Document GzoLk1RgVwLdEvKKyqZ2YYKyn

693 (October, 1973J 9596-9607 9596. DRUYAN, K. A. (F. F. Krlsman Mosc. lies, Inst. Hvg,, Moscow, VSSIt.) SpeUrofotometrirlicskne oprcdelenic trikrezllfosfata D i dibiitilftal.ua pri il.li sovniosnioni pri'utstvii v vozdukhe. [Eb-wtro2 nlinin-ni'ii-ir dctoi min.-nmn of ti n-nsvl'iliosphatc and dibutviphtiialatir jointly i)r<>. in m go? 1.Ill SA' T 37721: 100-102. 19f2.--A method was d/iVlnped fur determining levels of toxic, volatile plasti cizers cetnnienlv used in fioorin : materials, Polvmcric materials based on polvvinvl chloride f 1*\ ft ami e.ilbtxvlln resins often contain tricrosyli'h.mpii.iie (TCI1) and dibuivlphthalale (DBP) as plasticizers. To detejmin.' tbc n.nreniratii.n ot each substance when both were present, alcoholic solutions nf TCI' and DDP at concentrations of 10 and 30 pa ml were measured speetrophotomotricallv at 2 wave lengths: TCP absorbs intensely at 215 nni anti DBP, at 225 nm. A calibration curtc was constructed. An alternative method Involves measurements at 220 and 225 nm. Concentrations are calculated by the solution nf 2 simultaneous Firordt equations. Experiments were performed on linoleum samples 100 cm2, at 20 and 401', kept in conical flasks. After 24 hr, air samples were withdrawn at a rate of 0.5.1/miti into a sorbent charged with ethanol iwilh cooling). Optical density was determined at 215, 220 and 225 nm and TCP and DBP concentrations deter mined mathematically. The error of determination of TCP or DBP In the mixtures did not exceed 20',, which was satisfactory considering the low concentrations involved.--M. D. S. 9597. GRANGER, JEAN-MAURICE. (Inst. Urbanlsme, Univc A Montreal, C. P. G128, Montreal 10], Quo., Can.) Computer mapping an an aid in air pollution studies: Montreal region study. SARRACENIA 15. 43-83, Illus, 1972. [Kr. summ. |--This article discusses; the appropriate selection of a set of local factors chosen as useful indicators, given the typo of urban pollution; and the optimal spatial distribution of the required data over either the urban or rural zones of the region. Hie technique is applied to the Montreal, Quebec (Canada) region and allows an almost instant appraisal of (he intensity of atmospheric pollution. -- D. T. S. 9598. esPIJY, W. II., Jr. and G, H. WARD Jr. (TRACOR, Inc., W 6500 Tracoi Lane. Austin, Tex. 7H721, USA.) Estuarine water Quality models. WATER RES GUO): 117-1131. Ulus. 1972.--The results are reviewed of a study (Ward and Espey) undertaken by the Environ mental Protection Agency to evaluate the use ot models--mathematical, hydraulic, and electrical analog--for simulating pollution processes in estuaries and predicting results of proposed pollution control actions,--D. T, S. 9599. SALYAMON, G. S, and N. A, PETROVA. Oprcdolenie mikroq grammovykh kulichcstv polietilenamtnov v vode. [Determination ot Vtf micron-ram Quantities of polyethylene ixdvatnines in water,1 GIG 2 SANIT 37(5): 59-G3. 1972.--The sensitivity of colorimetric analysis of polyamines, based on interaction with cosin and copper sulfate, increases with a decrease in pll of the medium. By adding citrate bulfer solution. pH 2.5-2.7, it reaches 0.000 mg/1 for polycthyleneimines (PEI) and 0.02-0.2 mg/1 for polyethylene polyamines (PEPA). The Cu-eosin reagent permits analysis of high-molecular PEPA in the presence of low-molecular PEPA. Total high-molecular etbyleneamines and low-molecular amines can be determined colorimctrically using p-nltrodiazobenzenc, PEPA can be analyzed in the presence of l'EI using the known colorimetric reaction for secondary amines with 1,2napbthoquinone-4-sodium sullonate. The sensitivity Is high (0.02 mg/I). --M. D. S. 9600." FILIPPOV, A. P., V. K. KOMLEV and V. V. MAL'TSEV. A (All-Union nos* Inst. New Constr. Mater., Moscow, USSR.) Metodika D gazo-khromatografichcskofio issledovanlya letuchikh veshchestv, 2 Vydelyaemykh v vozdukh polimernymi stroitel'nymi materialami na osnovo polivim1khlorida.. [Gas-chromatographic analysis of volatile substances emitted into the air by construction polymers with a poly vinylchloride base,] GIG SANIT 37(C): G7-68. Illus. 1972.-"Analysis Was made alter a preliminary concentration. This method can be used for quantitative and qualitative comparisons of sanitary-hygienic con ditions.*--M. D. S. 9601. MADEYSKI, A. (Inst. Balneo- Climatol., Poznan, Pol.) O A nioktorych problomach zabczpieczoma optvmulncgo srodowiska w uzT drowiskach. [Some problems involved in optimal protection of the W environment in sius.1 BALNFOL POL 2'11-21G. 11171 [reed. l972]T--l7(iallti resorts should nwav from urban agglomerations. Tho natural capacity of the environment should not be overreached. Industrial plants If* erect'away fioei these places. Noise, water and air pollution should be avoided. --(Courtesy NSF PL 83-480). F, W. 9602. BRODNIEWICZ, A. and B. TOROS. (Acad. Phvs. Educ., T Warsaw, Pol.) Aspekty higtentezne uchruny uzdrowisk przed halasem. IHvglenic aiipovis of spa protection against mnsc.l BALNI OL POL IGf3/9): 223-239. Illus. lOYlJierd. 1972'p-Thc most important aspects of the problem (next to the legal aspect) ts the planning of highways, streets, town quarters, industrial centers and airports, while taking Into account the factor of quietness. Calm has a bene ficial effect in the treatment of many diseases. --(Courtesy NSF PL 83-480). 