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用吸光光度法分析了丁二烯电化学合成山梨酸的中间产物乙酰氧基己烯酸 (AA)。试验表明 ,AA测定的线性范围为 0～ 10 .1μg/ 10ml ,最大吸收波长λmax为 5 30nm ,摩尔吸光系数为 7 64× 10 4 L·mol- 1·cm- 1。催化剂CuCl最佳用量为 0 .75 μg/ 10ml ,最佳pH为 2 .7～ 3.3,温度条件为 2 7～37℃ ,水解时间为 30min ,样品测定结果满意 ,回收率达 92 .6%～ 10 3.2 %。
The acetoxy hexenoic acid (AA), an intermediate of sorbic acid for the electrochemical synthesis of butadiene, was analyzed by spectrophotometry. The results showed that the linear range of AA was 0-10.1μg / 10ml, the maximum absorption wavelength λmax was 530nm and the molar absorptivity was 7 64 × 10 4 L · mol -1 · cm -1. The best dosage of CuCl was 0.75 μg / 10ml, the optimal pH was 2.7 ~ 3.3, the temperature was 27 ℃ ~ 37 ℃, the hydrolysis time was 30min, the result of the sample was satisfactory and the recovery rate was 92.6% 10 3.2%.