Bosch Ojeda C, Sánchez Rojas F, Cano Pavón J M
Department of Analytical Chemistry, Faculty of Sciences, University of Málaga, E-29071, Málaga, Spain.
Ann Chim. 2006 Nov-Dec;96(11-12):707-14. doi: 10.1002/adic.200690073.
A method of determining trace levels of platinum and rhodium in different samples was investigated. The method involves separation and preconcentration of the platinum and rhodium from the matrix by flow injection (FI) on-line coupled with electrothermal atomic absorption spectrometry (ETAAS) with Zeeman effect background correction. Platinum and rhodium were adsorbed on a microcolumn packed with 1,5-bis(di-2-pyridyl)methylene thiocarbohydrazide immobilized on silica gel (DPTH-gel). The sorbed metals were directly eluted with nitric acid into the graphite furnace and determined by AAS.
研究了一种测定不同样品中痕量铂和铑的方法。该方法包括通过流动注射（FI）在线与具有塞曼效应背景校正的电热原子吸收光谱法（ETAAS）联用，从基质中分离和预富集铂和铑。铂和铑吸附在填充有固定在硅胶上的1,5-双（二-2-吡啶基）亚甲基硫代碳酰肼（DPTH-凝胶）的微柱上。吸附的金属用硝酸直接洗脱到石墨炉中，并用原子吸收光谱法测定。
