The thread seems fine to me. Asked a reasonably specific question that hasn't been answered in the long (yet strangely empty) enviro chem thread. Though I guess you one-thread, dead puppy Nazis might disagree...
The tests for contaminants are usually very similar to NPK/pH tests. Make an extraction of a soil sample. Add reagant A, then reagant B; compare to color chart. Know how to use a spec 20 on a sample and then compare that to a curve to find the concentration of the pollutant. Most tests in this event I would expect to be colorimetric. Also, know that a lot of contaminants are just trace nutrients at larger than normal concentrations; others are just heavy metals. I know there are some expensive testing kits that include testing for pollutants such as ferric iron, mercury, etc., but really if I were you, I'd be cheap and just be able to do general labs or NPK tests and learn how to do a written lab quickly and accurately.
Events: Ecology, Herpetology, Cell Bio, Entomology, Sounds of Music, Circuit Lab, Chem Lab, Disease Detective, Dynamic Planet, Five Star, EggONaut, Enviro Chemistry, Fermi, Quantum Quandaries!
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