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Química Nova

versión On-line ISSN 1678-7064


SANTOS, Maria de Lourdes Souza; MUNIZ, Kátia; FEITOSA, Fernando Antonio do Nascimento  y  BARROS NETO, Benício de. Study of different forms of phosphorus in the Amazon continental shelf waters. Quím. Nova [online]. 2007, vol.30, n.3, pp. 569-573. ISSN 1678-7064.

Hydrological samples were collected on the continental shelf of the Amazon river to determine particulate organic and inorganic matter, dissolved organic phosphorus (DOP), phosphate, total particulate phosphorus (TPP), chlorophyll a, temperature, salinity, pH, water transparency, dissolved oxygen (DO) and saturation rate. The objective was to study the forms of DOP, phosphate and TPP. In the euphotic layer, the fluvial discharge from the Amazon river favored the distribution of phosphate, TPP and DOP. In the aphotic layer, the phosphate concentration increased due to the decomposition of DOP and TPP. This increase is due to the absence of photosynthetic processes.

Palabras clave : Amazon; phosphorus; chlorophyll a.

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