Selecting the right Hg technique really depends on your analytical needs. For some labs, the decision will be driven solely by the need to comply with a specific regulatory method. For example, if your lab is required to analyze samples using EPA Method 245.1, then you will need to use the technique of cold vapor atomic absorption spectroscopy (CVAAS). If you are required to follow specific regulatory methods, you may find the following information helpful.
The following methods require the technique of cold vapor atomic absorption (CVAA):
| EPA 245.1 | EPA 245.5 | EPA 245.6 |
| EPA 7470A | EPA 7471B | EN 1483 |
| EN 13806 |
The following methods require the technique of cold vapor atomic fluorescence (CVAF):
| EPA 245.7 | EPA 1631E | EN 13506 |
| EN 12338 | EN 17582 |
The following methods require Direct Analysis or Thermal Decomposition:
| EPA 7473 | ASTM D6722-01 |