asi took 1 gram of sample digested with nitric acid then completed the volume to 50 ml dand the result was given as 0,5 ppb how to convet it to µg/g
ppb can be by volume or by mass (weight). If the ppb is by weight then
1000 ppb = 1 ppm = 1 mg/kg
therefore, 1 ppb = 1/1000 mg/kg
or divide ppb by 1000 to get in mg/kg
Lets see.... The concentrations in ICP is the concentration measured in the solution.
0.5 ppb means 0.5ug/L
If you used 1g of sample and the final volume of solution that you had measured at ICP was 50mL then you should perform a multiplication of the solution concentration by the volume of the solution (in liters) and divide by the sample mass in grams.
Concentration in ug/g = (ug/L)*(L)/(g)
Concentration in ug/g = 0.5*0.05*1 = 0.025ug/g = 25ng/g
I agree with Dr. Erik Strub .
1-1000 parts-per-billion (ppb) by mass is the usual working range of ICP.
So 1ppb is = 1ug/ kg = 0.001 ug/g.
Kind regards
This link is help you https://www.ww.inorganicventures.com/sites/default/files/ICP%20Book.pdf
Dear Heba Hathout , in most research papers, I found that they are reporting metal ion release in "microgram/cm2' instead of pbb. But, results which was measured through ICP-MS, in pbb. Can you help me how to relate pbb to "microgram/cm2
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