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pro vyhledávání: '"Carmem Lúcia Porto da Silveira"'
Autor:
Rogério Ribeiro de Oliveira, Carmem Lúcia Porto da Silveira, Alessandra Costa Magalhães, Rodrigo Penna Firme
Publikováno v:
Floresta e Ambiente, Vol 12, Iss 1, Pp 50-56 (2024)
Resumo A produção e o estoque de serapilheira no Maciço da Pedra Branca (RJ) foram monitorados por um ano. A serapilheira produzida foi 7.533 kg.ha-1.ano-1; a estocada sobre o solo foi 7.364 kg.ha-1. Na primeira, a concentração dos metais variou
Externí odkaz:
https://doaj.org/article/77d07203e0f742798d95c4cb80812c25
Publikováno v:
Química Nova, Vol 31, Iss 8, Pp 1948-1952 (2008)
Eight trace elements were determined in 20 Brazilian brands of grape juice, distributed over the country. Highest measured concentrations (As: 0.016; Cd: 0.010; Cr: 0.060; Cu: 1.28; Ni: 0.032; Pb: 0.016; Sb: 0.0040 and Zn: 1.44 mg L-1) comply with Br
Externí odkaz:
https://doaj.org/article/ef7824693e0a4f608bd9c4680a39dd97
Autor:
Anderson Araújo Rocha, Norbert Miekeley, Carmem Lúcia Porto da Silveira, Maria Carmem Moreira Bezerra
Publikováno v:
Química Nova, Vol 21, Iss 5, Pp 584-589 (1998)
Results on the optimization of analytical methods for the determination of phosphorus in phosphino-polycarboxylate (PPCA), used frequently as scale inhibitor during oil production, by ICP-AES and ICP-MS are presented. Due to the complex matrix of pro
Externí odkaz:
https://doaj.org/article/1d7b874e09864d1b95df1ca42146ef71