I am a retired chemist with 40 years of laboratory experience in the following fields: Environmental Analytical Chemistry - extraction, concentration and analysis of trace organics in water, air and soil. Method development and validation Industrial Hygiene - sampling and analysis methods for hazardous materials in the workplace including Organic chemicals, Inorganic chemicals, Asbestos and particulates Petroleum and Petrochemical - analysis and characterization of petroleum products, petrochemicals and environmental contaminants Technical Support for customers of a major Canadian Scientific supplier in the fields of: Gas Chromatography Liquid Chromatography Sample preparation techniques Analytical Chemical Standard Materials and Laboratory Accreditation Catalog and brochure preparation