| Use: | Used for analyzing samples contaminated with heavy metals. |
Description:
Titrimetry is a wet chemistry procedure by which a solution of known concentration is added to a water sample or soil-solute extract with an unknown concentration of the analyte of interest until the chemical reaction between the two solutions is complete (the equivalence point of titration). Titrimetry requires an abrupt change in some property of the solution at the equivalence point, which is typically produced by a change in color produced by an added dye, or by monitoring changes in pH with a meter.
Analytes:
7. Metals
9. Inorganics
Media:
| Soil/Sediment | Water | Gas/Air |
| ADEQUATE | BETTER | Not Applicable |
| Selectivity: | Technique measures the contaminant directly. |
| Susceptibility to Interference: | Medium. |
| Detection Limits : | 10-100 ppm (soil); 0.5-10 ppm (water). |
| Turnaround Time per Sample: | Hours. |
| Applicable To: | |||
| Screen/Identify | Characterize Concentration/Extent | Cleanup Performance | Long-Term Monitoring |
| BETTER | ADEQUATE | BETTER | BETTER |
| Quantitative Data Capability: | Data become quantitative with additional effort. |
| Technology Status: | Commercially available and routinely used field technology. |
| Certification/Verification: | Technology has not participated in CalEPA certification and/or CSCT verification program. |
| Relative Cost per Analysis: | Least expensive. |
Limitations:
EPA Methods:
| 9014 | Titrimetric and Manual Spectrophotometric Determinative Methods for Cyanide. |
| 9034 | Titrimetric Procedure for Acid-Soluble and Acid-Insoluble Sulfides. |
| 9253 | Chloride (Titrimetric, Silver Nitrate). |
| 215.2 | Titrimetric Analysis of Calcium (drinking water). |
| Series 300 | Multiple Methods for Determining Acidity/Alkalinity and for Identifying Non-metallic Inorganics (drinking water). |
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