A colorimetric determination of boron in biological materials.

Metal complexes of curcumin – synthetic strategies, structures and medicinal applications

“…The oldest known application of curcumin complexes is related to the spectrophotometric detection of trace amounts of boron in various media, 44 including biological materials 45 (e.g. foodstuffs, plants and blood plasma), natural water and sea water, soil, iron and steel, as well as materials relevant to nuclear technology, such as uranium metal, uranium oxide and aluminum.…”

The boron content of selected foods and the estimation of its daily intake among free-living subjects.

“…After the addition of 0.5 ml of double-distilled deionized water, boron was determined by using the colorimetric method of Ikeuchi and Amano [16]. The procedure was adopted as described, except in the last step where 0.75 ml of extract was diluted with 25 ml of 95% ethanol.…”

Determination of boron in biological tissues by inductively coupled plasma atomic emission spectrometry

“…A radio frequency combustion with excited oxygen plasma was proposed for the decomposition of animal tissues, after which oxidative degradation of the complex boron compound was achieved with potassium permanganate, and the boron was determined by the curcumine method (5). The plasma ashing method took 17 h and some loss of boron was acknowledged during the precipitation of the manganese dioxide.…”