http://mercuryanalyser.com/mercury-testing/mercury-analysis-in-water-the-purity-of-your-chemicals/ It is imperative to keep the background level under control otherwise you fail the QC automatically because of it. The high mercury background can come from the following sources:<br /><br /> Deionized water<br /> Hydrochloric acid<br /> Tin(II) chloride<br /> Bromine solution<br /> Hydroxylamine hydrochloride<br /> Containers<br /> Carrier gas – argon<br /> Your lab environment<br /> Personal hygiene<br /><br />How to lower the background<br /><br /> Use highest purity available for the chemicals<br /> Keep the concentrations as low as possible<br /> Use clean containers<br /> Boil your reductant and then purge it<br /> Filter your argon carrier gas<br /> Operate in environment<br /> Change gloves often to avoid cross contamination<br /><br />Part 1 of 2
