β Scribed by Rainer Fiedler; Rainer Herzschuh
No coin nor oath required. For personal study only.
X-ray photoelectron spectroscopy (XPS) was used to study the conversion of inorganic chlorine (chloride salts) to C-Cl bonds and subsequently chloro-organics on the surface of lignite by heat treatment at 300Β°C in humid air. It is shown that a naturally chloride-rich lignite can form chloro-organics by heat treatment without added catalysts. The XPS method was used to verify C-Cl bonds on the lignite surface as a necessary condition of chloro-organic formation according to the so-called de n000 synthesis. The chloro-organics were formed in a layer on the lignite surface with a chlorine content significantly higher than on the original surface. This implies that under the influence of air, chloride ions moved to the lignite surface, with subsequent oxidation and formation of C-Cl bonds on the surface, allowing subsequent release of toxic PCDDs and PCDFs.
π SIMILAR VOLUMES
Alloys of NiTi have gained popularity in biomedical applications ; however, Ni is known to cause toxic and allergic reactions in the body, and concerns have been expressed regarding the materialΓs biocompatibility. In this study, coupons of equiatomic NiTi were prepared by four methods, namely, mech
The objective of this study was to investigate the effects of heating on the chemistry, physical properties and antifactor Xa activity of enoxaparin. Samples of enoxaparin heated at 70 degrees C lost 27% of their initial AFXa activity after 8 h, then activity increased to 94% of the initial activity