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.