METHODS Acidic dye colorimetry with bromothymol blue as ion pair reagent was employed to determine the alkaloids in samples.
方法用溴麝香草酚蓝同川芎生物碱形成稳定的有色离子对酸性染料比色法测定总生物碱的含量。
Methods total alkaloids in Nitraria was extracted by acid-base and the content of total alkaloids was determined by the acidic dye colorimetry.
方法采用酸碱提取法提取总碱，以硫酸阿托品为对照品，酸性染料比色法测定白刺总生物碱的含量。
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