提出了氢化物发生-原子荧光光谱法间接测定调味品中谷氨酸的新方法。在碱性条件下,谷氨酸可以与ZnS悬浮液生成可溶性谷氨酸锌络合物,离心分离后用原子荧光光谱法测定上层清液中的锌,从而间接测定谷氨酸。方法的线性范围为0.42—4.00g.L-1;相对标准偏差(RSD)为7.9%;检出限为0.14g.L-1;回收率为85%—92%。方法已用于市售调味品中谷氨酸的测定。 A new method for the indirect determination of glutamic acid in condiments by hydride generation-atomic fluorescence spectrometry was proposed. Under alkaline conditions, glutamic acid can form soluble zinc glutamate complexes with ZnS suspensions. After centrifugation, zinc in the supernatant is determined by atomic fluorescence spectrometry to measure glutamic acid indirectly. The linear range of the method was 0.42-4.00g.L-1, the relative standard deviation (RSD) was 7.9%, the detection limit was 0.14g.L-1 and the recovery was 85% -92%. The method has been applied to the determination of glutamic acid in commercial condiments.