几种偶氮染料生物降解性研究

用改进的Bunch和Chambers的静态生物培养技术研究了五种偶氮染料的生物降解性.结果表明,这些染料在厌氧条件下容易降解,在好氧条件下降解速率很慢,厌氧降解时偶氮基断裂生成胺基物.降解速率的大小与染料的结构及取代基的种类和数目有关.

Study on Biodegradability of Some Sorts of Azo-Dyestuffs.

Biodegradability of five azo-dyestuffs was studied with the static bio-cultural procedure of Bunch and Chambers. The results showed that the dyestuffs were so easy to be degraded under anaerobic conditions that azo-group could cleave to be aniline sulfonic acid, but under aerobic conditions their decomposition was very slow. The magnitude of degradable rates depends on the dyestuff structure and substituent species and numbers.