【摘要】 应用分光光度计实现在线监测活性染液浓度的影响因素包括温度、中性盐和碱。据此,在染色的监测过程中,测试吸光度前要使染液通过恒温槽,以保证测试温度的恒定;由盐引起的染料吸光度的改变是立即发生的,不随时间而变化,可通过建立盐和染料浓度的函数关系进行监测;加入碱后,染液吸收光谱不稳定,可采取加入缓冲剂等方法解决。更多还原

【Abstract】 Factors affecting on-line monitoring of reactive dye concentration with spectrophotometry method is investigated,including dye bath temperature,neutral salt and alkali.During on-line monitoring of dyeing process,the dye bath should pass through a thermostat trough to ensure constant temperature.The absorbance of dye changes immediately after adding salt and does not vary with time.It can be solved by establishing a function of salt concentration to dye concentration during on-line monitoring.The absorption spectrum fluctuates after adding alkaline and goes back stable after the addition of buffers.更多还原