A SPECTROFLUORIMETRIC SENSOR BASED ON GRAPE SKIN TISSUE FOR DETERMINATION OF IRON(III)

作者：Zhang Minghui; Zheng Baozhan; Yuan Hongyan^*; Xiao Dan

来源：Bulletin of the Chemical Society of Ethiopia, 2010, 24(1): 31-37.

• Grape skin
• Fluorescence
• Iron(III)

A spectrofluorimetric method based on the grape skin has been developed for the determination of Fe(3+) at pH 5.0. The emission wavelength of the grape skin sensor occurs at 680 nm and the excitation wavelength at 421 nm. The fluorescence of sensor could be quenched by Fe(3+) due to the complexing ability of anthocyanin with the metal ions. Anthocyanin, the main pigment in the grape skin, has been found fluorescence sensing material. The sensor based on the grape skin exhibited a calibration response for Fe(3+) in two concentration ranges of 1.0 x 10(-8) - 1.0 x 10(-5) M (r(2) = 0.9888) and 3.2 x 10(-5) - 3.2 x 10(-4) (r(2) = 0.9856) M at 60 degrees C. The detection limit was found to be 7.5 x 10(-9) M, and the other common ions did not interfere.

• 出版日期2010-4
• 单位四川大学