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铁和锌是人体及植物生长必需的微量元素,其分析方法倍受关注。中草药因毒副作用小,富含人体所需的多种微量元素,成为人们进行身体保健、治疗疾病的首选。甘草片剂是广泛使用的一种中草药,它具有镇咳、平喘的作用。为了测定甘草片剂中的微量元素,采用火焰原子吸收光谱法绘制了铁和锌的标准曲线,对甘草片剂进行了消解,测定了铁和锌的含量,并通过加标回收的方法,得出该测定方法简单可行,精密度和灵敏度高,相对标准偏差为0.236%~0.718%,回收率为94.5%~98.5%。
Iron and zinc are necessary trace elements for human and plant growth, and their analytical methods have received much attention. Due to its small toxic and side effects, Chinese herbal medicine is rich in many trace elements needed by the human body and becomes the first choice for people to take care of the body and treat diseases. Licorice tablet is a widely used Chinese herbal medicine, which has antitussive and antiasthmatic effects. In order to determine the trace elements in the licorice tablet, the standard curves of iron and zinc were drawn by flame atomic absorption spectrometry. The licorice tablets were digested and the content of iron and zinc was determined. The content of iron and zinc was obtained by adding the standard recovery method. The determination method is simple and feasible, with high precision and sensitivity. The relative standard deviation is 0.236%~0.718%, and the recovery rate is 94.5%~98.5%.