Abstract
Abstract A collaborative study was made of Schwartzman’s method for residues of nicotine in waxy crops and leafy crops. The nicotine is stripped from leafy crops with ammoniacal benzene-chloroform and from waxy crops with ammonium hydroxide, extracted with acid, and measured on an ultraviolet spectrophotometer. Average recoveries by five collaborators were 95.9% for waxy crops and 103.8% for leafy crops. It is recommended that the method be adopted as official, first action.
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Publication Info
- Year
- 1964
- Type
- article
- Volume
- 47
- Issue
- 2
- Pages
- 303-305
- Citations
- 3
- Access
- Closed
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Identifiers
- DOI
- 10.1093/jaoac/47.2.303