Research On Detection Methods For Halogen Compounds And Heavy Metals In Engineering Plastics ABS

With the rapid development of the global information technology, electrical and electronic products (Electrical and Electronic Products) replacement faster and faster, while the electrical and electronic waste pollution has become more intensified. Most electrical and electronic products contain a variety of toxic and hazardous substances and waste in the use of the process on the environment and human health caused great harm.plastic ABS microwave established in chloride content and halogen compounds of lead, cadmium, chromium and other heavy metals detected digestion pre-treatment technology. Determine the optimum conditions for microwave digestion 7mLHNO3+ 2mLH2O2; digestion temperature was 210 ℃; digestion time was 60min.This paper established a microwave digestion-Ion chromatography detection methods for engineering plastics ABS fluoride, chloride, bromide content determination. And from the linear relationship between four sensitivity, precision and accuracy of the method were evaluated optimized to ensure the reliability of the method. For the production and testing provides an effective technical means.This topic using inductively coupled plasma mass spectrometry study the establishment of ABS plastic in V, Cr, Mn, Ni, Cu, Zn, Cd, Pb, Hg, Co dozens element analysis method for the simultaneous detection of metallic elements, greatly shortening detection limit, improve the detection efficiency for the production and quality control provides advanced technical means. Determination of the elements of the standard curve correlation coefficient of 0.9990 to 0.9999, and the detection limit was 0.02～ 0.16ng/kg, RSD<5%, the average recovery rate 92.9～98.4%. The method is accurate and reliable, can be used for engineering plastics and plastic products real sample detection and analysis of heavy metals.Research on this subject that the Government should actively cultivate environmental awareness of domestic enterprises and consumers, improve and perfect environmental regulations, technical standards and build a protective standard information publishing platform, and actively promote international certification. Meanwhile, China’s household electrical appliance enterprises should actively explore overseas market diversification, improve the technological level and R & D capabilities and establish a green supply chain and actively develop green export trade, the rational use of the relevant immunity ROHS directive and real focus on its dynamics.