acidic dye spectrophotomety的用法和样例：
- This method was an improvement on acid dye direct titration.
- METHODS A solvent extraction acid dye spectrophotometry method was used with the detection wavelength at 412 nm.
方法 采用溶剂萃取酸性染料比色法测定含量 ,检测波长4 12nm。
- An acid dye colorimetry method was developed for the determination of cyclovirobuxine D and its tablets .
- METHODS Acidic dye colorimetry with bromothymol blue as ion pair reagent was employed to determine the alkaloids in samples.