Contact Electrification and Adhesion Between Dissimilar Materials

✍ Scribed by Horn, R. G.; Smith, D. T.

• Book ID: 121151687
• Publisher: American Association for the Advancement of Science
• Year: 1992
• Tongue: English
• Weight: 527 KB
• Volume: 256
• Category: Article
• ISSN: 0036-8075
• DOI: 10.1126/science.256.5055.362

✦ Synopsis

Albrecht, Nature 343, 254 (1990)

9. The sample set consists of three subsamples of the bituminous marl (marls 1 to 3), a sample from the stromatolitic limestone, and a sample from the massive gypsum from the same evaporitic cycle (Fig. 4). The geology of this basin is extensively described by G. B. Vai and F. R. Ricci Lucci [Sedimentology 24, 21 1 (1 977)l. 10. The freeze-dried samples were powdered and Soxhlet extracted with methanol:CH,CI, (1 :7.5 by volume for 40 hours) under nitrogen. Saturated hydrocarbon, alkylthiophene, alkylsulphide, and polar fractions were isolated from the extracts as in (1 1) and analyzed using GC and GC-MS after addition of internal standards orior to fractionation (6).