First report of accumulation of perfluorooctane sulfonate (PFOS) in platypuses (Ornithorhynchus anatinus) in New South Wales, Australia.

The platypus (Ornithorhynchus anatinus) is a semi-aquatic monotreme that occupies a high trophic position in the freshwater ecosystems of eastern mainland Australia and Tasmania. Platypuses are continuously exposed to anthropogenic contaminants including perfluorooctane sulfonate (PFOS). This study examined PFOS concentrations in the livers of deceased platypuses (eight wild; one captive) that were opportunistically collected across NSW over a two- and a half-year period.

Geochemical signature of urbanisation in Blue Mountains Upland Swamps.

Urbanisation leaves a geochemical signature on the environment, as weathering of urban materials such as concrete contributes to elevated levels of major ions including calcium, bicarbonate and potassium. However, there is limited research that addresses the ecological consequences of this signature on the biotic community. Blue Mountains Upland Swamps (BMUS), an endangered ecological community with high conservation values, are vulnerable to urban degradation.

A colorimetric chemosensor for quantification of exchangeable Cu in soil.

Chemosensors have already demonstrated potential for the detection and imaging of metal ions in solutions and biological systems, however, their applications to soil analysis are limited. This study explores the potential of utilizing a chemosensor for the detection of exchangeable Cu in soils via qualitative (solution visual color change) and quantitative (UV-Vis spectrophotometry) approaches. Montmorillonite and kaolin clays were doped with Cu(NO) solutions from 2.

Ultrasensitive Colorimetric and Ratiometric Detection of Cu: Acid-Base Properties, Complexation, and Binding Studies.

Herein, we report the synthesis and characterization of a chemosensor, 5-(diethylamino)-2-(2,3-dihydro-1-perimidin-2-yl)phenol (H), synthesized from a condensation between 4-(diethylamino)salicylaldehyde and 1,8-diaminonaphthalene. Upon investigation of the sensing properties of H, it was found that this sensor may be employed for simple yet efficient detection of Cu in aqueous methanol solutions. The selective and ratiometric response to Cu yielded an outstandingly low limit of detection of 3.

Self-assembly of an imidazolate-bridged Fe(III)/Cu(II) heterometallic cage.

A rare, discrete, mixed-valent, heterometallic Fe(III)/Cu(II) cage, [Cu6Fe8L8](ClO4)12·χsolvent (H3L = tris{[2-{(imidazole-4-yl)methylidene}amino]ethyl}amine), was designed and synthesized via metal-ion-directed self-assembly with neutral tripodal metalloligands. The formation of this coordination cage was demonstrated by X-ray crystallography, ESI mass spectrometry, FT-IR, and UV-vis-NIR spectroscopy.