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采用三波长分光光度法，测定维生素E箱中维生素E的含量。实验方法简便、快速、重现性好。线性范围为40～120μg／ml．r=0.9997，回收率为100.1％（n=5），RSD=0.84％。适用于该制剂质量控制。
Three-wavelength spectrophotometry was used to determine the content of vitamin E in vitamin E box. Experimental method is simple, fast, reproducible. The linear range is 40 ~ 120μg / ml. r = 0.9997, recovery 100.1% (n = 5), RSD = 0.84%. Suitable for quality control of the preparation.