This method is for the determination of total nitrogen in fertilizer. The nitrogen is released from the sample through combution at high temperature under high-purity oxygen. Nitrogen is measured by thermal conductivity detection and reported as weigh/weight percent nitrogen in the sample. The range of the method is 1-67% total nitrogen content.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | None specified in the method. |
| Preservatives: | None specified in the method. |
| Required Preps: | 50g of sample in a Glass or plastic bottle with Teflon-lined lid |
| Collection Method: | Grab sampling |
| Analytical Methodology: | Combustion analyzer |
| Documentation: | |
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Nitrogen | N2 |
7727-37-9 |
0.1 |
% |
* The analytes and detection limits listed for each method represent the typical detection limits and analytes reported for that particular method. Keep in mind that analyte lists may vary from laboratory to laboratory. Detection limits may also vary from lab to lab and are dependent upon the sample size, matrix, and any interferences that may be present in the sample.