The analysis of aluminum, copper, lead and zinc involved a two-step extraction procedure. The second employed an iron hydroxide co-precipitation technique. Iron nitrate was added to the seawater and the pH was adjusted. Iron hydroxide and aluminum were filtered from the rest of the mixture. No. of Total Material Elements Conc.
Values listed in the chart above represent typical contents for major constituents.
Various NNI grades of plastics may vary from these values. 49, Page 2264, December 1977. Find out about our resin types . Nalge Nunc International.