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分析农业土壤中的邻苯二甲酸酯。

Analysis of phthalic acid esters in agricultural soils.

机构信息

Department of Food Technology, Faculty of Agronomy, Mendel University in Brno, Brno, Czech Republic.

Central Institute for Supervising and Testing in Agriculture, Brno, Czech Republic.

出版信息

Environ Monit Assess. 2020 Jan 4;192(2):92. doi: 10.1007/s10661-019-8052-5.

Abstract

The aim of the study was monitoring of phthalic acid esters in agricultural soils of the Czech Republic over the period of 6 years, namely dibutyl phthalate (DBP) and di-2-ethylhexyl phthalate (DEHP). Monitoring took place in twelve regions of the Czech Republic. Soil samples were taken evenly from the top and bottom soil horizons using a zig-zag pattern. Soil samples were taken from arable land, permanent grassland, and hop field. Lyophilisation of the samples was done by ultrasound-assisted extraction using a mixture acetone-hexane (1:1). Phthalic acid esters were analysed using high-performance liquid chromatography with UV detection. Subsequently, the results were statistically compared by analysing the principal components (PCA) to determine the effect of individual factors on the content of phthalic acid esters in agricultural soil. Factors such as precipitation, distance from a pollution source, amount of pesticides, and amount of artificial and organic fertilizers were taken into account. If we compare the concentrations established in this study with the limits set out in the Methodological Instruction of the Ministry of the Environment of the Czech Republic based on RSLs (Regional Screening Levels) issued by the USEPA (United States Environmental Protection Agency), none of these values were exceeded.

摘要

本研究的目的是在 6 年的时间内监测捷克共和国农业土壤中的邻苯二甲酸酯,具体监测物为邻苯二甲酸二丁酯(DBP)和邻苯二甲酸二(2-乙基己基)酯(DEHP)。监测在捷克共和国的十二个地区进行。使用之字形图案从土壤的顶层和底层均匀采集土壤样本。采集的土壤样本来自耕地、永久性草地和啤酒花田。通过超声辅助提取,用丙酮-己烷(1:1)混合物对样本进行冻干。使用高效液相色谱法和紫外检测分析邻苯二甲酸酯。随后,通过分析主成分(PCA)对结果进行统计比较,以确定个别因素对农业土壤中邻苯二甲酸酯含量的影响。考虑了降水、与污染源的距离、农药用量以及人工和有机肥料用量等因素。如果将本研究中确定的浓度与捷克共和国环境部基于 USEPA(美国环境保护署)发布的 RSLs(区域筛选水平)制定的方法指令中规定的限值进行比较,那么这些值均未超标。

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