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A chemometric approach to understanding the bioelimination of anionic, water‐soluble dyes by a biomass—Part 3: Direct dyes **
Author(s) -
Churchley J H,
Greaves A J,
Hutchings M G,
Phillips D A S,
Taylor J A
Publication year - 2000
Publication title -
coloration technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 1472-3581
DOI - 10.1111/j.1478-4408.2000.tb00047.x
Subject(s) - naphthalene , chemistry , chromophore , water soluble , photochemistry , organic chemistry
Using a new, rapid and robust laboratory method for assessing the bioelimination of water‐soluble dyes, the level of bioelimination of a series of direct dyes has been determined and a chemometric analysis has been conducted on the bioelimination results to correlate bioelimination with chemical structure. Bioelimination varies from 0 to 95% and correlates, for the majority of the direct dyes studied, with their size/charge ratio. The bioelimination of direct dyes is enhanced by large size/charge ratios, the presence of aromatic amino functions and extended azo (naphthalene) chromophores.