摘要
利用自制民用碳渣对深色革提取液脱色后,用分光光度法对其中Cr(Ⅵ)含量进行测定。碳渣对有色溶液具有良好的脱色性能:在30℃,pH=11．0的条件下,用3 g碳渣对20 mL的提取液脱色3 h,除了黄色染料溶液外,其余染料溶液的脱色率可达95％以上,对Cr(Ⅵ)离子不吸附,排除了检测中有色溶液对Cr(Ⅵ)测定的干扰。
After decolouring the extracting solutions of deeply-dyed leather by self-made coal cinder,the content of chromium （Ⅳ） was determined by spectrophotometry. The coal cinder performanced well in decQlouring： in the condition of 30 ℃ and pH 11.0, 3 g coal cinder was used to decolour the extracting solutions for 3 hours, the decolouring rate of dyestuff solutions＇could be above 95% except yellow dyestuff solution, the chromium （Ⅳ） ion was not absorbed, and the interference of dyestuff to the determination of chromium （Ⅳ） was excluded.
出处
《皮革科学与工程》
CAS
2007年第1期11-15,共5页
Leather Science and Engineering
关键词
深色皮革
Cr(Ⅵ)
脱色
deeply-dyed leather
chromium （Ⅳ）
decolour
