A new method for the measurement of biogenic silica in suspended matter of coastal waters: using Si:Al ratios to correct for the mineral interference

2005 ◽  
Vol 25 (5-6) ◽  
pp. 697-710 ◽  
Author(s):  
Olivier Ragueneau ◽  
Nicolas Savoye ◽  
Yolanda Del Amo ◽  
Jo Cotten ◽  
Benoît Tardiveau ◽  
...  
1992 ◽  
Vol 25 (9) ◽  
pp. 93-100 ◽  
Author(s):  
T. A. Aboul-Kassim

Detergents from 26 stations, representing four different zones from pollution view points, were sampled biweekly during 1985-1986 from the coastal waters of Alexandria, Egypt. Samples were analyzed for anionic surfactants, total suspended matter and salinity. The main objective of this work is to study retrospectively the relation between the state of pollution of Alexandria waters by anionic detergents and sewage and waste water disposal. A comparison with background level was performed to evaluate the deviations in anionic detergent concentrations. The absolute detergent values varied between a minimum of 0.02 mg LAS/l and a maximum of 12.55 mg LAS/l. The estimated detergent loadings reaching the study area are about 86, 109 & 7000 Kg/day through zones I, II & III, respectively. Based on the daily discharge of detergents to the waters of Alexandria, the population equivalent will vary from 0.40-0.73. The expected total loading of detergents to the area is projected to be approximately double between now and year 2000.


1971 ◽  
Vol 20 (1) ◽  
pp. 61-84 ◽  
Author(s):  
Argeo Magliocca

This paper describes the salinity, temperature, dissolved oxygen and inorganic phosphate distributions for the Brazil northern coast, with special reference to the marine environment off the Amazon and Pará rivers. The change in direction of the coast with the consequent change in the axis of the Guiana Current together with the large amount of suspended matter contributed by river waters, create peculiar conditions on the continental shelf. These conditions are also influenced by the wind and rain system. Out from the continental shelf Tropical Atlantic oceanic conditions are prevalent. In contrast to the very low fertility of the Guiana Current the coastal waters, directly influenced by the rivers, show a supersatu ration of dissolved oxygen. The nutrients absorbed by suspended matter are partly liberated when the rivers mix with the oceanic water. However, the low light penetration restricts the oxygen production to only few meters.


Author(s):  
Walter Puls ◽  
Manfred Lobmeyr ◽  
Agmar Müller ◽  
Matthias Schünemann ◽  
Herbert Kühl

Sensors ◽  
2008 ◽  
Vol 8 (7) ◽  
pp. 4165-4185 ◽  
Author(s):  
Sylvain Ouillon ◽  
Pascal Douillet ◽  
Anne Petrenko ◽  
Jacques Neveux ◽  
Cécile Dupouy ◽  
...  

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