Musarurwa Herbert, Tavengwa Nikita Tawanda
Department of Chemistry, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa.
Department of Chemistry, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa.
Talanta. 2021 Feb 1;223(Pt 1):121507. doi: 10.1016/j.talanta.2020.121507. Epub 2020 Aug 26.
Green solvents reduce secondary pollution of the environment during pesticide pre-concentration in food and environmental matrices. Ionic liquids are among the green solvents that are widely used during pesticides analysis. Their physico-chemical properties can be easily modified by changing the cation/anion combinations in their structures. This paper critically reviews the application of ionic liquids during pre-concentration of pesticides in food and environmental samples. Another group of green, designer solvents is composed of deep eutectic solvents. They are synthesised simply by mixing hydrogen bond donors and hydrogen bond acceptors. Their contributions during pesticide pre-concentration are reviewed critically in this paper. The use of supramolecular solvents during pesticide pre-concentration is gaining popularity among researchers. They are green, water-immiscible solvents composed of three-dimensional amphiphilic aggregates and their applications during pesticide pre-concentration are reviewed in this paper. The amount of chemicals used during pesticide analysis can be reduced by using switchable solvents. This paper also gives a critical review of the applications of switchable solvents during micro-extraction of pesticides in food and environmental samples. In addition, the challenges associated with the use of these green solvents are discussed in this review as well as the future prospects.
绿色溶剂可减少在食品和环境基质中对农药进行预浓缩过程中产生的二次环境污染。离子液体是农药分析过程中广泛使用的绿色溶剂之一。通过改变其结构中的阳离子/阴离子组合，可轻松改变其物理化学性质。本文对离子液体在食品和环境样品中农药预浓缩过程中的应用进行了批判性综述。另一类绿色的定制溶剂是由低共熔溶剂组成。它们只需通过混合氢键供体和氢键受体即可合成。本文对它们在农药预浓缩过程中的贡献进行了批判性综述。超分子溶剂在农药预浓缩过程中的应用在研究人员中越来越受欢迎。它们是由三维两亲聚集体组成的绿色、与水不混溶的溶剂，本文对其在农药预浓缩过程中的应用进行了综述。使用可切换溶剂可减少农药分析过程中使用的化学试剂用量。本文还对可切换溶剂在食品和环境样品中农药微萃取过程中的应用进行了批判性综述。此外，本综述还讨论了使用这些绿色溶剂所面临的挑战以及未来前景。
