电感耦合等离子体原子发射光谱法测定水泥用灰岩中的CaO、MgO

Determination of CaO and MgO in Cement Limestone by Inductively Coupled Plasma Atomic Emission Spectrometry

中文关键词:  电感耦合等离子体原子发射光谱法  水泥  灰岩  CaO  MgO

英文关键词:ICP-AES  cement  limestone  CaO  MgO

中文摘要:

      采用盐酸-硝酸-氢氟酸-高氯酸分解样品，电感耦合等离子体原子发射光谱法（ICP-AES）同时测定水泥用灰岩中的CaO、MgO含量.根据CaO、MgO的性质及含量高低配制了不同的系列标准溶液，确定了元素的最佳分析谱线.CaO、MgO校准曲线的相关系数分别为0.999 9和0.999 5，方法检出限分别为0.009 0%和0.004 0%.对灰岩标准样品进行精密度考察，CaO、MgO测定结果的相对标准偏差（RSD，n=12）分别为0.12%和2.87%.所建方法应用于灰岩标准物质和实际样品的测定，结果与标准物质认定值或实际样品的X-射线荧光光谱分析（XRF）值基本一致.

英文摘要:

      The sample was decomposed with hydrochloric acid-nitric acid-hydrofluoric acid-perchloric acid. Then,the content of CaO、MgO in cement limestone was simultaneously determined using inductively coupled plasma atomic emission spectrometry(ICP-AES). According to the properties of CaO and MgO,different series of standard solutions were prepared,and the best analytical lines for the elements were determined. The correlation coefficients of calibration curves of CaO and MgO were 0.999 9 and 0.999 5 respectively. The detection limit was 0.009 0% and 0.004 0%, respectively. The limestone standard sample was used for the precision test,the relative standard deviations (RSD,n=12) of CaO and MgO were 0.12% and 2.87%,respectively. The proposed method was applied to the determination of certified reference material and real samples of limestone,and the results were basically consistent with the certified values of certified reference material or the X-ray fluorescence(XRF) value of the actual sample.