Study on Measurement of Chromium Content in Ramie through UV Spectrophotometry

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In this paper, UV spectrophotometry was used to test the chromium content of bast fiber of ramie and diphenylcarbazide (DPC) was used as color reagent. The optimal technology was: dropping volume of phosphoric acid 0.4~0.6 mL, DPC content 2.0~4.0 mL and coloration time 5-10 minutes. The results showed that complexes were formed from Cr (VI) ions and DPC under phosphoric acid condition. There was a maximum positive absorption peak at the 540nm. Cr (VI) concentration (in the range of 0.004~1.000 mgL-1) and the absorbance (A) of complex obeyed the Lambert-Beer law.

Info:

Periodical:

Advanced Materials Research (Volumes 332-334)

Edited by:

Xiaoming Qian and Huawu Liu

Pages:

1914-1917

DOI:

10.4028/www.scientific.net/AMR.332-334.1914

Citation:

J. Q. Li et al., "Study on Measurement of Chromium Content in Ramie through UV Spectrophotometry", Advanced Materials Research, Vols. 332-334, pp. 1914-1917, 2011

Online since:

September 2011

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Price:

$38.00

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