The article presents a simultaneous determination method for three kinds of water-soluble dyes: acid red, acid brown and acid black by solving simultaneous equations using a UV-VIS spectrophotometer.

介绍了利用解联立方程组的方法，在紫外可见分光光度计上实现了对酸性红、酸性棕和酸性黑的混合染料中三种成分浓度的同时测定。

youdao

The flocculation of easily water - soluble dyes such as reactive brilliant red, acid anthraquinone blue and reactive brilliant blue was obtained in acidic and weak acidic media by JAZ flocculants.

JAZ型絮凝剂与水溶性大的染料，如活性艳红，酸性蒽醌蓝、活性艳蓝的絮凝作用在酸性和弱酸性介质中出现。

youdao

He says there is little evidence backing other popular energy additives, including the amino acid taurine in Red Bull.

FORBES: Magazine Article

It was not quite the sudden shift from litmus red to blue of an acid being neutralised by an alkali, but it was not far off.

ECONOMIST: Ecology raids the techniques of chemistry

Both breast-fed and formula-fed babies who had been given n-3 fatty acid enriched egg yolks had 30-40% greater red cell membrane DHA levels than those fed normal egg yolks.

BBC: Egg boost for babies