✦ LIBER ✦

Spectrophotometric determination of boron in plants after separation as trimethyl borate by microdiffusion

✍ Scribed by Junichi Shida; Hidetoshi Suzuki; Sigeki Abe

Book ID: 104100510
Publisher: Elsevier Science
Year: 1985
Tongue: English
Weight: 330 KB
Volume: 169
Category: Article
ISSN: 0003-2670
DOI: 10.1016/s0003-2670(00)86239-x

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✦ Synopsis

A sensitive and precise method based on microdiffusion is proposed for the determination of traces of boron in plants. A sealed digestion bomb is used; the powdered sample is dissolved in ZnCl,/AlCl, solution containing methanol in the teflon vessel and the trimethyl borate formed is collected in sodium hydroxide pellets. The boron, as an ion-associate of the 2,6-dihydroxybenzoic acid complex and malachite green, is extracted into chlorobenzene. At 629 run, Beer's law is obeyed for the range 0.05-0.5 pg of boron. The accuracy of the proposed method was confirmed by analyzing the Orchard Leaves and Pepperbush standards.

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