Kanicky V, Mermet J M
Department of Anal. Chemistry, Masaryk University, Kotlarska 2, CZ-61137, Brno, Czech Republic.
Anal Bioanal Chem. 1996 Jul;355(7-8):887-8. doi: 10.1007/s0021663550887.
Included (Si, Ca) and added (Li, B) internal standards (IS) have been used comparatively in LA-ICP-AES of silicates and limestones to improve both precision and accuracy. A Q-switched Nd:YAG laser (355 nm, 10 Hz, 10 mJ per shot) has been applied for ablation. Samples have been prepared by fusion with Li(2)B(4)O(7) and measured using a Perkin-Elmer Optima 3000 ICP system. Both types of IS have given a relative standard deviation (RSD) less than 2-1%, which improved the repeatability by a factor of 2-10 and calibration graphs have been linear over the whole concentration range.
在硅酸盐和石灰石的激光烧蚀电感耦合等离子体发射光谱分析（LA-ICP-AES）中，已对包含的（硅、钙）和添加的（锂、硼）内标（IS）进行了比较使用，以提高精密度和准确度。已应用调Q钕：钇铝石榴石激光（355纳米，10赫兹，每次脉冲10毫焦）进行烧蚀。样品通过与Li₂B₄O₇熔融制备，并使用珀金埃尔默Optima 3000 ICP系统进行测量。两种类型的内标均给出了小于2%至1%的相对标准偏差（RSD），将重复性提高了2至10倍，并且校准曲线在整个浓度范围内呈线性。
