Polyaniline (PANI)-Fe2O3/CuO and PANI -Fe2O3/ZnO hybrid materials were developed prepared by in situ polymerization at 0°C using ammonium persulfate as oxidant. The resulting products are investigated for their structural properties X-ray diffraction (XRD), Fourier transform infrared (FTIR), scanning electron microscopy (SEM), the results confirm formation of architecture. In addition, electroc...

1,4-dioxane is an emerging contaminant that was used as a corrosion inhibitor with chlorinated solvents. Metal-activated persulfate can degrade dioxane but reaction kinetics have typically been characterized by a rapid decrease during the first 30 min followed by either a slower decrease or no further change (i.e., plateau). Our objective was to identify the factors responsible for this plateau...

BACKGROUND Persulfate salts have been identified as a cause of occupational asthma (OA). The aim of the present study was to describe the clinical characteristics, diagnostic testing results, and follow-up of eight patients with OA that was triggered by these chemical compounds. METHODS Eight patients with OA due to exposure to persulfate salts were studied. Immunologic, lung function, and sp...

Many different causative agents have been ascribed to occupational asthma (OA). Persulfate salts are low molecular weight chemical compounds widely used in different manufacturing processes, particularly in the cosmetics industry. Persulfate-induced asthma may represent 4% of all OA cases, and although the first cases due to persulfate salts were described approximately 30 years ago, the preval...

The kinetics of the thermal and microwaveassisted oxidative degradation of poly(ethylene oxide) were determined with potassium persulfate as the oxidizing agent. Gel permeation chromatography was used to determine the variation of the molecular weight with time. The degradation was studied as a function of the temperature and persulfate concentration, and it was found that the degradation rate ...

In this study, 2-[(Acryloyloxy)ethyl]trimethylammonium chloride was graft polymerized onto chitosan (CS) to form quaternary ammonium CS (QAC) by using ammonium persulfate as a redox initiator. Alginate (ALG) microspheres loaded with a water-soluble macromolecular model drug, blue dextran (BD), were obtained by corporation of coaxial gas-flow method and ionic gelation process. CS and QAC were th...

A method using accelerator mass spectrometry (AMS) has been developed for quantifying attomoles of beryllium (Be) in biological samples. This method provides the sensitivity to trace Be in biological samples at very low doses with the purpose of identifying the molecular targets involved in chronic beryllium disease. Proof of the method was tested by administering 0.001, 0.05, 0.5, and 5.0 micr...