9603. KROTKOV, F, G. Nauchno-technichoskil progress, vnesltn- yaya sreda 1 chclovek. [Scientific-technical progress, Hie environment f W > and man.) GIG SANIT 37(C); 3-9. 1972.--In tills literary report, the scientific-technical progress of Soviet industry, medicine, etc., is described. Aspects of the human environment, e.g., air, H2O, soil, and noise pollutions, their effects on man and protective and preventive VV measures to be undertaken, arc discussed. General aspects of studies conducted in the USA and USSR are illustrated. Concern Is expressed over environmental changes produced by scientific-technical progress and a request is made to utilize scientific-technical knowledge to remove harmful materials from man's environment.--M, D. S, 9604. LANGE, H. J. and R. REITER, '.mat, Med, Datenverarb. Ges. Strahlen Umweltforseh., Tech. Univ. Muench., Arabellast. 4/1, c 8 Muenchen 81, West Ger.) Datenverdichlung bei der Auswertung \( multivariatcr epidomiologlscher Studien. |Data reduction in the evaluation of multivariate epidemiological studies.) METHODS INF MED 11(4): 253-257. 1972, |Kngl. summ.]--The problems of 6tatis- tical analysis In an epidemiological cross-sectional study of 13,000 workers with 300 qualitative and quantitative characteristics per case were discussed, with the objeclive of determining the significance of chronic inhalable noxae, present at the place ot work, for chronic bronchitis and pulmonary emphysema. Models for estimation of dust exposure in previous years (the causative factor), for reduction of the number of symptom-groups and elimination of modifying factors were presented. A comprehensive index was computed, in analogy to the Staubsummenwert (cumulative dust exposure indexl used 111 the coal mining industry of the Federal Republic of Germany. The decision- tree method was used to reduce the largo number of qualitative mid quantitative symptom-groups. Modifying factors were considered by eliminating individual cases, by constructing sub-groups and by reference to nominal values, 9605. ASTRAND, IRMA, P. FUGELLI, C. G. KARLSSON, K. RODAHL (Inst. Work Physiol., Gydas vel 8, Oslo 3, Norway.) and Z. VOKAC, Energy output and work stress in coastal fishing. SCAND J CLIN LAB INVEST 31(1): 105-113. Ulus, 1973,--Energy expendi ture In 14 fishermen engaged in fishing was determined by direct measurement of O2 uptake and by indirect assessment based on continuous recording of the heart rate. Urinary excretion of catecho lamines was assayed as an index of slress response. The average energy expenditure during all activities on board for the whole work day amounted to the equivalent of about 1 liter 02 uptake per min, corresponding to about 39',i of the fishermen's maximal aerobic power, with peaks up to S0C/. On the average, about a 10-fold increase in epinephrine and a 4-fold Increase in norepinephrine excretion were observed during work as compared to resting night values. 9606. HARSTELA, PERTTI, (Inst. For. Fcnn., Helsinki, Finl.) Puunkorjuuraenotelmlen ergonominen kehitvs ja treat tyontekijaan kohdistuvat fyysiset vaikutukset. fTho ergonomic development of timber harvesting work methods and some physical effects on workers"?! FOLIA FOR (HELSINKI) 131. 1-22, nius. YhTlfrecd. 1372J. [Engl, summ.]--A literature review traces the ergonomic development in Finland in the late 19G0s and early 1970s. It examines the development of work methods for the power saw from the point of view of physio logical stress and the time the worker is exposed to vibration. Ways were sought to change the work methods to reduce their untoward effects on the worker. Forest work methods were developed by simplifying labor-intensive methods and by increasing mechanization. Mechanization changes ergonomic problems from the consequences of the use ol muscular energy to the effects caused by the use of nervous energy and psychic stress and the effects caused by the machines such as vibration, swaying and noise and the working conditions of the machine operator. Labor-intensive methods were simplified bv in creasing, the length of timber, which increased Iho stress of bunching, and by simplifying bucking and limbing, which increases the time of exposure to vibration since it necessitates limbing by power saw. The omission of measuring in the light phase of work increased the intensity CO of the work. Felling alone for processors requires less muscular 00 energy expenditure than the tradiilonal methods of work, but the labor I*. output 1$ smaller than in felling in connection with miter Work. Working in deep snow is an exception whcie felling alone ts heavy work as it ^ requires a lot of movement. Methods can be developed that are ergoQ nomtcallv better, c.g.. bv Ravin : hunchtn-* woih !. rnc'-r s ' / phasing the bunching into small lots. However, reducing the bunching Work will add to the disadvantages of jxnier sawing, Recuemg ITt vibration of the power saw, adequate breaks, shortening ihe u,,il/ Sawing time and using a correct sawing terhmnuc seem to be the only current methods for reducing the risk of vibration damage.--J. E, F. 9607. REINHOLD, R., K. RASC1IE and W. WERNER. (Bezirkstnsp. Gesundheilscliutz Betr., Kurt-Beithvl Strasse 39, 90 Karl-MarxSiadt, East Gcr.) Hoelifrequenter Laerm und seine WTrkung auf den