Determination of fluoride by two-phase titration with triphenyltinchloride and X-ray fluorescence spectrometric end-point determination

1983 ◽  
Vol 80 (5-6) ◽  
pp. 327-343 ◽  
Author(s):  
B. Magyar ◽  
H. J. Bachmann
Keyword(s):  
Two Phase ◽  
X Ray ◽  
End Point ◽  
Point Determination

Enzyme-coupled measurement of uric acid in serum with a centrifugal analyzer.

1977 ◽  
Vol 23 (9) ◽  
pp. 1538-1540 ◽  
Author(s):  
R M White ◽  
R E Cross ◽  
J Savory
Keyword(s):  
Uric Acid ◽  
Aldehyde Dehydrogenase ◽  
Early Reading ◽  
End Point ◽  
Analytical Scheme ◽  
Point Determination

Abstract An early-reading blank-corrected end-point determination of uric acid in serum has been developed for use with a centrifugal analyzer. The method is based on a modification of the uricase (urate:oxygen oxidoreductase, EC 1.7.3.3)/catalase (hydrogen peroxide:hydrogen peroxide oxidoreductase EC 1.11.1.6)/aldehyde dehydrogenase (aldehyde:NAD(P)+ oxidoreductase, EC 1.2.1.5)-coupled analytical scheme reported by Haeckel [Z. Klin. Chem. Klin. Biochem. 14, 101 (1976)]. Sensitivity and precision of the method are excellent, and results compare well with those obtained by the Kageyama procedure [Clin. Chim. Acta 31, 421 (1971)].

Electroanalytical end-point determination of hydrolytic precipitation titrations of sulphate and oxalate

1978 ◽  
Vol 69 (1-2) ◽  
pp. 27-34 ◽  
Author(s):  
Ferenc F. Gaál ◽  
Ljiljana S. Jovanović ◽  
Zorka S. Jevrić ◽  
Jolan N. Ilijević ◽  
Velimir D. Canić
Keyword(s):  
End Point ◽  
Point Determination ◽  
Hydrolytic Precipitation

Determination of the second critical end point in silicate-H2O systems using high-pressure and high-temperature X-ray radiography

2004 ◽  
Vol 68 (24) ◽  
pp. 5189-5195 ◽  
Author(s):  
Kenji Mibe ◽  
Masami Kanzaki ◽  
Tatsuhiko Kawamoto ◽  
Kyoko N. Matsukage ◽  
Yingwei Fei ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
X Ray ◽  
End Point

Small-angle X-ray scattering of two-phase systems: significance of polydispersity

2010 ◽  
Vol 43 (5) ◽  
pp. 998-1004 ◽  
Author(s):  
Wilhelm Ruland
Keyword(s):  
Size Distribution ◽  
Small Angle ◽  
Two Phase ◽  
X Ray ◽  
X Ray Scattering ◽  
Phase Systems ◽  
Two Phases ◽  
The Relationship ◽  
Ray Scattering

Evaluation of the small-angle X-ray scattering of two-phase systems leads to the determination of the Porod lengthlpand the correlation lengthlc. In dilute systems, the parameter κl=lc/lp− 1 is a measure of the polydispersity of the chord lengthslwithin the dilute phase, which depends on the size distribution and the shape of the particles forming this phase. As an example, the change of κlwith the size distribution is calculated for spheres and spheroids. For dense two-phase systems, κldepends not only on the polydispersities of the chord lengthsl1andl2of the two phases but also on the spatial order in the system. This is demonstrated by examples related to microemulsions. The appendix contains a short discussion on the relationship between chord-length distributions and Bertrand's paradox.

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