| Test | Procedure | Reference |
|---|---|---|
| Digestion | Microwave | 2 |
| Grinding | Cyclone Mill | 1 |
| Standard package and other metals | ICP | 4 |
| Nitrate - Nitrogen or Chloride | Water or Acetic Acid Extract | 1 |
| Kjeldahal - Nitrogen | Block Digestor | 1 |
| Phosphate - P, Potassium, Ammonium, and Sulfate | 2% Acetic Acid Extract | 1 |
| Special - As, Se, and Mo | ICP-MS | 3 |
| References: | |
| 1. | Gavlak, R. G., D. A. Horneck, and R. O. Miller. 1994.
Plant, Soil and Water Reference
Methods for the Western Region. W. Reg. Ext. Publ.125. |
| 2. | Jones, Jr., J. Benton, Benjamin Wolf, and Harry A. Mills.
1991. Plant Analysis Handbook 1.
Methods of Plant Analysis and Interpretation. p. 199-200. Macro-Micro Publishing, Inc. |
| 3. | Long, Stephen E. and Theodore D. Martin. 1991. Determination
of Trace Elements in Waters
and Wastes by Inductively Coupled Plasma - Mass Spectrometry. USEPA Method 200.8. U.S. Gov. Print. Office, Washington, DC. |
| 4. | U.S. Environmental Protection Agency Staff. 1982. Inductively Coupled
Plasma Atomic
Emission Spectrometric Method for Trace Element Analysis of Water and Wastes. USEPA Method 200.7, U.S. Gov. Print. Office, Washington, DC. |