Attalea (plant) important economically. Products extracted from "A. speciosa" were reported to support over 300,000 households in the Brazilian state of Maranhão in 2005, and in 1985 it was estimated to support over 450,000 households throughout the Brazil. Piassava fibres, extracted from the leaf bases of "A. funifera", are commercially important, and generated about US$20 million in annual income to Brazilian farmers in 1996. Attalea (plant) Attalea is a large genus of palms native to Mexico, the Caribbean, and Central and South America. This pinnately leaved, nonspiny genus includes both small palms lacking an aboveground stem and large trees. The genus has
Simultaneously extracted metals and Acid-volatile sulfide initially unbound to AVS (due to insufficient AVS in the sediment to "mop up" all the metal ions). The concentrations of metals in the acid solution can be measured by a number of analytical chemistry methods, including atomic emission spectrometry, atomic absorption spectrometry (AAS), or mass spectrometry. These are known as "simultaneously extracted metals" because they are the metals liberated from the sediment "while the volatilization of sulfide is occurring". Metals extracted from sediment by digestion, or with a different acid than HCl are "not" simultaneously extracted metals. By correcting appropriately for dilution, the SEM concentration in the sediment can