Visualizing stimulus-responsive dual-ligand fluorescent probes for hypochlorite: A novel strategy for real application in tap water.

As an effective ingredient of disinfectants, ClO inevitably remains in water, which induces potential health hazards such as lung damage and kidney disease. In this study, we synthesized stimulus-responsive dual-ligand luminol-Tb-GMP coordination polymer nanoparticles (luminol-Tb-GMP CPNPs) as highly selective fluorescent probes for the real-time and visual detection of ClO . CPNPs consist of Tb , a nuclear metal, that coordinates with GMP and luminol, an auxiliary ligand.

Extraction of extracellular polymeric substances (EPS) from indigenous bacteria of rare earth tailings and application to removal of thorium ions (Th).

Thorium, as an important radioactive element, is widely present in nature, and its accompanying environmental pollution is also serious. Extracellular polymeric substances (EPS) are commonly found on the surface of microbial bodies and have strong adsorption capacity for metal ions. In this study, four methods were used to extract EPS from indigenous bacteria of rare earth tailings and to determine the best extraction method.

Functionalized biochar-supported magnetic MnFeO nanocomposite for the removal of Pb(ii) and Cd(ii).

In this study, a novel magnetic biochar-MnFeO nanocomposite (BC/FM) was prepared using low-cost corn straw and MnFeO by sol-gel/pyrolyzing route using egg white, which has abundant functional groups (-NH and -COOH). Following that, its composition, morphology and structure was characterized by various techniques including SEM-EDX, BET, XRD, and VSM. Batch experiment of the adsorption for Pb(ii) and Cd(ii) including influence of pH, kinetics, isotherm and thermodynamics was also studied.

Adsorption of Pb from aqueous solutions using Fe-Mn binary oxides-loaded biochar: kinetics, isotherm and thermodynamic studies.

This study evaluated the removal of Pb in aqueous solution using Fe-Mn binary oxides-loaded biochar (BFMs). The characteristics of BFM were obtained using a scanning electron microscopy, an energy dispersive spectrometer (EDS), Brunauer-Emmett-Teller, a X-ray diffraction (XRD), and a X-ray photoelectron spectroscopy (XPS). The effects of pH, adsorbent dose, contact time, initial Pb concentration, and temperature in the batch sorption experiments were investigated.

[Soil Heavy Metal Spatial Distribution and Source Analysis Around an Aluminum Plant in Baotou].

The soil with 500 m distance from an aluminum plant in Baotou was studied. A total of 64 soil samples were taken from the 0-5 cm, 5-20 cm, 20-40 cm and 40-60 cm layers, and the contents of Cu, Pb, Zn, Cr, Cd, Ni and Mn were tested, respectively. The correlation analysis and principal component analysis were used to identify the sources of these heavy metals in soils.