Document 5BQ8EgRX0Ym0pKbk8jE7eVNR

FILE NAME: Chemical Abstracts (CHAB) DATE: 1965 DOC#: CHAB051 OCUMENT DESCRIPTION: Abstract Originally Published in 1965 by Mastromatteo ...... mui an uu-uguc syringe. skaya, V. T. Petrova, and A. A. Vernikova (I; _ ,/ioccclurc was followed mixts, contg. components us and Occupational Diseases, Moscow). Gigiena mverse ns MesCO (b.p. 50) and o-pinene (b.p. 154) were Zahahvaniya 9(9), 33--10( 1965)(Russ). Under analyzed with a standard deviation <5% . If sampling over a 2001) workers exposed to SiOs, 98 patients with du period of time is desired, bubbling through an absorption vessel and 200 healthy persons. A new examn. techni: with a fritted glass tube may be employed (Levadie and Harwood, a breathing dynamics is suggested, which makes possi C l 54, 14517d). V'hcn EtOII was used as the absorbent at of early forms of silicosis. ; room temp, only 50% of trichlorocthane could be recovered. ChangeB in the hemopoietic function of workers en Reducing the temp, with dry ice resulted in complete recovery. preparation of pyramidon. L. B. Yushkevich (F. In the 3rd method, the sample is passed through a glass tube Inst. Hyg., Moscow). Gigiena Truda i Prof. Zabolr. packed with a suitable adsorbent, eg. dinonyl phthalatc on Celite, _ 50-2(1965)(Russ). Examns. were carried out in 4 which is then placed in scries with the gas chromatography 90% of whom were women. Subjectively they oir column (Cropper and Kaminsky, loc. cit.). By a judicious with headache, weakness, and vertigo. Leukopenia choice of column packings it is possible to retain some components was observed in 58.8%, <4000 in 8.5%, and abs. neut in the adsorption column while others are being eluted. Leslie S. Forster <2450/mm.* in 45.4%. The frequency of neutroj relative to the time of exposition. Toxigenic gram Evaluation of the risks [of the use of widia], J. Dantin i neutrophiles was found in 8 cases. In most of the peop: Gallego and M. Lopez de Azcona (Inst. Nacl. Med. Seguridad there was a slight anemia. In bone marrow from one wc Trabajo, Madrid). Intern. Congr. Occupational Health, 14th, examd., an increase of myelocytes (76.7%) and of pla: Madrid 1963(2), 504-6(Pub. 1964)(Span). Possible hazards (7.5%) was found. No antileukocyte antibodies were of the use of widia (I), a com. cemented tungsten carbide, are blood. Ivo . interpreted in relation to the inhalation of I dust. Atm. dust Graphite pneumoconiosis in carbon-electrode make collected following the use of I in machining metals contained W " Okutani, S. Shirna, and T. Sano. Intern. Congr. Occu} 0.2, and Co 0.03%. However, floor dust and metal shavings Health, 14th, Madrid 1963(2), 626-9(Pub. 1964)(Eng). Pi were completely devoid of W or Co. Accordingly, dust hazards coniosis from the inhalation of graphite (I) dust has nt from the use of I are slight. s W. C. Tobie viously been reported from Japan. New data are given , Efficiency of molecular iodine removal from air. Howard J. Dworkin and Charles M. Simeck (Univ. Hosp., Ann Arbor, Mich.). J. Clin. Endocrinol. Melab, 25(11), 1505-10(1965) (Eng). The ingestion of airborne I through the lungs may ac count for apparent persistent neg. I balance studies. A study incidence of I pneumoconiosis in 256 Japanese workers ex to I dust. This form of pneumoconiosis developed earlier other forms of the disease but the pgthol. effects tended relatively mild, with little disturbance of respiratory fun even in advanced cases (which showed marked opacity oi was made of the efficiency of the removal of I from the air by 2 lungs in radiological examns.). Dust samples from bench types of trapping systems. The room air was drawn through a in a factory (where atm. I dust exceeded allowable limits) v 25-ml. flask or generator contg. NamI and variable amts, o f- - subjected to x-ray diffraction. The amt. of free C was >99. Na'*`I. The 1!1I and the 1SII were released by adding 2 drops and the amt. of free silica <0.1% . The pathol. and chc of a KiCr20 7 + H2SO4 soln. The 1st type of trapping system findings disproved reports that C dusts alone cause only pigmen employed a liquid scrubbing system using 0.1N N a^ O j as the tion but no fibrosis. Although it appeared that I dust caus trapping soln. In the 2nd type the I was trapped by passage only slight tissue reaction, excessive inhalation could produ through a dry system of glass boiling beads coated with Na^Oa. , malignant pneumoconiosis of the alveolar type. The develo, At the completion of the expt. the glass tubing_ in the Type 1 < ment of pneumoconiosis depended not only on the phys. an collecting system and the glass boiling beads in the Type 2 chem. properties of I dust but on the amt. inhaled. collecting system were flushed with 0.12V Naj&Oj. The Type W. C. Tobie 2 system had a trapping efficiency of >90% , as well as better Removal of exhaust odors from solvent extraction operation b} precision than the Type 1 system. Both systems were used to activated charcoal adsorption. H. L. Bamebey. J . A ir Pollu measure the I in the air of the Clinical Research Unit in the_ tion Control Assoc. 