Abstract：
BACKGROUND: Herein, a new extraction procedure based on in-situ formation of carbon dioxide-incorporated solid sorbent was introduced for dispersive solid phase extraction of phenolic compounds from aqueous samples. In this study, incorporation of carbon dioxide into the structure of a diamine led to the formation of a solid compound in the sample solution that adsorbed the analytes.
RESULTS: The sample solution was mixed with isophorone diamine and placed under carbon dioxide stream. By doing so, isophorone diamine reacted with carbon dioxide and produced a carbamic acid analogue. It was dispersed into the sample solution as tiny particles that adsorbed the analytes. The adsorbed analytes were eluted by a volatile organic solvent and concentrated more by the vaporization of the eluate. The extraction procedure was done at low temperature to limit the releasing carbon dioxide from the produced compound. To obtain the reliable results, the method was validated and the obtained limits of detection and quantification were in the ranges of 0.29-41 and 0.96-1.3 ng/mL, respectively. Acceptable relative standard deviation (≤7.3%) and coefficient of determination (≥0.994) values confirmed the method repeatability and linearity. High enrichment factors (410-435) and extraction recoveries (82-87%) were attained with the introduced method.
UNASSIGNED: In this work, a chemical reaction was done between isophorone diamine and carbon dioxide in solution. The produced product (sorbent) was insoluble in solution and dispersed in whole parts of the solution as tiny particles. A high contact area between the sorbent and analytes provided high extraction efficiency for the analytes. The method was successful utilized in determining target analytes in real samples and the matrix effect of the samples had no important effect on the obtained results.
RESULTS: The sample solution was mixed with isophorone diamine and placed under carbon dioxide stream. By doing so, isophorone diamine reacted with carbon dioxide and produced a carbamic acid analogue. It was dispersed into the sample solution as tiny particles that adsorbed the analytes. The adsorbed analytes were eluted by a volatile organic solvent and concentrated more by the vaporization of the eluate. The extraction procedure was done at low temperature to limit the releasing carbon dioxide from the produced compound. To obtain the reliable results, the method was validated and the obtained limits of detection and quantification were in the ranges of 0.29-41 and 0.96-1.3 ng/mL, respectively. Acceptable relative standard deviation (≤7.3%) and coefficient of determination (≥0.994) values confirmed the method repeatability and linearity. High enrichment factors (410-435) and extraction recoveries (82-87%) were attained with the introduced method.
UNASSIGNED: In this work, a chemical reaction was done between isophorone diamine and carbon dioxide in solution. The produced product (sorbent) was insoluble in solution and dispersed in whole parts of the solution as tiny particles. A high contact area between the sorbent and analytes provided high extraction efficiency for the analytes. The method was successful utilized in determining target analytes in real samples and the matrix effect of the samples had no important effect on the obtained results.
摘要：
背景：这里，引入了一种基于原位形成二氧化碳掺入的固体吸附剂的新萃取方法，用于从水性样品中分散固相萃取酚类化合物。在这项研究中,将二氧化碳掺入二胺结构中导致在样品溶液中形成吸附分析物的固体化合物。
结果:将样品溶液与异佛尔酮二胺混合并置于二氧化碳流下。通过这样做,异佛尔酮二胺与二氧化碳反应并产生氨基甲酸类似物。它作为吸附分析物的微小颗粒分散到样品溶液中。吸附的分析物用挥发性有机溶剂洗脱，并通过洗脱液的蒸发而浓缩。在低温下进行提取程序以限制从所产生的化合物中释放二氧化碳。为了获得可靠的结果，该方法经过验证，获得的检测限和定量限范围为0.29-41和0.96-1.3ng/mL，分别。可接受的相对标准偏差（≤7.3％）和测定系数（≥0.994）值证实了方法的可重复性和线性。采用该方法可获得较高的富集系数（410-435）和萃取回收率（82-87％）。
■在这项工作中，异佛尔酮二胺和二氧化碳在溶液中进行化学反应。所产生的产物(吸附剂)不溶于溶液,并且作为微小颗粒分散在溶液的整个部分中。吸附剂和分析物之间的高接触面积为分析物提供了高提取效率。该方法已成功用于确定实际样品中的目标分析物，并且样品的基体效应对获得的结果没有重要影响。
结果:将样品溶液与异佛尔酮二胺混合并置于二氧化碳流下。通过这样做,异佛尔酮二胺与二氧化碳反应并产生氨基甲酸类似物。它作为吸附分析物的微小颗粒分散到样品溶液中。吸附的分析物用挥发性有机溶剂洗脱，并通过洗脱液的蒸发而浓缩。在低温下进行提取程序以限制从所产生的化合物中释放二氧化碳。为了获得可靠的结果，该方法经过验证，获得的检测限和定量限范围为0.29-41和0.96-1.3ng/mL，分别。可接受的相对标准偏差（≤7.3％）和测定系数（≥0.994）值证实了方法的可重复性和线性。采用该方法可获得较高的富集系数（410-435）和萃取回收率（82-87％）。
■在这项工作中，异佛尔酮二胺和二氧化碳在溶液中进行化学反应。所产生的产物(吸附剂)不溶于溶液,并且作为微小颗粒分散在溶液的整个部分中。吸附剂和分析物之间的高接触面积为分析物提供了高提取效率。该方法已成功用于确定实际样品中的目标分析物，并且样品的基体效应对获得的结果没有重要影响。
