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    DIFFERENT PRETREATMENTS EFFECTIVENESS IN PEROXIDE BRIGHTENING OF HIGH YIELD PULPS by Barboza, Olga M., Area, María C., Felissia, Fernando E., Venica, Alberto D.

    Published 2005
    “…Pretreatment trials were made with four chelants (A: DTPA, B: DTPMPA; C: HEDTA, D: hydroxycarboxylic acids and phosphonates mixture), sulfuric and glycolic acids. The work involved three stages. …”
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