Jaffe R, Fernandez C A, Alvarado J
Laboratorio de Geoquímica y Química Ambiental, Universidad Simón Bolívar, Departamento de Quimica, Apartado 89000, Caracas 1080-A, Venezuela.
Talanta. 1992 Feb;39(2):113-7. doi: 10.1016/0039-9140(92)80004-w.
Eight octocoral species from two reefs off the Venezuelan coast were analyzed to determine their Cd, Cu, Ni, Pb and Zn content. A microwave sample work-up procedure, including drying and acid digestion, was developed and found to be faster and more convenient than conventional methods. Accurate and precise results were obtained for the determination of the metals of interest, using graphite furnace atomic-absorption spectrometry (GFAAS) with L'vov platforms. The accuracy of the results was checked against synthetic standards prepared to simulate the matrix of the analyzed octocoral species. Standard deviation values for synthetically prepared standards were less than 1% in all cases. On the other hand, standard deviations for sample results were considerably higher due to heterogeneity of the samples and environmental conditions at the sampling sites.
对委内瑞拉海岸外两个珊瑚礁的8种八放珊瑚物种进行了分析，以确定它们的镉、铜、镍、铅和锌含量。开发了一种微波样品预处理程序，包括干燥和酸消解，发现该程序比传统方法更快、更方便。使用带里沃夫平台的石墨炉原子吸收光谱法（GFAAS）测定目标金属，获得了准确和精确的结果。根据为模拟分析的八放珊瑚物种的基质而制备的合成标准物质对结果的准确性进行了检验。在所有情况下，合成标准物质的标准偏差值均小于1%。另一方面，由于样品的不均匀性和采样地点的环境条件，样品结果的标准偏差要高得多。
