Practical issues relating to soil column chromatography for sorption parameter determination

被引：26
作者：
Bi, Erping [1 ,2 ,3 ]
Schmidt, Torsten C. [3 ,4 ]
Haderlein, Stefan B. [3 ]
机构：
[1] China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing 100083, Peoples R China
[2] China Univ Geosci Beijing, Beijing Key Lab Water Resources & Environm Engn, Beijing 100083, Peoples R China
[3] Univ Tubingen, Ctr Appl Geosci, D-72074 Tubingen, Germany
[4] Univ Duisburg Essen, D-47048 Duisburg, Germany
来源：
CHEMOSPHERE | 2010年 / 80卷 / 07期
关键词：
Sorption; Soil column chromatography; Soil column packing; Eurosoil; Half mass; Heterocyclic aromatic compounds; PARTITION-COEFFICIENTS; PROCESS IDENTIFICATION; LIQUID-CHROMATOGRAPHY; ORGANIC-CHEMICALS; SOLUTE TRANSPORT; POROUS-MEDIA; NONEQUILIBRIUM; MODEL; GROUNDWATER; ADSORPTION;
D O I：
10.1016/j.chemosphere.2010.05.006
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Determination of sorption distribution coefficients (K(d)) of organic compounds by a dynamic soil column chromatography (SCC) method was developed and validated. Eurosoil 4, quartz, and alumina were chosen as exemplary packing materials. Heterocyclic aromatic compounds were selected in the validation of SCC. The prerequisites of SCC with regard to column dimension, packing procedure, and sample injection volume are discussed. Reproducible soil column packing was achieved by addition of a pre-column and an HPLC pump for subsequent compression of the packed material. Various methods to determine retention times from breakthrough curves are discussed and the use of the half mass method is recommended. To dilute soil with inert material can prevent column-clogging and help to complete experiments in a reasonable period of time. For the chosen probe compounds, quartz rather than alumina proved a suitable dilution material. Non-equilibrium issue can be overcome by conducting the experiments under different flowrates and/or performing numerical simulation. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：787 / 793
页数：7
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