Question 2 a) You work for an environmental laboratory conducting screening of wastewater for potential contaminants. The laboratory currently possesses a reverse-phase liquid chromatograph but is considering purchase of an ion

chromatograph. Provide an argument for the laboratory's procurement officer that purchasing an ion chromatograph would extend the laboratory's analytical capabilities. Your answer should make use of appropriate annotated diagrams. b) You are an analytical chemist in a forensic laboratory. You have been tasked with analysing fire debris for volatile hydrocarbons that might be indicative of a chemical accelerant. i. Which mode of chromatography would you recommend for this purpose, and why? Justify your answer. ii. The evidence submitted is a swatch of carpet in a sealed container. How would you sample potential volatile hydrocarbons from this material? Justify your approach. c) Using media or internet sources, identify and describe a "real-world" problem in which gas chromatography, liquid chromatography, or ion chromatography was used to achieve separation of analytes in a mixture.