IC dulutions

[Analyst2]

Hello,
I have a dilution question for IC.
I have ten Ions, separate 1000ppm standards. Trying to make one stock solution and percentages from that stock solution. A procedure calls for between 1,3 or 4 grams of standard up to 100mls of H2O. ( a total of 24 grams of the 1000 ppm standards) Would the concentration of each Ion be 1000*w (in grams)/100?
Example: 4 grams of Flouride 1000 ppm standard/100g = 4*1000/100= 40 PPM? The same for 1g or 3g?
The reason for the question is relating this to a 500 ppm standard for ICP. We dilute a premixed 21 element 500 ppm standard 10:1 to run on the ICP, but we still consider it 500 ppm instead of 50 ppm for calibration. Wouldn't it be the same for IC?
Thank you.

[tom jupille]

As long as you dilute samples and standards the same way (which is what I think you're doing with the ICP), it doesn't matter.

In the more general case, if you do a 100:4 dilution of a 1000 ppm standard, then what you are injecting is actually 40 ppm.