Chemical Forums
Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: Pjedi on December 15, 2012, 06:34:22 AM
-
Hi, For a certain experiment I need to weigh enriched stable isotopes very accurately. Because of the high cost of this isotopes I can't take any bigger amount to weigh them accurately.
In my case, I need 4,173 mg of Ni 62 which is enriched for 98,2 %. I have trained to get the weight accurately using normal Ni and a satorius E2, which s able to measure weight accurately until 1 µg . So far the weight has an error for at least 10%.
Did anyone have the same problem? I would appreciate all kind of hints.
-
In my case, I need 4,173 mg of Ni 62 which is enriched for 98,2 %. I have trained to get the weight accurately using normal Ni and a satorius E2, which s able to measure weight accurately until 1 µg . So far the weight has an error for at least 10%.
How did you measure / quantify this error?
For a certain experiment I need to weigh enriched stable isotopes very accurately.
How accurately do you need to measure.
-
In my case, I need 4,173 mg of Ni 62 which is enriched for 98,2 %. I have trained to get the weight accurately using normal Ni and a satorius E2, which s able to measure weight accurately until 1 µg . So far the weight has an error for at least 10%.
How did you measure / quantify this error?
I just picked some natural abundant Ni and some weighing scales and started repeating the same experiment 5 times.
For a certain experiment I need to weigh enriched stable isotopes very accurately.
How accurately do you need to measure.
I want error below 2%
-
For that level of accuracy you will need a 6 decimal place balance (Sartorius ME36 or equivalent)