Yes, I just double checked with certificate of analysis. The lamp working current is: 10 mA, Arsenic lamp from Varian,part#5610100300. It is a certified lamp, Serial No.06L14**. Recommended working current: 10 mA, Maximum current : 12 mA.
For the Potassium iodide (KI), I tried several concentrations range from (5%, 10%, 20%, weigh 5-20 g KI in 100 ml H2O) before. Now I chose the 10% KI.
This method was developed by myself for the Arsenic(As)/Antimony (Sb) testing of petfood in our lab last year. I used the EPA Method 7061A and 7062 as reference. pls see the attachment for more details.
At last, I want to emphasis one point: Different instruments have specific parameters. So my testing parameters may not match others' testing requirements.
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原文由 [ you had used this method for your testing? "Lamp Current" =10mA? waht Lamp? "10% KI"?
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