On-line preconcentration/separation of inorganic arsenic and antimony by poly (aryl ether ketone) containing pendant carboxyl groups prior to microwave plasma atomic spectrometry determinations |
| |
Authors: | Junling Zhang Gang Zhang Chengji Zhao Xinjun Quan Qiong Jia |
| |
Institution: | 1. College of Chemistry, Jilin University, Changchun 130022, PR China;2. Alan G MacDiarmid Institute, College of Chemistry, Jilin University, Changchun 130012, PR China |
| |
Abstract: | A flow injection-column adsorption preconcentration-microwave plasma atomic emission spectrophotometric (FI-column-MP-AES) method is developed for on-line determining trace levels of inorganic arsenic and antimony released from packaging glass containers. The developed methodology involves a micro-column packed with poly (aryl ether ketone) containing pendant carboxyl groups (PEK-L) for adsorption preconcentration procedure before the determination by MP-AES. The main parameters affecting the preconcentration/separation are investigated in details. Under the optimized conditions, the detection limit of the proposed technique is 0.27 μg L? 1 for As and 0.38 μg L? 1 for Sb. Precisions, evaluated as repeatability of results (relative standard deviation with n = 7), are 2.8 and 1.8% respectively for As and Sb. The proposed method has been applied to different reference materials and glass bottle packaging samples with satisfactory results. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|