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钾长石的化学成分主要是二氧化硅、三氧化二铝和氧化钾,其次是三氧化二铁、氧化锰、氧化钠、氧化镁、氧化钙和二氧化钛。二氧化硅的含量一般在60％左右,三氧化二铝和氧化钾为百分之十几,而三氧化二铁、氧化锰和氧化镁等则在0.001％～0.1％之间,含量之间差别很大。利用化学法,比色法或原于吸收光谱法测定钾长石的某些元素已有报道,但同时测定这些含量差别很大的多种化学成分,目前报道很少。本文提出了ICP-AES法同时测量钾长石中多种元素的分析方法。该法简单、准确、快速、可靠,适合大批样品的分析。 1 试验部分
The chemical composition of potash feldspar is mainly silica, aluminum oxide and potassium oxide, followed by ferric oxide, manganese oxide, sodium oxide, magnesium oxide, calcium oxide and titanium dioxide. The content of silica is generally about 60%, aluminum oxide and potassium oxide for more than ten percent, while the ferric oxide, manganese oxide and magnesium oxide, etc. are between 0.001% to 0.1%, between the content differ greatly. Although some elements of K-feldspar have been reported by chemical method, colorimetric method or the original absorption spectrometry, there are few reports on the simultaneous determination of many chemical compositions with different contents. This paper presents a method for simultaneous determination of various elements in potash feldspar by ICP-AES. The method is simple, accurate, fast and reliable, suitable for a large number of sample analysis. 1 experimental part