Emprego da amostragem de suspensão na determinação de Cu e Zn em lapa antártica e Ni em sedimento de rio por espectrometria de absorção atômica com chama

• Main Authors: Alves,Flávia de Lima, Jardim,Wilson de Figueiredo, Cadore,Solange, Arruda,Marco Aurélio Zezzi, Smichowski,Patricia, Marrero,Julieta
• Format: Article in Journal/Newspaper
• Language: Portuguese
• Published: Sociedade Brasileira de Química 2001
• Subjects: antarctic limpets; river sediment; flame atomic absorption spectrometry; slurry; Antarctic; Lapa; Antarc*; Antártica
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422001000600009

In order to demonstrate the feasibility of slurry sampling for environmental studies, different methodologies were developed for Cu and Zn in antarctic limpets and Ni in river sediment with FAAS detection. Studies focusing particle size, acid concentration, slurry stability, selectivity, among others were carried out in order to define the better conditions for slurry analysis. A study related to the depth profile for Ni in the Atibaia River sediment was made after optimization conditions for this element. For accuracy check, certified reference material was used as well as decomposition with microwave oven.