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Дата 14.05.2016 01:08:15 Найти в дереве
Рубрики 11-19 век; Флот; Версия для печати

цитата по ссылке на исследование 2014-го

"Lead in Ancient Rome's City Waters" (2014) by Hugo Delile, Janne Blichert-Toft, Jean-Philippe Goiran, Simon Keay, and Francis Albarède, Proceedings of the National Academy of Sciences, 111(18), 6594-6599;

In a 2014 study, Delile et al. sought to determine the concentration of lead isotopes in the sediment of the harbor. Core samples were taken from the channel that connected the Trajanic basin to the Claudian harbor and from the Canale Romano. It was found that "Lead isotopes in sediments from the harbor of Imperial Rome register the presence of a strong anthropogenic component....[which] demonstrate that the lead pipes of the water distribution system increased Pb contents in drinking water of the capital city by up to two orders of magnitude over the natural background." Compared to local spring water, this level was forty time greater in the early Roman empire (AD 100-250), although it is "unlikely to have been truly harmful."


В 100 раз превышение над естественным уровнем, в 40 раз больше в ранней империи (т.е. когда в основном свинцовые трубы использовали)

В Александрии тоже зафиксировано повышенное содержание свинца в слоях отложений, датируемых римским периодом (100-300 н.э.)

Véron et al. conducted a similar study of lead isotopes in the sediment of the ancient harbor at Alexandria and found that concentrations of lead doubled during the Roman period (AD 100-300), rising to 600 parts per million. It was "the highest Pb pollution ever encountered in ancient city sediments....an order of magnitude higher than those measured in sediment deposits from Sidon, the only other ancient harbor to have undergone similar geochemical investigation."



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