15(9), 422(1965)(Eng). Iso-PrOH at the University Hosp. where I balance studies were in progress. rate of 35 gal./hr. in 2000 ft./m in. of air at 120F. is exhausted Several 20-hr. expts. failed to reveal detectable amts, of I from a lemon pulp extn. operation. Particulates and acid fumes in the air. Substitution of AgNOj or NaOH solns. for the are scrubbed out with IN NajCOa soln. The vapors are passed NaiSjO; did not increase the extn. efficiency and in some in through a demister and are reheated to <100% relative humidity. stances was less efficient. N. R. Stephenson The scrubber is followed by an automated charcoal system of 2 / Danger of carcinogenic pitch components in the environment. alternating units on a preset time cycle. Solvent recovery is 95% Tadeusz Gorski and Urszula Malchar (Inst. Onkologii, Gliwice, (5% handling loss). Operating costs are 14% of the recovered Poland). Gaz, Woda Tech. Sanit. 39(8), 268-70(1965)(Pol). values. Odors are undetectable and the fire hazard is nil. Samples of deposits were collected from the surface of cooling George E. Taylor pipes in a pitch cooler and from the snow surface 300 m. from Recent occupational health experiences in Ontario. Ernest the cooler hall. The tarry substances contained in the deposits Mastromatteo (Ontario Dept. Health, Toronto, Can.). J. were extd. with CeHe and the exts. were dild. with CeH5 to ob-' Occupational Med. 7(10), 502-ll(1965)(Eng). Case reports of tain 20% solns. These were then applied once a week onto the exposures to Hg in the hat industry, in chlor-alkali plants, and skin of mice. Deposits from cooling pipes contg. 70% of tarry in the servicing of an outdoor advertising display with a mer substances caused the appearance of skin cancer within several cury switch; to EtHgOAc in seed treating; to azodiisobutyro- weeks of treatment. All mice of this group died within 14 nitrile in vinyl foam manuf.; to morpholine and related compds. months. Mice treated with an ext. soln. of substances col in urethan foam manuf.; to tolylene diisocyanate during its lected on snow in the vicinity of the pitch cooling establishment manuf. or during thermal decompn. of urethan foam; to 4,4'- survived longer, but in ~ l / 5 of the group cancerous growths methylenebis(2-chloroani!ine) during curing of isocyanate- were also observed. Irena Kloczko contg. polymers; to 1,3,5-tricyanomethylhexahydro-r-triazine Industrial hygiene and health of workers in the hexachloran and (or) resorcinol in tire manuf.; to furfuryl ale.; and to as industry, V. N. Trefilov and P. I. Kalyaganov. Gigiena bestos are reported. Environmental data are given. Truda i Prof. Zabolevaniya 9(9), 7-12(1965)(Russ). Detns. . Andrew L. Reeves of hexachloran (I), Cl, and CeH s were conducted on the air of Disruption of the function of the liver during the action on the various parts of a plant engaged in the production of tech. organism of new vulcanization accelerators. Experimental I consisting mainly of a mixt. of isomers of hexachlorocyclo- study. R. S. Vorob'eva and N. V. Mezentseva. Tr. 1-go hexane, among them 10-13% of the 7-isomer, which is chiefly [Pervogo] Mosk. Med. Inst. 28, 217-21(1964)(Russ). The responsible for the toxicity of I. While the permissible concns. following accelerators were introduced into 22 rabbits: BTMA of I, Cl, and CeHe in the air were 0.1, 1.0, and 20 mg./m.*, (2-diethylaminomethylenethiobenzothiazole)(I), Santocure, (N- the resp. av. concns. of these compds. in the synthesis cyclohexyl-2-benzothiazolesulfenamide), AT-oxydiethylene-2-ben- section were 0.3, 1.5, and 20 mg./m.*, in the melt-erystn. plant zothiazolesulfenamide (II)), thiuram (HI), and captax (IV) 0.8, 0.6, and 10.1 mg./m.*, in the CeHt_distn. plant to 0.17, 0.6, in a dose of 20 m g./kg. During the action of I and II an in and 21 mg./m.*, and in the transportation part of the plant 0.3, crease was noted in bilirubin index. In animals subjected to the 1.0, and 15 mg./m.* In the distribution and storage areas for I, action of HI there was a high aldolase activity. Increase of the its concns. in the air were 0.8 and 0.3 m g./m ,1, resp. These con 'aldolase content was less significant in rabbits subjected to I ditions are blamed on obsolete equipment and inadequate ventila and II. Increase of the aldolase content was accompanied by tion, which permitted the concn. of I vapor during various stages hyperbilirubinemia. After action of HI, death of the animals of the crystn. process to reach 4.0--4.5 mg.yni.* Clin, exainn. occurred. HI, II, and I during introduction into the organism of 100 workers revealed in most of them slight disturbances in showed damaging action on the liver (toxic hepatitis). Toxi I the function of the autonomic nervous system, the heart, and the cological study of other vulcanization accelerators (IV, Santa liver, moderate methemoglobinemia, a lowering of the alkali cure) indicated no hepatotropicity. From p ` r reserve of the blood, and increased excretion of phenols in the 1965, Abstr. No. 91464. ur;nc_ A. A. Horvath Applications of v " * Evaluation of the external respiration function in persons ex F. posed to the effects of silica-containing dust. L. G. Ok)"" --