Question: 7. A client has submitted a sample for the analysis of Hydrogen Cyanide (HCN) in air. They have sampled using a calibrated pump at 0.5L/min

7. A client has submitted a sample for the analysis of

7. A client has submitted a sample for the analysis of Hydrogen Cyanide (HCN) in air. They have sampled using a calibrated pump at 0.5L/min for a total of 8 hours. The sampled air has been passed through a sorbent bed containing a molecular sieve which has adsorbed all of the HCN. Once the sample arrived at the lab, it was solvent desorbed using 10mL of deionized water (DI) at a desorption efficiency (DE) of 90%. The extract was analyzed via ion chromatography and a concentration of 4ng/uL was detected. A) What is the concentration of HCN in the client's air in 1gg/m3 ? B) What is the concentration of HCN in ppm in air (@ standard temperature and pressure)

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