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A Novel Trace Elemental Analysis of Potassium Phosphates

Rohman, Joshua
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1459243950

Abstract Details

2016, MS, University of Cincinnati, Arts and Sciences: Chemistry.
In the chemical manufacturing industry, it is critical to have an understanding of not only the major components in the product of interest but also the contaminants or trace components. Potassium phosphates are common to the food and industrial markets, so trace metals are of particular concern in order to protect people as well as processes and equipment from their effects. This can be a particularly difficult task due to the samples having a high dissolved solids content which can cause issues with ICP analyses. In this study, a method is developed to digest anhydrous tetrapotassium pyrophosphate and analyze for trace metals by inductively coupled plasma optical emission spectrometry (ICP-OES). The analytes of interest were As, Cr, Fe, Mn, Ni, Pb, and Zn. Reproducibility was performed; however, spike recovery proved to be a better measure of success due to the majority of the analytes being near or below the method detection limit. The recoveries for all analytes ranged from 96.9-102.4%. Although the recovery was successful, the reproducibility of the analytes above the method detection limit had relative standard deviations mostly greater than 10%, which could be a sign that the solid sample was not homogenous since prior studies with liquid tetrapotassium pyrophosphate had relative standard deviations below 5%
William| Heineman, Ph.D. (Committee Co-Chair)
Julio Landero Figueroa|, Ph.D. (Committee Co-Chair)
Hairong Guan, Ph.D. (Committee Member)
Thomas Ridgway, Ph.D. (Committee Member)
25 p.
Analytical Chemistry
potassium phosphate; ICP-OES; aqua regia; heavy metals

Recommended Citations

Citations

  • Rohman, J. (2016). A Novel Trace Elemental Analysis of Potassium Phosphates [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1459243950

    APA Style (7th edition)

  • Rohman, Joshua. A Novel Trace Elemental Analysis of Potassium Phosphates. 2016. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1459243950.

    MLA Style (8th edition)

  • Rohman, Joshua. "A Novel Trace Elemental Analysis of Potassium Phosphates." Master's thesis, University of Cincinnati, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1459243950

    Chicago Manual of Style (17th edition)

ucin1459243950
684
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This open access ETD is published by University of Cincinnati and OhioLINK.