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首页> 外文会议>Environmental security assessment and management of obsolete pesticides in Southeast Europe >Possible Use of Certain Mineral Raw Materials of Moldova for DDTs and HCHs Adsorption from Aqueous Solutions
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Possible Use of Certain Mineral Raw Materials of Moldova for DDTs and HCHs Adsorption from Aqueous Solutions

机译：摩尔多瓦某些矿物原料可能用于滴滴涕和六氯环己烷从水溶液中的吸附

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摘要

Estimation of the possibility of use mineral raw materials for adsorption of some chlorinated pesticides (DDT and metabolites, HCH-isomers) from "spiked" water solutions was the aim of this study. Certain mineral raw materials, occurring at the area of Moldova (tripolites, bentonites, diatomites etc.), were used as accessible adsorbents during laboratory experiments. For that scope, the "spiked" water solution containing DDTs and HCHs were prepared. "Spiking" of water solution was fulfilled taking into account water solubility of the analytes of interest, their maximum allowed concentration in water, instrumental limit of detection and limit of quantification. During lab experiments the "spiked" solution has been mixed with the adsorbents. Then after separation the concentration of the analytes in adsorbents and water solution was analyzed. Sample preparation was carried out by means of liquid-liquid extraction, solid-phase extraction, microwave assisted extraction, while analytical determination - by gas chromatography with mass-detection. For determination of sorption parameters of mineral sorbents gas adsorption analyses has also been performed. As a result, the experimental data have been collected, proving that Moldavian mineral raw materials demonstrate adsorption efficiency regarding DDT and metabolites. Finally, tripolites showed the best adsorption efficiency amongst all studied mineral raw materials.
机译：估计使用矿物原料从“尖峰”水溶液中吸附某些氯化农药（DDT和代谢物，六氯环己烷异构体）的可能性是本研究的目的。在摩尔多瓦地区存在的某些矿物原料（三方沸石，膨润土，硅藻土等）被用作实验室实验中可及的吸附剂。在此范围内，制备了含有滴滴涕和六氯环己烷的“加标”水溶液。考虑到目标分析物的水溶性，它们在水中的最大允许浓度，仪器的检测极限和定量极限，可以实现“加标”水溶液。在实验室实验过程中，“加标”溶液已与吸附剂混合。然后分离后，分析吸附剂和水溶液中分析物的浓度。通过液-液萃取，固相萃取，微波辅助萃取进行样品制备，同时进行分析测定-通过气相色谱-质谱检测。为了确定矿物吸附剂的吸附参数，还进行了气体吸附分析。结果，收集了实验数据，证明摩尔达维亚矿物原料证明了对DDT和代谢产物的吸附效率。最后，三方沸石在所有研究的矿物原料中显示出最佳的吸附效率。

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