[Asbestos fibers in water distributing systems: A review]
López de Sa, A; Cirugeda, ME; Blanco, C
| HERO ID | 3648540 |
|---|---|
| In Press | No |
| Year | 1987 |
| Title | [Asbestos fibers in water distributing systems: A review] |
| Authors | López de Sa, A; Cirugeda, ME; Blanco, C |
| Journal | Alimentaria |
| Volume | 24 |
| Issue | 181 |
| Page Numbers | 37-42 |
| Abstract | One of the most widely used means of distributing water to homes is through asbestos-cement pipe that have nowadays, substituted other materials used traditionally. Several modifications on the pipe surface can occur depending on the quality of the water that flows through them producing asbestos fibers leaching which causes some of the water characteristics to change. The pH, hardness, alkalinity, temperature and dissolved oxygen and carbon dioxide are the main factors that can affect water aggressiveness. The Aggressiveness Index (AI) is given by the formula: AI= pH + log (A x H) where: A= total alkalinity as CO3Ca in mg/l. H= calcium hardness as CO3Ca in mg/l. being: IA minor than 10 very aggressive water. 10 minor o equal than IA and minor o equal than 12 moderately aggressive water. IA major than 12 non aggressive water. (Amer. Wat. Works Assoc., 1977). However this index is not a direct measure of water corrosivity but rather is an indicator since it does not take into account the presence of possible protective coating by certain water constituents. Hydrographic basin and season period influence the aggressiveness of water and consequently its behaviour in the water distribution systems. It can be concluded that drinking water can contain asbestos fibers, and as evidence exists which shows increased risk of several malignancies from inhalation of these fibers, the aim of this review is to determine whether asbestos ingested with drinking water is harmful to health or not. After the examination of epidemiological studies, fiber absortion by intestinal walls, as well as World Health Organization Reports and Regulations and reports of different countries, it can be inferred that the state of the art does not allow to stablish: a) Evidence of a cause and effect relationship between asbestos ingestion and gastrointestinal cancer. b) Restricted limits of asbestos fibers in drinking water. |
| Wosid | BCI:BCI198733069614 |
| Url | https://dialnet.unirioja.es/servlet/articulo?codigo=5253300 |
| Is Certified Translation | Yes |
| Dupe Override | No |
| Comments | Title in Spanish: Revisión actualizada de la problemática de las fibras de asbestos en las redes de distribución de agua potable |
| Is Public | Yes |
| Language Text | Spanish |