direct isotope dilution analysis (DIDA), Chemistry

A solution contains an unknown amount of osmium at the µg/g level, or below. Chemically pure osmium (Os) may be separated from the solution, but the chemical yields are variable and low. The determination is done by direct isotope dilution analysis (DIDA). The isotopic abundances of 186Os and 190Os are 1.58 and 26.4%, respectively. 7.80 x 10-9 g of isotopically pure, stable 186Os is added to the unknown solution and mixed thoroughly, and then a small amount of pure Os is extracted from the mixture. With a mass spectrometer, the 190Os/186Os mass ratio in the extracted sample is found to be 7.40. Calculate the amount of Os originally present in the unknown solution.
Posted Date: 1/13/2013 2:49:13 PM | Location : Palestinian Territory, Occupied







Related Discussions:- direct isotope dilution analysis (DIDA), Assignment Help, Ask Question on direct isotope dilution analysis (DIDA), Get Answer, Expert's Help, direct isotope dilution analysis (DIDA) Discussions

Write discussion on direct isotope dilution analysis (DIDA)
Your posts are moderated
Related Questions
Q.   What are the requirements of drinking water? Explain various methods used for the sterilization of water for municipal supply. ANS. Requirements of drinking water: The e

An aqueous solution has a hydroxyl concentration of 1.75 x 10^-7mol/L. Find the concentration of hydrogen ions in this solution.

Isomers, which vary in the orientation of groups around the double bounded carbon atoms, are known as geometrical Isomers. It is also known as Cis-Trans Isomerism.

how find out the correct answer in multiple choice question regarding to complex molecule structure


Chemical formula for calcium pyrophosphate is ca 2, P 2 O 1.    The formula for ferric pyrophosphate will be: (1)  Fe 3 (P 2 O 1 ) 3

Ciprofloxacin is used to fight bacterial infections.

Determine the term - Photolithography  As used in manufacture of I.C.S, it is the process of transferring geometrical shapes on a mask to surface of a silicon wafer. Photomask

(i) How would you account for the following: (a) The transition elements exhibit high enthalpies of atomization. (b) The 4d and 5d series of the transition metals have more

Q. Effect of substituting emulsifying agents? i) Make A starch gel with ½ T (tablespoon) of cornstarch add ½ cup of water. Cool the gel. Take 2 T of this gel and add it to th