Document jdG6KROe8NeO04Qvbdk3omzN

KW8B-0009789 References to Recent Literature - 15 71 SIMPLIFIED COLORIMETRIC DETERMINATION OF SULFUR DIOXIDE IN THE AIR. S.M. Chumanov and M.B, Aksel'rod. J, Applied Cheis. 1J,, 720 (1938). (Russian). A small amount of dilute potassium ferricyanide solution added to a solution of tri-valent iron can be used as an indicator for the determination of sulfur di oxide in .the absence of other reducing agents. The blue coloration is intensive crrl enough to detect 0.02 mg. of sulfur dioxide in a liter of air. 72 DETERMINATION OF SMALL QUANTITIES OF METHYL BROMIDE IN .UR. R.L. Busbey and N.L. U--y Drake. Ir.d. & Eng. Chem, Anal. Ed. iQ, 390-2 (July 15, 1938). A method is proposed for the determination of methyl bromide in the lir of fumi gated spaces. The procedure involves saponification of the Dethyl bromide by alcoholic potassium hydroxide, removal of the alcohol, oxidation of the bromide Ss! to bromato by sodium hypochlorite, and iodioetric titration of the bromate. Re sults are reported of analyses of 13 samples ranging from 0,0480 to 0.0065 g. The average orror is plus or minus 1.756; the greatest, plus or minus 3,5$. 73 CARCINOGENIC ACTIVITY, STRUCTURE, AND CHEMICAL REACTIVITY OF POLYNUCLEAR AROMaTIC HYDROC.JvBONS. L.F. Fleser. Am. J. Cancor 34, 37-124 (September 1958), The author presents a long review of the subject which includes! (1) a critical evaluation and comparison of the methods for determining carcinogenic activity} (') information concerning the preparation and purification and the commercial sourcos of the carcinogenic hydrocarbons; (3) a nummary of the work on corrolatioi of chemical structure and carcinogenic activity, and (4) a summary of investiga tions on the metabolic fato of various active hydrocarbons. A very extensive bibliography 13 included, 74 THE PRODUCTION OF EXPERIMENTAL C..NCER OF THE LUNG IN MICE. M.G. Seelig and E.L. Benignus. Am. J. Cancer 3i5, 549-655 (August 1938). Although there ie no thoroughly satisfactory method of applying tor to the lungs in experimental work, tho method here described by the authors is simple. The bottoms of tho cages were covered with fluffy coal soot or tar-froe lamp hlack to which known carcinogenic hydrocarbons wore added. Tho movements of the animals ralSG sufficient uust to cause black particloe In the smaller intrapulmonary bronchii within 6 days und in 5 weeks' time these arc widespread throughout the lungs. 75 SENSITIZATION TO JUTE. F.A, Stevens and L. Jordani. J. Allergy 610-2 (Septem ber 1928). Jute, c vegetable fiber grown in India, is widely used in the form of burlap for packing and transporting articles of merchandise. Because It is choap, it is used also in place of more expensive and durable fibers in inexpensive upholster ed furniture and in cheaper domestic rugs and carpets. Inasmuch as its use Is sc common, contact with Jute is almost univors.al not only industrial but domoatic ac well. Fivo caso histories aro given demonstrating conclusively the allergenic .properties of Jute. 76 DANUERb OF PnRAFFIN. J. Am, Med, Assoc. (Queries and minor notes) 110. 2102 (1938). Paraffin, when melted and sprayed under pressure, comes out as a powder. The worker wears a mask but it is not satisfactory. Is there a health hazard? Answer! Pur- paraffin should be harmless, but paraffin oils and petroleum deri vatives might cause- acne, and possibly tar cancer. The best solution is a good exhaust sy3tor... Ordinary respirators are not suitable and a supplied-air mask is necessary.