Recent advances in application and progress of advanced materials as adsorbents in sample preparation for plant growth regulators

Abstract

Plant growth regulators are a class of physiologically active substances that could modify or regulate basic physiological processes in the plant and defense against abiotic and biotic stresses, including natural plant growth regulators and synthetic ones. Different from natural plant growth regulators with low content and high cost of extraction in plants, synthetic ones can be produced in large‐scale production and widely used in agriculture for increasing and securing yield and quality of the harvested produce. However, like pesticides, the abuse of plant growth regulators will have negative impacts on human beings. Therefore, it is important to monitor plant growth regulators residues. Due to the low concentration of plant growth regulators and complex matrices of food, it is necessary to isolate and extract plant growth regulators by appropriate adsorbents in sample preparation for obtaining satisfactory results. In the last decade, several advanced materials as adsorbents have shown superiority in sample preparation. This review briefly introduces the recent application and progress of advanced materials as adsorbents in sample preparation for extraction of plant growth regulators from the complex matrix. In the end, the challenge and outlook about the extraction of plant growth regulators of these advanced adsorbents in sample preparation are presented.

Chemical and Physical Architecture of Macromolecular Gels for Fracturing Fluid Applications in the Oil and Gas Industry; Current Status, Challenges, and Prospects

“…ABn-type polycondensation initially employing AB 2 -type monomers is common for hyperbranched polymer synthesis, promoting increased monomer utilization. Monomers commonly employed include propylene glycol, trimethylolpropane, and AB 3 -type monomers [116], as well as AB 4 -type monomers such as ethylenediamine, pentaerythritol, and p-diaminobenzene. Rousseau et al synthesized a hyperbranched polymer from ethanolamine and methyl acrylate [117].…”