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STUDY ON THE ABSORPTIO-PHOTOMETRIC DETERMINATION OF IRON IN TOBACCO WITH RUTIN

Bao Wang

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Abstract

Rutin as a chromogenic reagent, reacts with Fe(Ⅲ) in a weakly acidic solution (0.014～0.032mol·L -1 HCl) and in the presence of CTMAB to form a stable bluish violet complex (mole ratio Fe∶R=1∶2) having it absorption maxima at 620nm. Beer′s law was obeyed in the range of 0～20μg of iron(Ⅲ) per 25ml of solution, with its apparent molar absorptivity of 4.40×10 4L·mol -1 ·cm -1 . A new absorptiophotometric method for the determination of iron in tobacco was proposed based on the facts mentioned above.

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What this paper is about

Rutin as a chromogenic reagent, reacts with Fe(Ⅲ) in a weakly acidic solution (0.014～0.032mol·L -1 HCl) and in the presence of CTMAB to form a stable bluish violet complex (mole ratio Fe∶R=1∶2) having it absorption maxima at 620nm. Beer′s law was obeyed in the range of 0～20μg of iron(Ⅲ) per 25ml of solution, with its apparent molar absorptivity of 4.40×10 4L·mol -1 ·cm -1 . A new absorptiophotometric method for the determination of iron in tobacco was proposed based on the facts mentioned above.

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Available abstract

Rutin as a chromogenic reagent, reacts with Fe(Ⅲ) in a weakly acidic solution (0.014～0.032mol·L -1 HCl) and in the presence of CTMAB to form a stable bluish violet complex (mole ratio Fe∶R=1∶2) having it absorption maxima at 620nm. Beer′s law was obeyed in the range of 0～20μg of iron(Ⅲ) per 25ml of solution, with its apparent molar absorptivity of 4.40×10 4L·mol -1 ·cm -1 . A new absorptiophotometric method for the determination of iron in tobacco was proposed based on the facts mentioned above.

Key concepts: Molar absorptivity, Reagent, Chromogenic, Chemistry, Rutin, Absorption (acoustics), Spectrophotometry, Nuclear chemistry

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STUDY ON THE ABSORPTIO-PHOTOMETRIC DETERMINATION OF IRON IN TOBACCO WITH RUTIN — Research Paper | ScholarLens