Eggshell Membrane Microcolumn Solid-Phase Extraction and Determination of Trace Gold in Geological Samples by Inductively Coupled Plasma Mass Spectrometry
Hubei Provincial Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [2008CDA100]; Geological Survey of ChinaChina Geological Survey [1212011120266]
机构署名：
本校为第一且通讯机构
院系归属：
化学与环境工程学院
摘要：
A chicken eggshell membrane (ESM) was used as a solid-phase extraction adsorbent for the separation and preconcentration in combination with inductively coupled plasma-mass spectrometry (ICP-MS) for the determination of trace gold in geological samples. Gold (Au) was quantitatively separated and preconcentratcd in 1.2 mol L-1 HC1 at a sample flow rate of 2.0 mL min.1 using the ESM microcolumn system. The gold adsorbed on the microcolumn was effectively eluted with a mixture of 1% thiourea and 0.12 mol L1 HCL The effects of acid concentration, sample flow rate and volume, eluent conditions and ...
