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首页> 外文期刊>Journal of the Brazilian Chemical Society >A Straightforward Method for Determination of Al and Na in Aluminosilicates Using ICP OES
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A Straightforward Method for Determination of Al and Na in Aluminosilicates Using ICP OES

机译：ICP OES直接测定铝硅酸盐中铝和钠的方法

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摘要

The improvements on aluminosilicates dissolution through microwave-assisted acid decomposition procedures for Na and Al quantification by inductively coupled plasma optical emission spectrometry (ICP OES) are reported here. Complete dissolution of the samples is achieved employing 4 mL of HNO 3 and 3-4 mL of HF thus reducing the total amount of these reactants in comparison with procedures found in the literature. Additionally, the type of crucibles used in the calcination for sample preparation step is also evaluated. Na and Al concentrations are in agreement with the expected values on the samples. Estimated silicon amount is achieved by difference of sodium and aluminum, and then Si/Al molar ratios were calculated for samples calcined in both porcelain (Si/Al is in the range 22-42) and platinum (Si/Al is in the range 27-40) crucibles, showing no difference between these procedures.
机译：本文报道了通过微波辅助酸分解程序通过电感耦合等离子体发射光谱法（ICP OES）定量分析Na和Al对铝硅酸盐溶解的改进。使用4 mL的HNO 3和3-4 mL的HF可以完全溶解样品，因此与文献中的方法相比，这些反应物的总量减少了。另外，还评估了用于样品制备步骤的煅烧中使用的坩埚的类型。 Na和Al的浓度与样品的预期值一致。通过钠和铝的差异获得估计的硅含量，然后计算在瓷（Si / Al范围为22-42）和铂（Si / Al范围为27）中煅烧的样品的Si / Al摩尔比-40）坩埚，这些程序之间没有区别。

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