On-site extraction of benzophenones from swimming pool water using hybrid tapes based on the integration of hydrophilic-lipophilic balance microparticles and an outer magnetic nanometric domain.

An on-site extraction device is presented consisting of scotch tape modified with concentric domains of micrometric hydrophilic-lipophilic balance (HLB) particles surrounded by a ring of nanometric magnetic ones. On the one hand, HLB microparticles are readily available at the surface of the tape, exposed to interact with the target analytes, being responsible for the extraction capacity of the sorptive phase. On the other hand, the presence of magnetic nanoparticles enables the attachment of the modified tape onto a metallic screw via a magnet, which is then coupled to a wireless drill, enabling the stirring of the microextraction device.

The potential of lignocellulosic biomass for magnetic solid phase extraction of naproxen from saliva samples.

This paper presents a study on the application of magnetic biochars derived from three distinct biomass sources: almond (AMBC), walnut (WMBC), and peanut (PMBC) shells for magnetic solid-phase extraction (MSPE) of naproxen, a non-steroidal anti-inflammatory drug, from human saliva prior to LC-MS analysis. The three magnetic biochars were synthesized and characterized through IR, XRD, SEM, and EDX analyses. This work explored the factors influencing extraction efficiency using these three bioadsorbents through experimental design.

Green magnetic snail shell hydroxyapatite sorbent for reliable solid-phase extraction of pesticides from water samples.

To address sustainability issues, the green synthesis of nanomaterials has recently received considerable attention. This article addresses a novel and cost-effective adsorbent for the extraction of eight phenyl-N-methylcarbamate insecticides from water samples. We first synthesized a magnetite/hydroxyapatite nanocomposite using snail shell powder via an environmental friendly approach.

Natural Resources Exploitation in Sulfate-Resisting Portland Cement Manufacturing: Towards Quality Improvement and Reduction of Environmental Impact.

Sulfate-resisting SR) Portland cement is commonly used in building works to improve concrete's durability against external sulfate attack. This attack is considered a very serious chemical aggression that causes damage and cracking of concrete structures. These special cements have a very particular mineralogical composition, CA ≤ 3% and (2CA + CAF) ≤ 20%, which makes the cementitious matrix resistant to sulfate attack.

Structural Study of Europium Doped Gadolinium Polyphosphates LiGd(PO) and Its Effect on Their Spectroscopic, Thermal, Magnetic, and Optical Properties.

Alkali metal-rare earth polyphosphates LiGdEu(PO) (LGP:Eu) (where x= 0, 0.02 and 0.04) were synthesized by solid-state reaction.

Synthesis and characterization of chitosan-coated titanate nanotubes: towards a new safe nanocarrier.

In this work, we discuss for the first time the elaboration of nanohybrid materials, intended for drug delivery systems, based on titanate nanotubes (TiONts) coated with chitosan polymer (CT). Chitosan has been used to enhance the biocompatibility of hydrothermally synthesized nanotubes in biological medium as a substitute for the polyethylene glycol (PEG) that is generally used for biocompatibility. CT grafting was carried out using two different approaches; the first was made by a covalent bond using two intermediate molecules, and the second is based on electrostatic interactions between CT and TiONts.