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Related Concept Videos

Precipitation Titration Curve: Analysis01:21

Precipitation Titration Curve: Analysis

The precipitation titration curve demonstrates the change in concentration of one reactant with the volume of titrant added. During the titration of chloride ions with silver nitrate, the precipitation titration curve is divided into three regions: before, at, and after the equivalence point. Before the equivalence point, low redissolution of the sparingly soluble silver chloride precipitate gives a low silver ion concentration. However, in the second region, representing the equivalence point,...
Complexometric Titration: Overview00:39

Complexometric Titration: Overview

Complexometric titration involves the formation of a complex by reacting a metal ion with one or more ligands. A visual indicator often detects the end point of a complexometric titration. It is added to the metal solution before the titration, forming a stable metal–indicator complex and imparting color to the solution. As the titration approaches the equivalence point, the excess of the added ligand displaces the indicator from the metal–indicator complex, releasing the free indicator. The...
Classification of Titrimetric Analysis Based on Reaction Types01:01

Classification of Titrimetric Analysis Based on Reaction Types

Titrimetric analysis in solution chemistry involves measuring the volume of solutions and is often called volumetric analysis. The standard solution of known concentration in the burette is called the titrant, whereas the solution of unknown concentration in the flask is called the analyte, or titrand. Titrimetric analyses can be classified into four types based on the reactions between the titrant and analyte.
Titrations between an acid and a base lead to neutralization reactions that form...
Precipitation Titration: Endpoint Detection Methods01:19

Precipitation Titration: Endpoint Detection Methods

In argentometric precipitation titrations, endpoints can be detected visually by the Mohr, Volhard, and Fajans methods. In the Mohr method, adding a soluble chromate indicator gives an initial yellow color to the analyte solution. As the titrant is added, the first excess of silver ions forms a red silver chromate precipitate, marking the endpoint. The solution pH should be maintained at about 8 by adding solid CaCO3.
In the Volhard method, a standard excess of AgNO3 is first added to the...
Precipitation Titration: Overview01:26

Precipitation Titration: Overview

Precipitation titration involves the reaction of a titrant and an analyte to generate an insoluble precipitate. While precipitation titration uses various precipitating agents, silver nitrate is the most common precipitating reagent; titrations involving Ag+ are called argentometric titrations. Usually, the endpoint in a precipitation titration can be detected by visual indicators.
A precipitation titration curve demonstrates the change in concentration of the titrant or analyte upon adding the...
EDTA: Indirect and Alkalimetric Titration01:23

EDTA: Indirect and Alkalimetric Titration

Unlike direct titration, back-titration, and displacement titration, indirect titration is an EDTA titration method for quantifying anions. In the indirect titration method, anions are precipitated as their insoluble salts with excess metal ions. The filtrate containing the excess metal ions is directly titrated with standard EDTA until the endpoint is achieved. Another approach involves extracting the metal ion and back-titrating with standard EDTA to obtain the endpoint. In this way, the...

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Titration ELISA as a Method to Determine the Dissociation Constant of Receptor Ligand Interaction
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EFFECTS ON TITRATIONS OF INEQUALITY OF SENSITIZATION OF CORPUSCLES.

C H Bailey1

  • 1Pathological Department of St. Luke's Hospital, New York.

The Journal of Experimental Medicine
|October 30, 2009
PubMed
Summary
This summary is machine-generated.

Amboceptor (immune protein) rapidly binds to corpuscles, but uneven distribution can affect sensitization. Consistent methods are crucial for accurate hemolytic serum and complement titrations.

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Area of Science:

  • Immunology
  • Hematology

Background:

  • Amboceptor plays a key role in immune reactions involving corpuscles.
  • Accurate quantification of immune components like hemolytic sera and complement is vital in serological studies.

Purpose of the Study:

  • To investigate the kinetics and factors influencing amboceptor absorption by corpuscles.
  • To determine the impact of sensitization variability on experimental outcomes.

Main Methods:

  • Studied amboceptor absorption rates by corpuscles at different time points.
  • Varied corpuscle suspension concentrations (2% vs. 5%) to assess impact on absorption.
  • Examined the influence of distribution time on sensitization uniformity.

Main Results:

  • Amboceptor absorption by corpuscles is rapid, occurring within seconds.
  • Sensitization uniformity is affected by the time for corpuscle distribution in immune serum.
  • Higher corpuscle concentrations (5%) lead to faster but potentially less uniform sensitization.

Conclusions:

  • Even sensitization of corpuscles is critical for reliable titration of hemolytic sera and complement.
  • Standardized activation methods and bulk sensitization are recommended for experimental consistency.