| Use: | Field screening of individual contaminants. See 6.2.20 for use with VOCs, SVOCs, and pesticides, and 9.1.8 for use with explosives. |
Description:
Immunoassay technology relies on an antibody that is developed to have a high degree of sensitivity to the target compound. This antibody's high specificity is coupled within a sensitive colorimetric reaction that provides a visual result. The intensity of the color formed is inversely proportional to the concentration of the target analyte in the sample. The absence/determination is made by comparing the color developed by a sample of unknown concentration to the color formed with the standard containing the analyte at a known concentration.
Analytes:
7. Metals
12. Mercury
Media:
| Soil/Sediment | Water | Gas/Air |
| BETTER | BETTER | Not Applicable |
| Selectivity: | Technique measures the contaminant indirectly. |
| Susceptibility to Interference: | Medium. |
| Detection Limits : | 100-1000 ppb (soil); 1-50 ppb (water). |
| Turnaround Time per Sample: | Minutes. |
| 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 technology with moderate field experience. |
| Certification/Verification: | Technology has participated in CalEPA certification and/or CSCT verification program. |
| Relative Cost per Analysis: | Least expensive. |
Limitations:
ASTM Standards/EPA Methods:
No applicable ASTM standards or EPA methods are cited for this technology.
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