紫硇砂及其3种炮制品中硫的含量测定及比较

Determination and Comparison of Sulfur Contents in Halite Violaceous and its 3 kinds of Processed Products

目的:探讨不同炮制方法对紫硇砂中硫含量的影响。方法:采用紫外分光光度法在276 nm处测定紫硇砂生品及其3种不同炮制品中硫的含量。结果:硫在1～30μg·ml^(-1)浓度范围内具有良好的线性关系(r=1.000 0),平均回收率为101.09%,RSD=2.37%(n=6)。紫硇砂生品中硫的含量为111.05μg·g^(-1),3种不同炮制品中硫的含量分别为:水煮法为14.37μg·g^(-1),隔水醋制浮霜Ⅰ法为21.11μg·g^(-1),隔水醋制浮霜2法为36.90μg·g^(-1),直火醋制法为42.40μg·g^(-1)。结论:紫硇砂隔水醋制浮霜2法炮制品和直火醋制炮制品中硫的含量显著低于生品,但明显高于水煮法炮制品,这可能与降低紫硇砂的毒性,又保留紫硇砂治疗作用有一定的关联性。

Objective： To investigate the effects of different processing methods on sulfur contents in halite violaceous. Method： Sulfur contents in halite violaceous and its 3 kinds of processed products were determined by ultraviolet spectrophotometry with detection wavelength of 276 nm. Result ： The linear range of sulfur concentration was 1-30μg·g-1 （ r = 1. 000 0 ）. The average recovery was 101.19% and RSD was 2. 37% （n = 6）. Sulfur content in halite violaceous was 111.05μg·g-1 ,and sulfuric content in the processed products was 14. 37μg·g-1（ water boiling method） ,21.11μg·g-1（the first method of vinegar float frost in water） ,36. 90μg·g-1（ the second method of vinegar float frost in water） and 42.40μg·g-1 （direct-flame vinegar processing） , respectively. Conclusion： Sulfur contents in the products processed by the second method of vinegar float frost in water and the direct-flame vinegar processing were both lower than that in crude product of Halite Violaceous, while higher than that in the product processed by water boiling method, which may have relevance with degrading toxicity while remaining curative effect of halite violceous.