You are here: Home
/ Publication Information
Title: Determination of Arsenical Herbicide Residues in Plant Tissues
Author: Sachs, R.M.; Michael, J.L.; Anastasia, F.B.; Wells, W.A.;
Source: Weed Science 19: 412-416
Publication Series: Miscellaneous Publication
Description: Paper chromatographic separation of hydroxydimethylarsine oxide (cacodylic acid), monosodium methanearsonate (MSMA), sodium arsenate, and sodium arsenite was achieved with the aid of four solvent systems. Aqueous extracts of plant tissues removed essentially all the arscnicals applied, but mechanoiic fractionation was required before the extracts could be analyzed by paper chromntographic procedures. A standard nitric-sulfuric acid digestion procedure was employed for arsenic analyses, but great care was taken to avoid sulfuric-acid-induced charring by first adding relatively large amounts of nitric acid to drive off chlorides present. Depending upon the amount of chloride present, substantial losses of arsenic as arsine chlorides were observed if the samples charred. Five minutes in fuming sulfuric acid to completely break the carbon-arsenic bonds was another critical requirement for the quantitative determination of arsenic from cacodylic acid and MSMA. The silver diethyldithiocarbamate calorimetric method was useful for detecting as little as 0.6 mg or as much as 20 mg of arsenic per sample.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication. (Please specify exactly
which publication you are requesting and your mailing address.)
XML: View XML
Sachs, R.M.; Michael, J.L.; Anastasia, F.B.; Wells, W.A. 1971. Determination of Arsenical Herbicide Residues in Plant Tissues. Weed Science 19: 412-416
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility