新的土壤中烷基酚和烷基酚聚氧乙烯醚的测定的样品处理方法。
New sample treatment for the determination of alkylphenols and alkylphenol ethoxylates in agricultural soils.
机构信息
Research Group of Analytical Chemistry and Life Sciences, Department of Analytical Chemistry, Faculty of Sciences, University of Granada, Granada, Spain.
出版信息
Chemosphere. 2010 Jun;80(3):248-55. doi: 10.1016/j.chemosphere.2010.04.032. Epub 2010 May 10.
A new sample treatment for alkylphenols (AP) and alkylphenol ethoxylates (APEO) determination in agricultural soil samples has been developed. In a first stage these compounds were isolated from soil by pressurized liquid extraction (PLE) using methanol. In a second stage the extracts were cleaned up and pre-concentrated by solid-phase extraction (SPE) using ENV+cartridges. The effect of different variables on PLE and SPE was also studied. In the last place, separation and quantification of analytes were performed by liquid chromatography with fluorescence detection (LC-FD) and gas chromatography coupled to mass spectrometry (GC-MS). Quantification limits (QL) ranged from 20 to 200 ng g(-1) for LC-FD and from 3 to 126 ng g(-1) for GC-MS. This method was satisfactorily applied in a study field designed to evaluate the environmental behaviour of APEOs in agricultural soils.
一种新的用于测定农业土壤样品中烷基酚（AP）和烷基酚聚氧乙烯醚（APEO）的样品处理方法已经开发出来。在第一阶段，这些化合物通过加压液体萃取（PLE）用甲醇从土壤中分离出来。在第二阶段，使用 ENV+小柱通过固相萃取（SPE）对提取物进行净化和预浓缩。还研究了不同变量对 PLE 和 SPE 的影响。最后，通过液相色谱-荧光检测（LC-FD）和气相色谱-质谱联用（GC-MS）对分析物进行分离和定量。LC-FD 的定量限范围为 20 至 200ng/g，GC-MS 的定量限范围为 3 至 126ng/g。该方法在一个旨在评估 APEOs 在农业土壤中环境行为的田间研究中得到了满意的应用。
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