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本文提出了示差-双波长分光光度法,并将其应用于对苯二甲酸的纯度分析,取得满意结果。该法为高含量混合物的准确测定,提供了新的途径。
In this paper, differential-double-wavelength spectrophotometry was proposed and applied to the purity analysis of terephthalic acid, and satisfactory results were obtained. This method provides a new way for the accurate determination of high-level mixtures.