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钡硅是在硅铁中增加钡元素的一种新型铁合金。主要用于铸造工业上作孕育剂。近年来出口销往日本等国。采用化学分析方法测定钡硅中Ba、Al、Ca三元素,只能单个元素分别测定、操作繁琐,时间长。本文采用ICP—AES法在同一溶液顺序测定Ba、Al、Ca三元素,方法简便、快速、准确,能满足该商品检验的需要。 1 试验部分1.1 仪器与试剂 PlasmaⅡ型(美国PERKIN—ELMER公司)顺序扫描式等离子体发射光谱仪高频发生器:27.12MH_z 全息光栅3600条·mm~(-1),波长范围160～400nm,分辨率小于0.009nm,线色散率0.225nm·mm~(-1) 炬管:可拆卸式石英炬管雾化器:交叉型玻璃雾化器计算机:PE7500计算机,PR—210打印机单一元素标准贮备溶液:均由高纯金属或其盐类配制,浓度均为1mg·ml~(-1)。铁基体溶液:称取基准纯铁2.000g,加盐酸(1+1)15ml,低温加热溶解,冷却,移入100ml量瓶中,用水定容。此溶液Fe 20mg·ml~(-1)。硝酸、氢氟酸、高氯酸、盐酸均为优级纯
Barium silicon is a new type of ferroalloy that increases barium in ferrosilicon. Mainly used for casting industry as inoculant. In recent years, exports are exported to Japan and other countries. Determination of Ba, Al, Ca three elements in barium silicon by chemical analysis method, only a single element were determined, the operation cumbersome, a long time. In this paper, ICP-AES method for the determination of Ba, Al, Ca three elements in the same solution, the method is simple, fast and accurate, to meet the needs of the commodity inspection. 1 Experimental 1.1 Instruments and Reagents Plasma II (PERKIN-ELMER, USA) Sequential Scanning Plasma Emission Spectrometer High Frequency Generators: 27.12MH_z Holographic Grating 3600 · mm -1, Wavelength Range 160 ~ 400nm, Resolution Less than 0.009nm, Line Dispersion 0.225nm · mm -1 Torch: Detachable Quartz Torch Nebulizer: Cross Glass Atomizer Computer: PE7500 Computer, PR-210 Printer Single Element Standard Stock Solution: All of them were prepared from high purity metals or their salts at concentrations of 1 mg · ml -1. Iron base solution: Weigh the reference pure iron 2.000g, add hydrochloric acid (1 + 1) 15ml, low temperature heating to dissolve, cooling, into 100ml volumetric flask, water volume. This solution Fe 20mg · ml ~ (-1). Nitric acid, hydrofluoric acid, perchloric acid, hydrochloric acid are excellent grade pure