氟化钙作为激光烧蚀-电感耦合等离子体质谱法（LA-ICP-MS）定量分析的主要基质：一项可行性研究。
Calcium fluoride as a dominating matrix for quantitative analysis by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS): A feasibility study.
机构信息
Laser Technologies Group, Energy Storage & Distributed Resources Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA, 94720, USA; National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki, 305-8563, Japan.
Laser Technologies Group, Energy Storage & Distributed Resources Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA, 94720, USA; Applied Spectra, 46665 Fremont Blvd., Fremont, CA, 94538, USA.
出版信息
Anal Chim Acta. 2020 Sep 8;1129:24-30. doi: 10.1016/j.aca.2020.07.002. Epub 2020 Jul 18.
Calcium fluoride formed by the reaction between ammonium bifluoride and calcium chloride was investigated as a dominating matrix for quantitative analysis by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Transformation from a solid sample to the calcium fluoride-based matrix permitted quantitative analysis based on calibration standards made from elemental standards. A low abundance stable calcium isotope, i.e. Ca, was monitored as the internal standard for quantitative analysis by LA-ICP-MS. Correlation coefficient factors for multiple elements were obtained with values over 0.999. The results for multiple elements in a certified reference material of soil (NIST SRM 2710a) agreed with the certified values in the range of expanded uncertainty, indicating the present method was valid for quantitation of elements in solid samples.
研究了由氟化氢铵和氯化钙反应生成的氟化钙作为激光烧蚀电感耦合等离子体质谱（LA-ICP-MS）定量分析的主要基质。通过将固体样品转化为基于氟化钙的基质，可以基于元素标准制备的校准标准进行定量分析。低丰度稳定的钙同位素，即 Ca，被监测为 LA-ICP-MS 定量分析的内标。多个元素的相关系数因子均大于 0.999。在土壤标准物质（NIST SRM 2710a）中的多个元素的测定结果与扩展不确定度范围内的证书值相符，表明该方法适用于固体样品中元素的定量分析。
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