Alkalinity and Chloride by Titration
Method Abstract #119
Scope and Application
This method conforms to EPA Method 310.1, Standard Method 2320 and ASTM Method D 1067-92 for alkalinity and Standard Method 4500-Cl D for chloride. It determines the alkalinity and chloride concentrations from a single sample aliquot
Method Summary
The sample is first titrated with standard sulfuric acid to pH 4.2 and the total alkalinity of the sample is calculated. The same sample aliquot is then titrated with standard silver nitrate until the chloride endpoint is achieved and calculated.
Sample Titration Curves
Alkalinity
Chloride
Method Performance
Example Speciation of Alkalinity
*This measuring range was determined by analyzing laboratory-prepared standards made from sodium chloride and sodium carbonate.
**The Method Detection Limit (MDL) was determined based on data obtaining a coefficient of variance better than 30%. Results may differ depending on laboratory practices and sample matrix.
