## Semiquantitative determination of residues of amphetamine in sewage sludge samples A procedure based on HPLC and mass spectrometric detection has been developed for screening of residues of the illicit drug amphetamine in sewage sludge. Sample pretreatment consisted in extraction by 50 mM formic
Semimicro determination of nitrogen in sewage sludges
✍ Scribed by Klein, L.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1947
- Weight
- 122 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0368-4075
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✦ Synopsis
Abstract
A semimicro‐method for determining nitrogen in sewage sludges is described avoiding the use of a micro‐balance or a micro‐burette. The whole estimation can be completed in just over one hour. Good agreement is shown between results obtained by this method and by the older Kjeldahl method.
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