An HPLC method was used to study chemical composition of Guangxi and Kenyanbroken black teas and their relationship with tea quality.
用HPLC分析比较了广西红碎茶与肯尼亚红碎茶的化学成分，研究了红碎茶化学成分与品质的关系。
METHODS An HPLC method was used for the determination of content and related substances of diltiazen hydrochloride. The stability under heat and light was investigated.
方法：采用HPLC测定注射液的含量及有关物质，考察制剂对强光、热的稳定性及有效期。
An efficient optimization method was used to separate catechin compounds by reversed-phase high performance liquid chromatography (RP-HPLC).
有效地确定了反相高效液相色谱分离儿茶酚化合物的最佳条件。
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