JBCS

A multiresidue and multiclass method was developed for the determination of current-use pesticides (CUPs) in water samples using solid phase extraction (SPE) with polymeric sorbent and ultra-high performance liquid chromatography with tandem mass spectrometry (UHPLC-MS/MS).

Efficient and reusable adsorbents with pyrochlore structure can be synthesized by a simple route and applied to remove pollutants from aqueous media.

Investigation of polybrominated diphenyl ethers (PBDE) levels in Paranoá Lake sediments revealed higher concentrations attributed to effluent discharges from wastewater treatment plants and storm drainage water systems.

The use of ethanol as a mobile phase allowed good chromatographic separation with excellent evaluation by Green Analytical Chemistry metrics.

From gamma irradiation of molybdenum oxide, reduced oxides (MoO_3-x) were obtained with expansion of the absorption spectral region. With the heterojunction formation between MoO_3-x and cadmium sulfide (CdS) quantum dots, better efficiencies for photocatalytic generation of hydrogen and oxygen are achieved.

Here, we present the validation items studied and the distribution of the estrogen 17α-ethinyl estradiol in suspended particulate matter along a salinity gradient in Guaratuba Bay, South Atlantic, Brazil, during summer and winter.

Homemade diffusive gradients in thin films (DGT) devices prepared with agarose (non-toxic hydrogel) to evaluate the lability of metallic species in Cará-Cará River, Ponta Grossa, Paraná, Brazil.

The Fe-MOFs (metal-organic frameworks) were synthesized via a heat of solution method using ferrous sulfate heptahydrate metal ions and 2,5-dihydroxyterephthalic acid as the organic linker. Subsequently, these Fe-MOFs were employed for norfloxacin elimination.

Bioadsorbents prepared from agro-industrial waste were used to remove cadmium(II) with efficiency of 95.7, 92.4 and 60.2%, for BSG (guava seed bioadsorbent), BSC (yellow mombin seed bioadsorbent) and BSM (mango seed bioadsorbent), respectively.

Ten different toothpastes were selected. Toothpaste slurries were prepared at a ratio of 1:2, 1:3, 1:10 and 1:30 (w/w). The immobility/mortality test was carried out on Artemia salina L. The root growth test was carried out on Allium cepa L. pH of the slurries were determined.

Green chemistry principles are introduced to undergraduate students as an experimental class applying mechanochemistry to prepare both 2-bromoacetophenone and 2-phenylimidazo[1,2-α]pyridine through manual grinding and vortex mixing.

Biomass is a promising raw material for energy generation and is relevant to be used in chemistry education by enabling the discussion about sustainable development goals (SDGs). For higher education, it is recommended that planning and execution be based on problematized experimental activity (PEA).

(S)-Pyroglutamic acid solvent-free synthesis in undergraduate experimental classes to reinforce sustainable preparation and understanding of properties of chiral compounds in the solid state.

Qualitative research employing Bardin's content analysis methodology: this study delves into the approach of Sustainability and Sustainable Development Goals (SDGs) in textbooks of Natural Science area, specifically within Chemistry context.

Sustainability, sustainable development, sustainable chemistry and green chemistry are very close and closely interconnected topics, but they present very different concepts.

Theoretical calculations are tools in predicting sustainable photosensitizing molecules, synthesized derivatives of chlorins and bacteriochlorins. The theoretical data obtained with the Gaussian 09 software using density functional theory (DFT) are similar to experimental spectroscopic data.

Graphical abstract of composite electrode as electrochemical material for the simultaneous determination of pesticides in surface water and its oxidation behavior study.

The contamination of ocean water with oil spills can be a potential problem for food security. The study investigated the presence of polycyclic aromatic hydrocarbons (PAH) and benzene, toluene, ethylbenzene, and xylene (BTEX) in fishes from the Brazilian coast and Rio de Janeiro (RJ) had the higher contamination among the samples.

Physico-chemical treatment of hospital laundry wastewater using aluminum sulfate, tannin and Moringa oleifera seeds aiming for the removal of pollutants and pathogens.

Representation of the stages of the study of the enzymatic degradation of polyurethane (PU): (a) docking, (b) molecular dynamics and in (c) the free energy profile of the proposed reaction mechanism.

The dewatered sludge from the anaerobic reactor is directed to the reservoir, and subsequently, loading of the wetlands is carried out at different application rates.

This article presents the photocatalyst activity of abrasive mud waste on decolorization methylene blue dye in aqueous reaction medium with H₂O₂ and UV light from a source lamp put at 20 cm apart.

The degradation of malachite green by H₂O₂ was enhanced by 179-fold when catalyzed by Fe₃O₄@SiO₂, and at the same time, the catalytic degradation of malachite green could be stabilized in a wider pH range.

The graphic abstract represents the cycle from the entry of emerging contaminants into aquatic environments, sampling and separation of compounds by liquid chromatography coupled to mass spectrometry.

Thermoplastic starch-based biocomposites, derived from cassava, reinforced with eucalyptus fiber were prepared by hot compression molding. Sample reinforced with larger fibers showed improvement in mechanical properties and reduced moisture/water sorption.

This study investigated the feasibility of estimating the water quality parameters of the Uberaba River by remote sensing, a more sustainable technique, since it does not generate waste like conventional chemical analyses.

This review aims to provide an overview of the methods for determining pesticide residues in exotic fruits, focusing on the strategies employed by these methods and the occurrence of pesticide residues.

Biochar is derived from the thermochemical conversion of lignocellulosic biomass residues. The material is activated through a combination of chemical and physical processes to achieve desirable textural properties, making it an effective adsorbent for environmental remediation of both organic and inorganic contaminants.

This work will focus on Sustainable Development Goals 3 and 4, respectively, which will be achieved if citizens have a sustainable education. This plays an important role in having a healthy life.

Teaching chemistry as a tool for sustainability based on discussions of environmental chemistry in the classroom: challenges and achievements in 27 years of disseminating research in chemical education through the journal Quimica Nova na Escola (QNESc).