Tuning oxidative modification by a strong electric field using nanoESI of highly conductive solutions near the minimum flow rate.

Oxidative modification is usually used in mass spectrometry (MS) for labeling and structural analysis. Here we report a highly tunable oxidation that can be performed in line with the nanoESI-MS analysis at the same ESI emitter without the use of oxidative reagents such as ozone and HO, and UV activation. The method is based on the high-pressure nanoESI of a highly conductive (conductivity >3.

Synthesis and fluorescence properties of butadiyne-linked linear and cyclic carbazole oligomers.

Butadiyne-linked linear and cyclic carbazole oligomers were successfully synthesized. The intensity of the emission band in the 0-0 band of the highly planar macrocyclics decreased compared to that of the 0-1 band. Contrary to this, for larger macrocycles having reduced planarity, the intensity of the emission of the 0-0 band increased as in the cases of the linear compounds.

Selective loading of platinum or silver cocatalyst onto a hydrogen-evolution photocatalyst in a silver-mediated all solid-state Z-scheme system for enhanced overall water splitting.

We selectively loaded a hydrogen (H)-evolution cocatalyst, either platinum (Pt) or silver (Ag), onto a H-evolution photocatalyst, zinc rhodium oxide (ZnRhO), in a Ag-inserted ZnRhO and bismuth vanadium oxide (BiVO) hetero-junction photocatalyst (ZnRhO/Ag/BiVO) by a photo-deposition method. The selective loading of Pt or Ag was achieved by taking advantage of the band-gap difference between ZnRhO (1.2 eV) and BiVO (1.

Coupled anaerobic ammonium oxidation and hydrogenotrophic denitrification for simultaneous NH-N and NO-N removal.

Nitrate removal during anaerobic ammonium oxidation (anammox) treatment is a concern for optimization of the anammox process. This study demonstrated the applicability and long-term stability of the coupled anammox and hydrogenotrophic denitrification (CAHD) process as an alternative method for nitrate removal. Laboratory-scale fixed bed anammox reactors (FBR) supplied with H to support denitrification were operated under two types of synthetic water.

A simple and portable colorimeter using a red-green-blue light-emitting diode and its application to the on-site determination of nitrite and iron in river-water.

A portable colorimeter using a red-green-blue light-emitting diode as a light source has been developed. An embedded controller sequentially turns emitters on and off, and acquires the signals detected by two photo diodes synchronized with their blinking. The controller calculates the absorbance and displays it on a liquid-crystal display.