目的建立保健食品中吡啶甲酸铬含量的测定方法，验证吡啶甲酸铬的稳定性。

Objective To develop a method for determining the content of chromium picolinate in sanitarian food and to validate its stability.

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建立以紫外分光光度法测定果蔬盐中苯甲酸钠含量的方法。该方法操作简便、快捷、成本低、结果准确。

To establish an ultraviolet spectrophotometry for the determination of the sodium benzoate in fruit and vegetable salt. The method is simple, fast, low-cost and accurate.

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方法：采用紫外分光光度法测定滴丸中维甲酸的含量，转篮法考察其体外溶出度。

Methods: Tretinoin in the dropping pills was determined spectrophotometrically and rotating basket method was adopted to determine its dissolution rate.

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