Lithium/aluminium alloys. A problem material for biological monitoring
| Autor: | A. Bahemann-Hoffmeister, K. Bencze, C.H. Pelikan, A. Kronseder |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Environmental Engineering
chemistry.chemical_element Mineralogy Urine Air Pollutants Occupational Lithium Blood serum Aluminium Aluminium alloy Alloys Environmental Chemistry Humans Waste Management and Disposal Skin Aqueous solution Dust Pollution Bioavailability chemistry visual_art visual_art.visual_art_medium Room air distribution Irritants Saturation (chemistry) Nuclear chemistry Aluminum Environmental Monitoring |
| Zdroj: | The Science of the total environment. 101(1-2) |
| ISSN: | 0048-9697 |
| Popis: | Investigations on aqueous and nonaqueous media have shown that the dust particles of lithium/aluminium alloy are readily soluble in blood serum. Concentration of 10 mg A1 and 3 mg Li in 1 l serum constitute the saturation values in human blood serum at 20 degrees C. Further observations are intended to clarify the danger at the workplace. With a short-term exposure, the change in concentration of Li and Al was followed in the working environment and in the staff. Both elements (Li and Al) were determined in the working air, in the urine, the blood serum and on human skin with electrothermal AAS. On human skin, microerosions arise owing to hydrolytic destruction of the epidermis after long-term contact. The intensive irritant action of Li/Al dust is most relevant for preventive measures. It must also be considered that the Al values in the blood serum are raised by up to 50% in the presence of Li. The resorption and/or the bioavailability of Al is altered by Li. In the presence of Li up to a Li content of 2.5% in Al dust, a MAK (biological tolerance value, threshold limit value) of 1 mg Al/m3 room air (for the total dust) is recommended. |
| Databáze: | OpenAIRE |
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