An on line concentration technique was developed to determinate trace impurity in Zolmitriptan and Mexitil.

利用在线富集技术测定药物佐米曲坦和盐酸美西律中的痕量杂质.

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A method was developed for the determination of trace impurity affecting ultraviolet transmittance in ethylene glycol.

建立了测定乙二醇中影响紫外透光率的痕量杂质的方法.

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