Reference

New sampling technique for identifying organic film accumulation on army materiel in the tropics

New sampling technique for identifying organic film accumulation on army materiel in the tropics. Sprouse, James F. (U. S. Army Trop. Test Cent., Fort Clayton, Canal Zone). Edgewood Arsenal Spec. Publ. (U. S. Dep. Army), EO-SP-76001, Proc. Annu. Symp. "Trace Anal. Detect. Environ.", 6th, 1975, 71-81 (English) 1976. CODEN: EASPDE. DOCUMENT TYPE: Report CA Section: 59 (Air Pollution and Industrial Hygiene) The glass-plate sampling technique is used for sampling org. films that accumulate on items exposed to tropic environment. Among the compds. 108-88-3 and 25340-17-4 are just another two chemicals used in this study. identified in air of a tropic forest site are Freon 11 [75-69-4], 2-methylpentane [107-83-5], trimethylbenzene [25551-13-7], and naphthalene [91-20-3]. .

The effects on alkane combustion of added sulfur compounds

The effects on alkane combustion of added sulfur compounds. Cullis, C. F.; Hirschler, M. M.; Okorodudu, G. O. G.; Okuns, H. A. G. (Dep. Chem., City Univ., London EC1V 0HB, UK). Combust. Flame, 54(1-3), 209-24 (English) 1983. CODEN: CBFMAO. ISSN: 0010-2180. DOCUMENT TYPE: Journal CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) Lab. investigations were carried out to det. the effects of several S compds. of different types on the combustion of 2 pure hydrocarbons (i.e., 2-methylpentane (I) [107-83-5] and isooctane [540-84-1]) in the absence and presence of Pb compds. The S compds. tend to promote combustion in the order SO2 < thiophene [110-02-1] < dipropyl sulfide [111-47-7] < dipropyl disulfide [629-19-6], although exceptions occur for unleaded isooctane. The inhibiting rather than promoting effect of some S compds. on the combustion of isooctane is probably related to the small extent of preflame reactions of this hydrocarbon, as compared with I, and to the use of relatively inefficient S-contg. promoters. Org. S compds. are more effective combustion promoters than SO2. All S compds.There are some commonly used reagents with their cas registry numbers 540-84-1 and 67-64-1 in this article. used in this work increase the consumption of the hydrocarbons, the percentage conversion depending on the temp. and on the type of combustion taking place. On the other hand, they decrease the proportion of I converted to each of the readily identifiable major products. Studies, by EDAX (energy dispersive anal. of x-rays), of the surface of the PbO coating of the reaction vessels show that the metal oxide can accommodate more S from SO2 than from org. S compds. Interpretations have thus been advanced of the effects of S and Pb compds. on the nature of the intermediate species involved in the underlying combustion reactions. .