scholarly journals The precision of a direct-reading flame photometer for the determination of sodium and potassium in biological fluids

1953 ◽  
Vol 55 (2) ◽  
pp. 214-220 ◽  
Author(s):  
E. R. Holiday ◽  
J. R. K. Preedy
Keyword(s):  
Biological Fluids ◽  
Direct Reading ◽  
Flame Photometer ◽  
Sodium And Potassium

Emission Spectrometric Determination of Trace Elements in Biological Fluids

1971 ◽  
Vol 25 (1) ◽  
pp. 53-56 ◽  
Author(s):  
William Niedermeier ◽  
James H. Griggs ◽  
Richard S. Johnson
Keyword(s):  
Experimental Data ◽  
Trace Elements ◽  
Sample Preparation ◽  
Blood Serum ◽  
Biological Fluids ◽  
Spectrometric Method ◽  
Direct Reading ◽  
Iron Aluminum ◽  
Dc Arc

An emission spectrometric method of analysis is described, in which trace quantities of copper, iron, aluminum, barium, manganese, nickel, cesium, tin, strontium, chromium, zinc, lead, molybdenum, and cadmium were determined in blood serum. The sample preparation, starting with 2.0 ml of blood serum, is discussed in detail. The source of excitation was a 10 A dc arc. Quantitation was achieved with a direct reading emission spectrometer. The metal concentration, in micrograms per 100 ml of blood serum, was calculated from the experimental data by means of a computer.

Application of Inductively-Coupled Plasma Excitation Sources to the Determination of Trace Metals in Microliter Volumes of Biological Fluids

1973 ◽  
Vol 19 (8) ◽  
pp. 807-812 ◽  
Author(s):  
Richard N Kniseley ◽  
Velmer A Fassel ◽  
Constance C Butler
Keyword(s):  
Inductively Coupled Plasma ◽  
Biological Fluids ◽  
Spectroscopic Technique ◽  
Direct Reading ◽  
Sample Handling ◽  
Inductively Coupled ◽  
Multielement Determination ◽  
Plasma Excitation ◽  
Trace Constituents

Abstract The inductively coupled plasma is a promising excitation source for the simultaneous multielement determination of trace (nanogram per milliliter) elements in biological fluids. As little as 25 µl of sample fluid (whole blood, serum, or plasma) has been used, with essentially no sample preparation. This technique offers significant advantages over other methods requiring considerable sample handling that may greatly increase the danger of contamination or loss of trace constituents. The precision of the method is typically ±3 to 5%. Because this is an emission spectroscopic technique, a multichannel direct-reading spectrometer allows simultaneous multielement analyses to be made on microliter samples.

Computerized Computation of Emission Spectrometric Data of Trace Elements in Biological Fluids

1968 ◽  
Vol 22 (5) ◽  
pp. 552-557 ◽  
Author(s):  
Richard S. Johnson ◽  
William Niedermeier ◽  
James H. Griggs ◽  
Janice F. Lewis
Keyword(s):  
Trace Elements ◽  
Experimental Error ◽  
Functional Relationship ◽  
Empirical Equation ◽  
Biological Fluids ◽  
Transcendental Equation ◽  
Direct Reading ◽  
Spectrometric Data ◽  
Entire Procedure

It has been found that a four-constant generalized transcendental equation can be used to relate emission spectroscopy data to concentration of trace elements in biological fluids. For each element the constants in the- empirical equation are evaluated by a three-step successive approximation, based on the data from standards. The functional relationship, which gives values well within the range of experimental error, is then used in the quantitative determination of the concentration of each of 17 trace elements in unknown samples. In these studies a Jarrell—Ash direct reading spectrometer was used. The entire procedure of data reduction and concentration printout was done on a digital computer.

Determination of Sodium and Potassium in Lithium Metal by Flame Photometer

1951 ◽  
Vol 23 (3) ◽  
pp. 482-483 ◽  
Author(s):  
W Inman ◽  
R Rogers ◽  
J Fournier
Keyword(s):  
Lithium Metal ◽  
Flame Photometer ◽  
Sodium And Potassium
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