Microdetermination of halogen with silver boat

Microdetermination of Chloride in Biological Fluids, with Solid Silver Iodate

was outlined in detail, with gasometric measurement of the iodate resulting from the reaction. In this paper titrimetric measurement of the iodate is described. Titrimetric measurement of the iodate is directly applicable to the supernatant fluid in the AgI08 precipitation of chloride from salt solutions, urine, serum, and protein-free jiltrate of serum and of whole blood.’ For the titrimetric ...

The Microdetermination of Biological Copper with Oxalyldihydrazide.

Methods are described for the determination of microgram quantities of biological copper in aqueous medium as the intensely coloured oxalyldihydrazide-acetaldehyde complex (molar extinction coefficient 23,000 to 23,500). The methods are applicable on a routine basis to any biological material, in particular to serum, urine, or tissues, such as liver, brain, or kidney. In the case of urine a sim...

Microdetermination of Chloride in Blood Plasma and Cells, by Spectrophotometric Analysis Using Solid Silver Iodate.

As an extension of the silver iodate method of Sendroy,a convenient, reproducible, and sensitive method for analysis of chloride in 0.02-mi. samples of serum, whole blood, or red cells isdescribed. The procedureinvolves (1) preparation of a proteinfree filtrate of the sample, (2) Ag103 reaction with the filtrate, and (3) spectrophotometric analysisof iodineas the quantitative measureof the amou...

Thinking with the Coleman Boat

Photometric Microdetermination of Human Gamma

The main purpose in performing the detailed experimental studies in Part I is the application of the photometric method to the determination of the gamma globulin content of human sera. These experimental studies show that protein fractions such as albumin or alpha globulins, whose electrophoretic mobilities are far removed from gamma globulin, cause little interference with its determination. ...