Silver‐assisted detection: A novel circular dichroism (CD) method was described for detecting L‐cysteine in biological fluids on the basis of chiral nanoparticle self‐assembly from AgI and L‐cysteine (see graphic). The method allows highly selective and sensitive detection of L‐cysteine in biological fluids at the μM level without the need for any special synthesis or sample pretreatment other than an appropriate dilution.

We proposes coupling ATR/FTIR mapping with principal component analysis for the biomimetic degradation of poly(l-lactide)/hydroxyapatite composite material.

With the acceleration of industrialization, environmental arsenic pollution is threatening human health. However, by the time clinical symptoms appear, arsenic toxicity has usually caused irreversible damage to the body, so it is important to establish a rapid and accurate screening method for early arsenic exposure. In this work, 32 female C57BL/6 mice were exposed to different concentrations of inorganic arsenic in drinking water for a week. By analyzing the changes in serum, more than 20 compounds were detected to increase or decrease with the increase of arsenic intake. The abnormal increase in inosine, xanthine, xanthosine, and hypoxanthine and the abnormal purine pathway were found at the same time. Dimethylarsenic acid, an important inorganic arsenic metabolite in the body, was also found in serum. Combined with statistical analysis, early arsenic exposure can be easily and quickly detected, and the potential health risks of short-term exposure can be revealed simultaneously.

No abstract

A series of CuxO–TiO2 hollow nanospherical composites with different mass percents of copper element were prepared, and the composites displayed high photocatalytic activities towards acetaldehyde degradation to CO2 under visible-light irradiations.