𝔖 Bobbio Scriptorium

✦ LIBER ✦

Macromolecular and molecular structure of coal and the possible role of pyrolysis-field desorption mass spectrometry in its elucidation

✍ Scribed by Anna Marzec

Publisher: Elsevier Science
Year: 1985
Tongue: English
Weight: 905 KB
Volume: 8
Category: Article
ISSN: 0165-2370
DOI: 10.1016/0165-2370(85)80029-2

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Pyrolysis-gas chromatography/mass spectr

Pyrolysis-gas chromatography/mass spectrometry of a coal extract and its fractions separated by planar chromatography: correlation of structural features with molecular mass

✍ C. A. Islas; I. Suelves; J. F. Carter; A. A. Herod; R. Kandiyoti 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 195 KB 👁 2 views

Assay for plasma free phenylalanine and

Assay for plasma free phenylalanine and tyrosine by high-pressure liquid chromatography and field desorption mass spectrometry and its application to an in vivo study of the phenylalanine hydroxylating system in man

✍ W. D. Lehmann; N. Theobald; H. C. Heinrich 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 856 KB

Oxygen interaction of CdS-based gas sens

Oxygen interaction of CdS-based gas sensors with different stoichiometric compositions was studied by X-ray photoelectron spectroscopy (XPS) and thermal-desorption mass spectroscopy observations combined with conductivity measurements. Three different types of film with different atomic ratios of Cd/S were used in the study of oxygen chemisorption in a low-temperature range between 300 and 570 K. Spray pyrolysis was used for the deposition of the films on glass substrates; XPS and energy dispersive spectroscopy of X-ray together with atomic force microscopy and scanning electron microscopy were used for the characterization of the composition and structure of the films. It was possible to distinguish different temperature ranges for the thermal desorption of the different adsorbed oxygen species. A comparison of the data from XPS and mass-spectroscopy observations with conductance measurements allows to conclude that metallic surface atoms are responsible for different interactions of oxygen species with CdS surfaces.

📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 379 KB