||Seattle Distribution System Corrosion Control Study. Volume III: Potential for Drinking Water Contamination from Tin/Antimony Solder.
Herrera, Carlos E. ;
Kirmeyer, Gregory J. ;
Hoyt, Brian P. ;
||Seattle Dept. of Water, WA. Water Quality Div.;Municipal Environmental Research Lab., Cincinnati, OH.
Potable water ;
||Some EPA libraries have a fiche copy filed under the call number shown.
This study was conducted to evaluate the potential for leaching of metals into drinking water from tin/antimony solder. The study consisted of five research phases: (1) A theoretical investigation of the corrosion products formed from the solder was conducted using pe-pH diagrams and galvanic coupling relationships; (2) static laboratory metal leaching tests were performed to determine the extent of antimony leaching from the solder; (3) field water samples were taken from buildings which contained tin/antimony from tin/antimony soldered plumbing; (4) continuous flow metal leaching tests compared metal leaching from tin/antimony solder with lead/tin solder under three water treatments - lime plus sodium carbonate, lime plus sodium bicarbonate, and lime plus bicarbonate plus silicate; (5) corrosion films that formed on both tin/antimony and lead/tin solder were analyzed by Scanning Electron Microscopy and X-ray diffraction.