Letter | Published:

A Sensitive Method for Determination of Low Concentrations of Diquat and Paraquat

Naturevolume 199pages10111012 (1963) | Download Citation



DETERMINATION of residues has become an important aspect of herbicidal research. Efforts are continually being made to increase the sensitivity of known tests for the chemical analysis of a large number of herbicides. Aquatic herbicides must be effective and used in small quantities (usually 1.0–5.0 p.p.m.) to be economically feasible; consequently, their residues are usually very small.

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  1. School of Agriculture, Auburn University, Alabama

    •  & J. M. LAWRENCE


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