冶金分析
冶金分析
야금분석
METALLURGICAL ANALYSIS
2010年
4期
69-72
,共4页
胡珊玲%宋瑞平%林燕%魏友利
鬍珊玲%宋瑞平%林燕%魏友利
호산령%송서평%림연%위우리
EDTA滴定法%镁-锌-钇三元合金%锌%钇%测定
EDTA滴定法%鎂-鋅-釔三元閤金%鋅%釔%測定
EDTA적정법%미-자-을삼원합금%자%을%측정
EDTA titrimetry%magnesium-zinc-yttrium ternary alloy%zinc%yttrium%determination
研究了采用EDTA络合滴定法连续快速测定镁-锌-钇三元合金中各主体成分的方法.控制溶液pH值为5.0～5.5,先以EDTA滴定镁-锌-钇三元合金中的锌钇合量,再在pH值为9.0～9.4时,通过氨水沉淀分离钇后滴定锌的含量,滴定时加入三乙醇铵掩蔽主要干扰元素铁.采用所确定的分析方法对多种组分的三元合金样品进行测定,Zn:Y:Mg=3:1:96时RSD小于3%,Zn:Y:Mg:6:3:91时RSD小于2%,标准加入回收率在98%～100%范围内.
研究瞭採用EDTA絡閤滴定法連續快速測定鎂-鋅-釔三元閤金中各主體成分的方法.控製溶液pH值為5.0～5.5,先以EDTA滴定鎂-鋅-釔三元閤金中的鋅釔閤量,再在pH值為9.0～9.4時,通過氨水沉澱分離釔後滴定鋅的含量,滴定時加入三乙醇銨掩蔽主要榦擾元素鐵.採用所確定的分析方法對多種組分的三元閤金樣品進行測定,Zn:Y:Mg=3:1:96時RSD小于3%,Zn:Y:Mg:6:3:91時RSD小于2%,標準加入迴收率在98%～100%範圍內.
연구료채용EDTA락합적정법련속쾌속측정미-자-을삼원합금중각주체성분적방법.공제용액pH치위5.0～5.5,선이EDTA적정미-자-을삼원합금중적자을합량,재재pH치위9.0～9.4시,통과안수침정분리을후적정자적함량,적정시가입삼을순안엄폐주요간우원소철.채용소학정적분석방법대다충조분적삼원합금양품진행측정,Zn:Y:Mg=3:1:96시RSD소우3%,Zn:Y:Mg:6:3:91시RSD소우2%,표준가입회수솔재98%～100%범위내.
The determination method of components in magnesium-zinc-yttrium ternary alloy was studied by EDTA titrimetry. The content of (Zn+Y) was determined firstly at pH 5.0-5.5. Then, the content of Zn was measured after separating yttrium by ammonia at pH 9.0-9.4. During the titrimetry, triethanolamine was added to mask the interference from iron. The proposed method was applied to the determination of ternary alloy with several components. When the ratio was Zn : Y : Mg =3 : 1 : 96, the relative standard deviation (RSD) was smaller than 3%. When the ratio was Zn: Y : Mg = 6 : 3 : 91, the RSD was smaller than 2%. The standard addition recoveries were 98%-100%.
