Manual for the geochemical analyses of marine sediments and suspended particulate matter

Distribuição e assinatura isotópica de Pb em sedimentos de fundo da Foz do Rio Guamá e da Baía do Guajará (Belém - Pará)

“…15 A determinação da concentração total dos metais foi realizada no Laboratório Comercial da ACME Ltda (Canadá). O procedimento padrão de tratamento das amostras inclui a dissolução de 250 mg da amostra com uma combinação multiácida na proporção 2:2:1:1 de H 2 O-HF-HCLO 4 -HNO 3 .…”

Concentration and fractionation of trace metals in surface sediments of intertidal Bohai Bay, China

“…A range of geochemical data normalization methods can be used to compensate for the influence of the natural variability in sediment mineralogical composition, and identify anomalous metal concentrations (e.g. Loring and Rantala, 1992;Kersten and Smedes, 2002).…”

Sediment records of past anthropogenic environmental changes in a barrier reef lagoon (Papeete, Tahiti, French Polynesia)

“…Calcium carbonate content was extracted using acetic acid as described by Loring and Rantala (1992) and measuring Ca in the extract. The acetic attack method was selected because it is one of the weakest chemical treatments that can be used to dissolve calcium carbonate (Loring and Rantala, 1988).…”