冶金分析
冶金分析
야금분석
METALLURGICAL ANALYSIS
2001年
1期
5-6,4
,共3页
锗%苯基荧光酮%酒石酸%胶束混合配位络合物%分光光度法
鍺%苯基熒光酮%酒石痠%膠束混閤配位絡閤物%分光光度法
타%분기형광동%주석산%효속혼합배위락합물%분광광도법
有CTMAB和TritonX-100存在下和在pH4.5的NaAc-HAc缓冲介质中,Ge(Ⅳ)与酒石酸(Tar)和苯基荧光酮(PF)形成胶束混合配位络合物,在0.82mol/L HCl介质中,络合物至少可稳定6h。测得络合物组成比为Ge(Ⅳ)∶Tar∶PF=1∶2∶2。其最大吸收波长在505nm处,表观摩尔吸光系数ε=1.25×105,Ge(Ⅳ)量在0~0.56mg/L范围符合比尔定律。方法灵敏,选择性较高,用于烟道灰和锌精矿中微量锗的测定,结果满意。
有CTMAB和TritonX-100存在下和在pH4.5的NaAc-HAc緩遲介質中,Ge(Ⅳ)與酒石痠(Tar)和苯基熒光酮(PF)形成膠束混閤配位絡閤物,在0.82mol/L HCl介質中,絡閤物至少可穩定6h。測得絡閤物組成比為Ge(Ⅳ)∶Tar∶PF=1∶2∶2。其最大吸收波長在505nm處,錶觀摩爾吸光繫數ε=1.25×105,Ge(Ⅳ)量在0~0.56mg/L範圍符閤比爾定律。方法靈敏,選擇性較高,用于煙道灰和鋅精礦中微量鍺的測定,結果滿意。
유CTMAB화TritonX-100존재하화재pH4.5적NaAc-HAc완충개질중,Ge(Ⅳ)여주석산(Tar)화분기형광동(PF)형성효속혼합배위락합물,재0.82mol/L HCl개질중,락합물지소가은정6h。측득락합물조성비위Ge(Ⅳ)∶Tar∶PF=1∶2∶2。기최대흡수파장재505nm처,표관마이흡광계수ε=1.25×105,Ge(Ⅳ)량재0~0.56mg/L범위부합비이정률。방법령민,선택성교고,용우연도회화자정광중미량타적측정,결과만의。
In the HAc-NaAc buffer solution at pH 4.5 and in the presence of CTMAB and TritonX-100, germanium(Ⅳ) reacts with tartaric acid (Tar) and phenylfluorone (PF) to form a micellar mixed ligand complex. In the 0.82 mol/L HCl medium, the complex is stable at least for 6h. The composition ratio of Ge(Ⅳ)∶Tar∶PF has been found to be 1∶2∶2. The apparent molar absorptivity is 1.25×105L.mol-1. cm-1 at 505nm. Beer's law is obeyed in the range of 0-0.56mg/L for germanium (Ⅳ). The method is sensitive, selective and has been applied to determine the trace germanium in flue dust and zinc concentrate with satisfactory results.