The Research On Detection Method Of Metal Elements In Solid Waste By ICP-MS

If solid waste is not correctly treated, some toxic elements will pollute rivers, lakes,oceans and the soil. This is called water and soil pollution. Due to metal elements not havingbiodegradable properties, once the elements get into the water and soil it’s very difficult toremove them. The elements will enrich the food chain of the organism before finally enteringhuman’s bodies; this is seriously harmful to people’s health.Therefore, it is of great significance for the protection of the environment to promote thesafe disposal of solid waste. This includes the realization of scientific management of solidwaste, the harmless disposal of solid waste and scientifically accurate monitoring of metalelements in solid waste.This paper systematically studies the current control standards of solid waste andresearch methods for these two substrates to establish a method for determining suitable solidwaste. Additionally this paper establishes a method for ICP-MS suitable for solid waste, andsolid waste leachate, and develops appropriate monitoring and analysis for the formulation ofChina’s policy.In order to study the solid waste metal elements by plasma mass spectrometry a thoroughreview of a large body of standard methods and documentation was made in order to identifythe experiment pre-processing conditions and measuring methods. The final determinationmethod was: when the amount of solid waste in the sample is0.100g then17kinds of metalelements (Ag、As、Ba、Be、Cd、Co、Cr、Cu、Mn、Mo、Ni、Pb、Sb、Se、Ti、V、Zn) can be detected with a limit of0.60mg/kg~7.2g/kg, and2.4mg/kg~28.8mg/kg. Ifthe solid waste leaching solution volume is25ml, under the method of17elementsthe detection limit was1.2μg/L~12μg/L and4.8μg/L~48μg/L.Advantages of this method include simple operation and it is suitable for inductivelycoupled plasma mass spectrometry determination of metal elements in solid waste.