电感耦合等离子体法测定灰岩中的钙镁钾钠铝钛铁锰

Determination of Calcium Magnesium Potassium Sodium Aluminum Titanium and Manganese in Limestone Rock by Using Inductively Coupled Plasma Method

灰岩样品的主要成分为碳酸钙,而镁、钾、钠、铝、钛、铁、锰的含量非常低,测试的灵敏度要求很高。该文采用一次溶矿电感耦合等离子体法直接测试灰岩中的镁、钾、钠、铝、钛、铁、锰。实验表明:在5%的盐酸介质中测试镁、钾、钠、铝、钛、铁、锰能取得很好的效果。通过测试国家标准样品,与国家标准值相比较,分析结果基本一致,准确度和精密度均令人满意,镁、钾、钠、铝、钛、铁、锰元素的相对标准偏差≤0.07%。钙元素的标准偏差≤0.15%。

Major components of limestone samples are calcium carbonate, while the contents of magnesium, potassium, sodium, aluminum, titanium, iron, manganese content are very low. Test requirements are with high sensitivity. By using once dissolved mineral inductively coupled plasma method, magnesium, potassium, sodium, aluminum, titanium, iron and manganese in limestone have been tested directly. As showed in experiments： by using 5% hydrochloric acid, the tests of magnesium, potassium, sodium, aluminum, titanium, iron and manganese can achieve good results. The results are basically the same as national standards. Accuracy and precision are satisfied. Relative standard deviation of magnesium, potassium, sodium, aluminum, titanium, iron and manganese is ≤ 0.07%. Another solution is chosed to determine calcium directly.