Method of Analysis at the U.S. Geological Survey California Water Science Center, Sacramento Laboratory – Determination of Haloacetic Acid Formation Potential, Method Validation, and Quality-Control Practices
Barbara C. Zazzi, Kathryn L. Crepeau, Miranda S. Fram and Brian A. Bergamaschi
Table 6
Accuracy and precision for haloacetic acid method determined from analyses of spiked surface-water samples from Orange County, California.
[µg/L; micrograms per liter]
| Analyte name | Number of samples | Spiked concentration (μg/L) | Mean percent recovery | Standard deviation (percent) |
|---|
| Bromochloroacetic acid | 39 | 4.0 | 109 | 19 |
|---|
| Bromodichloroacetic acid | 37 | 4.0 | 107 | 26 |
|---|
| Dibromochloroacetic acid | 38 | 10. | 104 | 22 |
|---|
| Dibromoacetic acid | 41 | 2.0 | 117 | 24 |
|---|
| Dichloroacetic acid | 39 | 6.0 | 109 | 23 |
|---|
| Monobromoacetic acid | 41 | 4.0 | 99 | 19 |
|---|
| Monochloroacetic acid | 36 | 6.0 | 106 | 22 |
|---|
| Tribromoacetic acid | 40 | 20. | 107 | 30 |
|---|
| Trichloroacetic acid | 23 | 2.0 | 110 | 29 |
|---|