Spectrophotometric determination of boron in dates of some cultivars grown in Saudi Arabia.
The formation of a red complex between boron and the quinalizarin reagent was investigated and used as the basis for a simple and sensitive spectrophotometric method for boron in date cultivars. At 620 nm, the absorbance was linear (r = 0.999) over the 0.25-2.5 micrograms/mL concentration range. The molar absorptivity was found to be 2.23 x 10(3) mol-1 cm-1 and the relative standard deviation for 10 replicates (1.0 micrograms/mL) was 0.97%.
al-Warthan
A A
AA
King Saud University, College of Science, Chemistry Department, Riyadh, Saudi Arabia.
al-Showiman
S S
SS
al-Tamrah
S A
SA
BaOsman
A A
AA
D001895:Boron / Q000032:analysis*; D003124:Colorimetry; D005638:Fruit / Q000737:chemistry*; D007202:Indicators and Reagents; D012529:Saudi Arabia; D012639:Seeds / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet
D007202:Indicators and Reagents; D001895:Boron