Fine-tuning benzazole-based probe for the ultrasensitive detection of Hg in water samples and seaweed samples.

Developing potentially toxic metal ion probes is significant for environment and food safety. Although Hg probes have been extensively studied, small molecule fluorophores that can integrate two applications of visual detection and separation into one unit remain challenging to access. Herein, by incorporating triphenylamine (TPA) into tridentate skeleton with an acetylene bridge, 2,6-bisbenzimidazolpyridine-TPA (4a), 2,6-bisbenzothiazolylpyridine-TPA (4b) and 2,6-bisbenzothiazolylpyridine-TPA (4c) were first constructed, expectably showing distinct solvatochromism and dual-state emission properties.

Traditional and novel organophosphate esters (OPEs) in PM of a megacity, southern China: Spatioseasonal variations, sources, and influencing factors.

Organophosphate esters (OPEs) are ubiquitous contaminants in the environment, whereas their atmospheric processes and fate are poorly understood. The present study revealed the spatial heterogeneity and seasonal variations of traditional and novel OPEs in PM (particulate matter with diameters < 2.5 μm) across a megacity (including residential areas and potential source sites) in South China.