[
www.washingtonpost.com]
Quote
"The average lead concentration of cocoa beans was <- 0.5 ng/g, which is one of the lowest reported values for a natural food," they wrote. "In contrast, lead concentrations of manufactured cocoa and chocolate products were as high as 230 and 70 ng/g, respectively, which are consistent with market-basket surveys that have repeatedly listed lead concentrations in chocolate products among the highest reported for all foods. One source of contamination of the finished products is tentatively attributed to atmospheric emissions of leaded gasoline, which is still being used in Nigeria."
