By S. Langard, S. Langård
Organic and Environmental features of Chromium specializes in the organic and environmental elements of chromium and its compounds, with emphasis at the most vital features in their toxicology and body structure. issues coated diversity from the construction and occupational publicity of chromium compounds to the presence of chromium in air, soil, and normal waters. The purposes of chromium in mobilephone biology and drugs also are discussed.
Comprised of eleven chapters, this quantity starts with an outline of the poisonous and carcinogenic results of chromium and chromium compounds, through a dialogue at the construction and occupational publicity of chromium compounds. The reader is then brought to the extra universal analytical equipment utilized in the decision of chromium in environmental and organic samples. next chapters discover the dietary position of chromium; absorption, delivery, and excretion of chromium in people and animals; mutagenic and cytogenetic results of chromium compounds; and organ toxicity of chromium in animals. The carcinogenic results of chromium, together with its results at the epidermis, also are considered.
This monograph should be of curiosity to scholars, practitioners, and researchers within the fields of biology, body structure, and chemistry, in addition to people with an target curiosity within the ways that chromium and its compounds act in organic fabrics and within the human surroundings.
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Additional resources for Biological and Environmental Aspects of Chromium
Stern 40 the tanning process requires a basic chromium salt, it is necessary to reduce the sodium dichromate with either sugar or sulfur dioxide in acid solution. g. oxalic acid, acetic acid, formic acid, formaldehyde) in significant quantities and carried along into the tanning process. The majority of tanneries do not produce their own tanning liquor, and a wide number of proprietary products are available for direct use. Tanning is accomplished in large vats where the hides are circulated either on drums or with paddles.
Gibson, R. L. and Stockinger, H. E. (1964) in Occupational Diseases. A Guide to their Recognition (Gfafer, M. ) PHS Pub. 1097, pp. 1 2 0 122, USDHEW. Müos, J. Ε. (1947) Ind. Med. 16, 4 0 4 - 4 0 5 . , Oswald, J. , Draper, C. R. and Pinner, R. (1954) in Chromium Plating (Draper, C. ), Teddington. C. NIOSH (1975) Criteria for a Recommended Standard for Occupational Exposure to Chromium VI. C. ( 7 6 - 1 2 9 ) . A. , Mikami, H. and Murao, M. (1978) Thorax 33, 3 7 2 - 2 7 4 . Okubo, T. and Tsuchiya, K.
25 ? 25 ? a. Range in parenthesis. b. Based on analysis of standard samples. e. 2-seconds old) fume may contain 5% water soluble Cr(VI) or more. A conservate approach would be to consider all chromium as Cr(VI) in this industry. 9 Process dependent exposure to chromium. 29 30 R. M. Stern is found only in 4% of the particles, while the 10% Cr content of the MIG fume is distributed among over 60% of the particles analyzed. 9. Here the average 8-hour exposure to total fume, total Cr, soluble Cr(VI) and insoluble Cr(VI) is shown for MIG/SS, and MMA/SS welders, together with values expected in the general nonstainless welding shop background.