APPLICATION OF NON-DESTRUCTIVE X-RAY FLUORESCENCE SPECTROMETRY TO THE ANALYSIS OF SUSPENDED MATTER IN SEA WATER
In the framework of remote sensing studies concerning coastal transport of pollution in the Northern Adriatic Sea, a method has been developed for the quantitative determination of sulphur, iron, titanium, calcium, phosphorus, silicon, aluminium, magnesium in suspended matter of sea water. The suspended material was collected by filtering on millipore membrane filters with pore width of 0.45 mu and directly analysed by Xray spectroscopy. For calibration dried solution and particulate standard samples were used. Limits of sensitivity and precision of the method are reported. Correlations between the concentration of these elements and the total suspended matter/chlorophyll are discussed. The aim is to study the geochemical composition of particulate matter and its variations within the geographical site of the sea basin and the seasonal conditions. The approach is to consider aluminium and the other elements normalized on Al. On the basis of a matrix correlation analyses of some sets of data chosen in the restricted area for investigation, some hypothesis on superficial distribution of clay, carbonate, iron hydrous oxides and other mineral detrites, are taken into account. The results confirm the complex situation existing in the offshore area of the Venice lagoon from a geochemical point of view. The suspended matter seem to be argillaceous in the Southern part of the investigated area and semi argillaceous with hydrous oxides and carbonates in the Northern part which is influenced by the Piave river.
Bibliographic Reference: INTERN. J. ENVIRON. ANAL. CHEM., VOL. 20 (1985), PP. 55-67
Record Number: 1989126000700 / Last updated on: 1988-02-01
Available languages: en