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Automated Flame Photometric Determination of K2O in Fertilizers by Neuner, Terry E; Pickett, Edward E; Gehrke, Charles W; Wippler, John F is a Chemistry article available to read on EtoBox.

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## Abstract The well known chemical interference of phosphorus on the emission of potassium in cool flames was verified and found to cause small but significant error in using the official final action AOAC method of analysis. This effect can be greatly reduced by incorporating the use of lanthanum along with the internal standard, lithium. Lanthanum has been shown to reduce the chemical interference of phosphorus by chemical bonding without affecting potassium or lithium emission characteristics. The resulting manifold can be used to analyze samples at the rate of 6 0 / h r with no significant interference.

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Author

Neuner, Terry E; Pickett, Edward E; Gehrke, Charles W; Wippler, John F

Publisher

Association of Official Analytical Chemists; The Journal of AOAC International; AOAC International; Oxford University Press (OUP) (ISSN 1060-3271)

Published

1975

Language

EN

Field

Chemistry (Physical Sciences)