Ion-exchange separation and quantitative determination of dimethyl sulfoxide

1967 ◽  
Vol 26 ◽  
pp. 336-338 ◽  
Author(s):  
L.H. Krull ◽  
Mendel Friedman
Keyword(s):  
Ion Exchange ◽  
Quantitative Determination ◽  
Dimethyl Sulfoxide ◽  
Ion Exchange Separation

Measurement of Uric Acid in Biologic Fluids Using an Ion-Exchange Separation

1957 ◽  
Vol 3 (3) ◽  
pp. 169-177 ◽  
Author(s):  
Bernard Shapiro ◽  
David Seligson ◽  
Ralph Jessar
Keyword(s):  
Uric Acid ◽  
Ion Exchange ◽  
Quantitative Determination ◽  
Clinical Laboratory ◽  
Direct Methods ◽  
Urine Samples ◽  
Enzymatic Determination ◽  
Ion Exchange Separation ◽  
Routine Clinical Laboratory

Abstract A new method for the measurement of uric acid in biologic fluids is presented. It involves the isolation of uric acid by ion-exchange separation and quantitative determination of uric acid in the eluate by ultraviolet absorption, the Folin-Brown method or an enzymatic technic. The enzymatic determination on the eluate is the most specific of the technics. A series of determinations of uric acid in serum compares well with determinations on the same samples using the direct Folin-Brown procedure. The direct Folin-Brown method appears to be in error in determinations on certain urine samples. Measurements of uric acid in bile are reported. The technic can be used in the routine clinical laboratory, and is particularly applicable to fluids which cannot be studied by direct methods.

scholarly journals Ion Exchange Separation Using a Masking Reagent for the Determination of Trace Impurities in Iron and Steels by ICP-OES

2004 ◽  
Vol 90 (1) ◽  
pp. 48-50 ◽  
Author(s):  
Hitoshi YAMAGUCHI ◽  
Shinji ITOH ◽  
Shin'ichi HASEGAWA ◽  
Kunikazu IDE ◽  
Takeshi KOBAYASHI
Keyword(s):  
Ion Exchange ◽  
Icp Oes ◽  
Trace Impurities ◽  
Ion Exchange Separation

Ion-exchange separation and determination of calcium and magnesium

1977 ◽  
Vol 49 (11) ◽  
pp. 1595-1598 ◽  
Author(s):  
Michael D. Arguello ◽  
James S. Fritz
Keyword(s):  
Ion Exchange ◽  
Ion Exchange Separation ◽  
Calcium And Magnesium

Collaborative Study of a Zincon Ion Exchange Method for the Quantitative Determination of Zinc in Fertilizers

1971 ◽  
Vol 54 (4) ◽  
pp. 790-795
Author(s):  
C E Jones ◽  
L E Pracht
Keyword(s):  
Ion Exchange ◽  
Quantitative Determination ◽  
Atomic Absorption ◽  
Reference Data ◽  
Collaborative Study ◽  
Present Form ◽  
Exchange Method ◽  
Ion Exchange Method ◽  
Absorption Measurements

Abstract This collaborative study represents an attempt to validate the ion exchange zincon method for the quantitative determination of zinc in fertilizers. The values of the standard deviations Sd, Sr, and Sb and the results of the F- and t-tests are presented as an estimate of the precision, accuracy, and dependability. Atomic absorption measurements were also made and provided reference data for evaluation purposes. In its present form, the method falls short of expectations as an alternative wet approach to the dithizone method. It is recommended that the methods for determining zinc in fertilizers be studied further.

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