SC CHEM 321 - Measuring the Concentration of Sodium and Potassium in Natural Matrices Using ICP-OES (5 pages)

Previewing pages 1, 2 of 5 page document View the full content.
View Full Document

Measuring the Concentration of Sodium and Potassium in Natural Matrices Using ICP-OES



Previewing pages 1, 2 of actual document.

View the full content.
View Full Document
View Full Document

Measuring the Concentration of Sodium and Potassium in Natural Matrices Using ICP-OES

79 views


Pages:
5
School:
University Of South Carolina-Columbia
Course:
Chem 321 - Quantitative Analysis

Unformatted text preview:

Chemistry 321L 02M Post Lab Experiment 4 Measuring the Concentration of Sodium and Potassium in Natural Matrices Using ICPOES By Cameron Kahn 12 February 2014 TA Muditha Dias 1 flow chart 1000ppm solution 4ppm calibration was prepared by diluting 8ppm 01mL of K and Na stock calibration was solution to 25mL prepared by diluting 02mL of K and Na stock solution to 25mL 8ppm calibration was prepared by diluting 2mL of K and Na stock solution to 25mL 2ppm calibration was prepared by diluting 05mL of K and Na stock solution to 25mL 4ppm calibration was prepared by diluting 1mL of K and Na stock solution to 25mL Ocean Spray 62 5 ppm of 15mg Na in 24mL of Ocean Spray is diluted 100 fold to 625ppm 792 ppm of 190mg K in 24mL of Ocean Spray is diluted 100 fold to 7 92ppm V8 Splash 62 5 ppm of 15mg Na in 24mL of V8 Splash is diluted 100 fold to 625ppm Blank A blank is prepared by the same dilution factors as the other two samples 1 Blank Output 83 33 ppm of 20mg K in 24mL of V8 Splash is diluted 100 fold to 833ppm All eight of the solutions are then injected into the ICPOES K 4044 8602 K 7664 1630 Na 5889 2316 Na 5895 1512 The blank appears to contain detectable sodium and potassium because the output was positive for both potassium and sodium in each of the samples 3 Calibration curve Counts per second Calibration curve 18000 16000 14000 12000 10000 8000 6000 4000 2000 0 K 4044 Linear K 4044 f x 1854 91x 1049 88 R 11529 86x 1959 03 f x R 1 K 7664 Linear K 7664 Na 5889 f x 70 39x 7978 79 R 0 84 f x 500 07x 1473 19 R 1 Linear Na 5889 Na 5895 0 1 2 3 4 5 Concentration ppm 6 7 8 9 Linear Na 5895 4 Standard error of regression equations Regression Equation Standard Error Calculated in Excel K 4044 K 7664 Na 5889 Na 5895 109 60 83 64 305 94 393 51 5 analyte K 4044 K 7664 Na 588 9 Na 589 5 analyte K 4044 K 7664 Na 588 9 Na 589 5 V8 counts 8394 2261 Background level average background level 0 723 137ppm 5 9 1 58 3117 0 76 2294 0 67 O S Background counts level average background level



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view Measuring the Concentration of Sodium and Potassium in Natural Matrices Using ICP-OES and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Measuring the Concentration of Sodium and Potassium in Natural Matrices Using ICP-OES and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?