluminum alloys, zinc alloys and solder alloys, etc.) from Electronic and electrical equipment were digested by he
7、ating with reflux cooler and absorption vessels. The samples of polymer materials and electronics from Electronic and electrical equipment were digested under pressure with microwave sample preparation system. The method for the simultaneous determination of Pb, Cd, Cr, Hg in polymer materials, meta
8、llic materials and electronics from Electronic and electrical equipment have been developed,15 methods in SN series standards for RoHS have been finished:,、Determination Of Mercury In Electrical And Electronic Equipment Cold Vapor Atomic Absorption Spectrometry This standard provides the procedure f
9、or the determination of materials used in Electrical And Electronic Equipment. These materials are polymer materials, metal materials and electronics. Metal materials in electrotechnical equipment are treated by traditional digestion using acids. Other materials, such as polymers and electronics, we
10、re digested with acids, in microwave oven or in a sealed and high pressure autoclave. The mercury in the digestion solution is reduced to the atomic state before it is analyzed, then mercury is determined by Cold Vapor Atomic Absorption Spectrometry.,15 methods in SN series standards for RoHS have b
11、een finished:,14、Technical Requirements for the Conformity Assessment of Certain Hazardous Substances in Electrical and Electronic Equipment This standard specifies the general technical requirements for the conformity assessment of certain hazardous substances in electrical and electronic equipment
12、s. For the purpose of determining the conformity of the products with relevant laws and regulations and evaluating the validity of the test results, the following items should be assessed and certified to be fully in compliance with specific technical requirements.,15 methods in SN series standards
13、for RoHS have been finished:,、Procedures of the mechanical disjointment for the determination of regulated substances in electrotechnical products This part specifies the procedures and requirements of the mechanical disjointment of electrotechnical products into test units for chemical determinatio
14、n of certain regulated substances. This part deals with the mechanical disjointment of electrical and electronic products (including their parts and components) with rated voltage not exceeding 1 000 volts for alternating current and 1 500 volts for direct current;,Thank you for your attention!,This
15、 part deals with but is not limited to the following categories of products: large household electrical appliances small household electrical appliances information technology equipment and telecommunication equipment Consumer equipment Lighting equipment Electrical and electronic tools Toys, leisure and sports equipment Medical devices Monitoring and control instruments Automatic dispensers,
电子电气产品中有毒有害物质检测方法
