【摘要】 利用ZnS悬浮液与谷氨酸在碱性条件下生成可溶性谷氨酸锌络合物 ,研究了塞曼原子吸收间接测定谷氨酸的方法 ;谷氨酸测定的质量浓度线性范围为0～3g·L-1,特征质量浓度为27.3mg·L-1;该法可用于调味品中的谷氨酸或谷氨酸钠的测定 ,其相对标准偏差为0.4 %(n=7) ,方法的回收率在97 %～103%之间更多还原

【Abstract】 In basic condition zinc sulfide in suspension quantitatively reacts with glutamic acid forming a soluble complex of zinc glutamate.An indirect method for the determination of glutamic acid was established by Zeeman flame atomic absorption spectrometry in view of the above.The method can be used for the determination of gluˉtamic acid or sodium glutamate in condiment.The linear range and characteristic concentration of the method are0～3g/L and27.3mg/L,respectively.The recovery of97%～103%and RSD of0.4%(n=7)are obtained.更多还原