This method is for the total residue or weight of solid material combustible at 550°C present in the solid fraction of sewage, activated sludge, industrial wastes, or bottom sediments. A well-mixed aliquot of the sample is quantitatively transferred to a pre-weighed evaporating dish and evaporated to dryness at 103. The residue obtained from the determination of total, filterable or non-filterable residue is ignited at 550°C in a muffle furnace. The loss of weight on ignition is reported as mg/L volatile residue.
The test is useful in obtaining a rough approximation of the amount of organic matter in the solid fraction of sewage, activated sludge, industrial wastes, or bottom sediments.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | 7 days from sample collection to analysis. |
| Preservatives: | Store sample at 4°C. |
| Required Preps: | 250 mL HDPE or amber glass bottle |
| Collection Method: | Grab sampling |
| Analytical Methodology: | Gravimetric |
| Documentation: | 
160.4
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Volatile Solids | 10 |
mg/L | ||
* 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.