Moreover, some azo dyestuff wastewater also bears chromium compounds.
同时，一些偶氮染料废水中也存在铬离子。
2
The tautomeric equilibrium between the azo type and the hydrazone type of these compounds in different solvents and different acidity has also been studied.
对它们在不同溶剂。 不同酸碱度溶液中的偶氮式及腙式间互变异构平衡进行了研究。
3
The team used the cell to clear aromatics, azo dyes, pharmaceuticals, personal care products and endocrine-disrupting compounds from wastewater samples.