February 24, 2000 2:55 pm
Katherine Heggeman, a Bates College senior from Standish, has discovered a method for purifying arsenic-contaminated groundwater in Zimapan, Mexico. Heggeman, a geology major at Bates, will present research related to her senior honors thesis at the 35th annual meeting of the Northeastern Section of the Geological Society of America, March 13-15 in New Brunswick, N.J.
March 27, 1996 10:30 am
The drinking water in Zimapán has an average arsenic concentration of 0.3 mg/L. The WHO drinking water standard is 0.05 mg/L. The residents of Zimapán are beginning to show ill health effects of chronic arsenic poisoning which include skin cancer and kidney and liver disease. Montgomery and Tichenor are trying to determine the source of the arsenic and the pathway by which it enters the groundwater supply.