A method for the colorimetric determination of silicon and phosphorus in fluorinated organic compounds is outlined. After mineralisation of the material by fusion with sodium peroxide, silicon is determined as silicomolybdenum blue and phosphorus as phospho-vanadomolybdate. Mean recoveries of 101.3% (standard deviation 1.64) for silicon and 100.9% (standard deviation 2.02) for phosphorus were obtained.
A method for the determination of iron in solid organic compounds, such as ferrocene and its derivatives, has been developed. Sample weights between 25 and 400 μg were used, the optimum sample size being such as to contain between 10 and 20 μg of iron. All results obtained from the analysis of standard compounds were within ±0.5 % absolute. An indication is given of the utility of working on the small scale in detecting inhomogeneity of materials.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhosphorus Availability, Crop Response to Phosphorus in Water-Insoluble Phosphates Varying in Citrate Solubility and Granule SizeG. L. Terman, D. R. Bouldin, and J. R. WebbCite this: J. Agric. Food Chem. 1961, 9, 2, 166–170Publication Date (Print):March 1, 1961Publication History Published online1 May 2002Published inissue 1 March 1961https://pubs.acs.org/doi/10.1021/jf60114a023https://doi.org/10.1021/jf60114a023research-articleACS PublicationsRequest reuse permissionsArticle Views86Altmetric-Citations2LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
A gravimetric finish has been applied to the semi-micro determination of phosphorus in organic compounds after fusion with sodium peroxide. It has been shown that the precipitate of quinoline phosphomolybdate prepared from 3 mg of phosphorus has the theoretical composition and that, using a special weighing technique, very precise results can be obtained. Two other weighing techniques are described which give results satisfactory for semi-micro work.
