火焰原子吸收法间接测定植物中的硫  

INDIRECT DETERMINATION OF SULPHUR IN PLANT TISSUES BY FLAME ATOMIC ABSORPTION SPECTROMETRY

作　　者：何承顺[1] 汪军[1] 范晖 

机构地区：[1]山东农业大学中心实验室

出　　处：《光谱学与光谱分析》1998年第2期223-226,共4页Spectroscopy and Spectral Analysis

摘　　要：根据植物中的硫消化后，消化液中的ＳＯ２－４与ＢａＣｒＯ４悬浊液反应释放出ＣｒＯ２－４，用火焰原子吸收法间接测定ＳＯ２－４。本文研究了影响试样消化液中ＳＯ２－４定量测定的各种条件，通过加入一定量的钙，解决了大量共存ＰＯ３－４的干扰。与电感耦合等离子体发射光谱法进行结果对照，基本一致。The sulphur in plant tissues was transformed into SO 2- 4 by digestion and it reacted on BaCrO 4 to produce CrO 2- 4 by exchange reaction,then the sulphur quantity in the plant was indirectly determined by flame atomic absorption spectrometry (FAAS).Various conditions affecting the quantative determination of SO 2- 4 with this method were studied and the interference of PO 3- 4,which existed in the digestion solution,could be overcome by addition of sufficient calcium.The results obtained by this method are consistent with those obtained by ICP AES.

关 键 词：FAAS 间接测定 植物材料 硫 作物 缺硫症 测定 

分 类 号：Q946.914[生物学—植物学]