With the help of a graduate student, develop methods based on electrothermal vaporisation (ETV) coupled to ICP-OES for the direct multi-element analysis of food, with a focus on food items, such as rice-based or soy-based products that may contain significant levels of toxic elements. If there is time, develop a method allowing the direct speciation analysis of elements, whose chemical form determines toxicity, in the solid so as to determine the portion that is actually toxic.