摘要
本文测定了鞍山地区的芦荟中有机锗和无机锗含量 ,以CTMAB为增溶剂 ,在酸性条件下使锗 苯芴酮络合物稳定地保持在水相中 ,直接测定吸光度。该体系的络合物在 5 30nm处有最大吸收峰 ;线性范围为 0 1~ 0 7μg·mL-1;线性回归方程A =0 0 817+0 86 77c53 0 (μg·mL-1) ;相关系数r =0 9797;检测限为 0 6 5 μg·mL-1。对芦荟样品测定总锗含量为 6 97 0~ 12 19 5ng·g-1之间 ,有机锗含量约占总锗的95 4 5 %~ 98 99% 。
A new spectrophotometric method for the determination of germanium in A. arborescens was developed. The method was based on the fact that germanium forms a stable complex with phenylfluorone in the acidified solution with CTMAB as solubilization agent. The maximum absorption of association complex is at 530 nm, the linear range is 0.1-0.7 mug(.)mL(-1), the regression equation is A = 0.081 7 + 0.867 7c(530), (mug(.)mL(-1)) the correlation coefficient r = 0.917 7, and the limit of detection is 0.65 mug(.)mL(-1). The leaves and stems of A. arborescens were determined by the proposed method. The total amount of germanium is 697.0-1 219.5 ng(.)g(-1) and the content of organic Ge is 95.45%-98.99%. The method is suitable for the analysis of samples which contain both organic Ge and inorganic Ge.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2004年第9期1106-1109,共4页
Spectroscopy and Spectral Analysis
基金
辽宁省教育厅科学技术基金 (2 0 2 4 2 0 1 0 50 )资助课题