[干灰化后与LiBO₂熔融，用ICP-AES法测定生物样品中的硅、铝及其他元素]

[Determination of Si, Al and other in biological samples by ICP-AES with fusion with LiBO2 after dry ashing].

作者信息

Sun De-Zhong, He Hong-Liao, Wen Hong-Li, Ma Sheng-Feng, Gong Ai-Hua, Yin Shao-Quan

机构信息

National Research Center of Geoanalysis, Beijing 100037, China.

出版信息

Guang Pu Xue Yu Guang Pu Fen Xi. 2008 Jan;28(1):195-9.

PMID:18422151

Abstract

An alkaline sample digestion procedure using fusion with lithium metaborate (LiBO2) after dry ashing was developed. Silicon, aluminium and other, a total of 10 elements in different kinds of biological samples, were measured by ICP-AES. The detection limit of this method was 0.15 microg x mL(-1) for Si and 0.03 microg x mL(-1) for Al. The accuracy and precision of the method were demonstrated by analyzing certified reference materials poplar leaves (GBW07604). The precision was less than 3% and the accuracy was -0.03% for Si and -3% for Al. This method was applied to the certification of a series of ten biological reference materials. The results were satisfied.

摘要

建立了一种在干灰化后与偏硼酸锂（LiBO₂）熔融的碱性样品消解方法。采用电感耦合等离子体发射光谱法（ICP-AES）测定了不同生物样品中的硅、铝等共10种元素。该方法对硅的检出限为0.15 μg·mL⁻¹，对铝的检出限为0.03 μg·mL⁻¹。通过分析标准参考物质杨树叶（GBW07604）验证了该方法的准确性和精密度。硅的精密度小于3%，准确度为-0.03%；铝的精密度小于3%，准确度为-3%。该方法应用于一系列10种生物参考物质的定值，结果令人满意。