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The I : I′‐dianthrimide reagent was tested for determining boron in some plants and soils. A convenient modification of the method of Ellis, Zook & Bandish (1949) is described, permitting the determination of 3 μg. of boron with a standard error of ± 0.48%, using the Biochem absorptiometer.
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Gorfinkiel et al. (1952) studied this question.
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