Ductile-iron pipe employed in water distribution systems usually bears a seal coating of petroleum asphalt that is in direct contact with the water. Experimental evidence designed to simulate a "worstcase" scenario suggests that no significant contribution of polynuclear aromatic hydrocarbons to piped water should be expected from a relatively freshly seal-coated pipe. The total concentration of the six PAH examined was less than 1 ng/L, compared to the WHO recommended maximum concentration of 200 ng/L. Includes 7 references, tables, figures.
| Edition : | Vol. 74 - No. 3 |
| File Size : | 1
file
, 1.5 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 6 |
| Published : | 03/01/1982 |
