Transition elements
Read our general notes on Risk Assessment
I'm really stuck on the calculations for percentage of iron in iron tablets using my colorimetry results.
I know I have to do a calibration curve, but how does that help determine the iron present?
100408
Corrie writes .....
Your calibration curve should show you how the absorption readings on your colorimeter depend on the concentration of iron in your made up solutions of known iron concentration. If the absorption readings varied linearly (i.e. double the absorption, double the concentration), then a calibration curve would not be needed, but most colorimeters are not that accurate, so you get a curve.
Thus, given a colorimeter absorption reading from a solution of your iron tablets, you can read the concentration of iron in the solution from your calibration curve.
Risk assessment
Before attempting any practical work based on the advice and suggestions on this website, you must do the following. Identify any hazards, assess the risks from these hazards, and then decide appropriate control measures to reduce the risks. You must have these approved by those in authority in your school or college laboratory. Do not rely on what is said on this website.
For further guidance see our tutorial on Risk Assessment.
Rate this page or react
Share your views on this page, 0 ratings so far
updated: 10 April 2008
