Research Of Test Method For Hexavalent Chromium In Electronic Communication Products

As the needs of technology and product features, now part of the material composition of electronic communication products containing hexavalent chromium and other hazardous substances. These toxic and hazardous substances containing hexavalent chromium in electronic communication products in the waste after, if disposed of improperly, not only causes environmental pollution, can also cause waste of resources. Therefore, for the electronic information industry have introduced a variety of environmental policies. The European Union in January 2003 issued a "restricted electrical and electronic equipment directive of certain hazardous materials" (RoHS) to require that toxic and hazardous substances (lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers)in electrical and electronic products must meet the RoHS directive limit requires from 1 August 2006 into the EUFebruary 28,2006 Ministry of Information Industry (now Ministry of Industry and Information Technology) and the seven ministries and commissions of State Council jointly issued the " Measures for Administration of the Pollution Control of Electronic Information Products " (hereinafter referred to as " Measures"), put forward demands for the electronic information products entering the Chinese market from the aspect of environmental protectionresource conservation. Focusing on controlling to use lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers six toxic and hazardous substances in electronic information products. Therefore, it is very important to how to test concentration of contain toxic and harmful substances accurately such as hexavalent chromium in electronic communication products and to use a suitable detection method.According to test technology research of hexavalent chromium in current electronic information products at home and abroad,this paper put forward problem and flaw of hexavalent chromium testing method in electronic communication products at the present time, analyze reason of problem and flaw of hexavalent chromium testing method in electronic communication products, utimately we can obtain solution project of hexavalent chromium testing method in electronic communication products.this paper provide theoretical basis of hexavalent chromium testing method, continuously strengthen management level and provide help to access to international markets as soon as possible for the majority of Chinese electronics enterprises and whole Chinese electronic industry.This paper also hope to promote updating of Chinese electronic industry chain and realize green electronics chain goals according to test method research of hexavalent chromium in electronic communication products. This paper research focuses on test method of hexavalent chromium disaseembly sampling, pre-treatment and chemical testing in chemical instrument. This papay involves analysis of chemical, mechanical electronics, electronic communications other fields of technical knowledge, the main research Work can be summarized as follows:1.Introduce research background and significance of hexavalent chromium testing method in electronic communication products2. Research basic feature,existing way and basic information of hexavalent chromium testing method in electronic communication products.3. Research deeply current hexavalent chromium test method in electronic communication products including disassembly sampling, pretreatment and chemical instrument test. Put forward problem and flaw of hexavalent chromium testing method in electronic communication products at the present time.4. Analyze reason of problem and flaw of hexavalent chromium testing method in electronic communication products, obtain solution project of hexavalent chromium testing method according to a large number of tests of hexavalent chromium and verify the effective solution project.This paper is divided into five chapters, the first chapter is the introduction and Chapter V, respectively, the direction of future research prospects, second, third, fourth is the core chapters of this thesis, introduct respectively basic information of test methods for hexavalent chromium, problem and flaw of hexavalent chromium testing method, solution project of hexavalent chromium testing method,verify the solution project and other aspects.