scholarly journals Chemistry of Stream Sediments and Surface Waters in New England

2004 ◽  
Author(s):  
Gilpin R. Robinson ◽  
Katherine E. Kapo ◽  
Jeffrey N. Grossman
Keyword(s):  
New England ◽  
Surface Waters ◽  
Stream Sediments

scholarly journals Mercury Speciation and Microbial Transformations in Mine Wastes, Stream Sediments, and Surface Waters at the Almadén Mining District, Spain

2004 ◽  
Vol 38 (16) ◽  
pp. 4285-4292 ◽  
Author(s):  
John E. Gray ◽  
Mark E. Hines ◽  
Pablo L. Higueras ◽  
Isaac Adatto ◽  
Brenda K. Lasorsa
Keyword(s):  
Surface Waters ◽  
Stream Sediments ◽  
Mercury Speciation ◽  
Mining District ◽  
Mine Wastes ◽  
Microbial Transformations

scholarly journals Geochemical mapping of arsenic in surface waters and stream sediments of the Quadrilátero Ferrífero, Brazil

2015 ◽  
Vol 68 (1) ◽  
pp. 43-51 ◽  
Author(s):  
Raphael de Vicq Ferreira da Costa ◽  
Mariangela Garcia Praça Leite ◽  
Fellipe Pinheiro Chagas Mendonça ◽  
Hermínio Arias Nalini Jr.
Keyword(s):  
Surface Waters ◽  
Limit Of Detection ◽  
Arsenic Concentration ◽  
Stream Sediments ◽  
Regional Study ◽  
Partial Digestion ◽  
Quadrilátero Ferrífero ◽  
History Of ◽  
High Concentrations ◽  
First Time

A regional study on the arsenic concentration in surface waters and stream sediments, with a density of one sample every 13 km2, was carried out for the first time in the Quadrilátero Ferrífero (Brazil). The region was divided into 3rd order catchment basins, in which 512 areas were sampled. The arsenic concentration was determined in waters and stream sediments after partial digestion with the aid of ICP-OES. The arsenic values found in surface waters ranged from 57.70 to 414 µg.L-1, while for stream sediments, arsenic concentrations ranged from 0.63 to 1691 mg.kg-1, and from the 512 sampling points, 135 (26%) had arsenic concentrations above the limit of detection, which was 0.63 mg.kg-1. It was also found that 106 3rd order catchment basins had values above the third quartile, (5.09 mg.kg-1). The results show that high concentrations of this element are strongly related to the presence of Nova Lima rocks that contain minerals rich in arsenic. However, the anthropogenic influence in such high concentrations cannot be ruled out, as the region has a history of over 300 years of gold mining.

Mercury and Arsenic in Stream Sediments and Surface Waters of the Orcia River Basin, Southern Tuscany, Italy

2016 ◽  
Vol 227 (11) ◽  
Author(s):  
L. Chiarantini ◽  
M. Benvenuti ◽  
M. Beutel ◽  
P. Costagliola ◽  
S. Covelli ◽  
...  
Keyword(s):  
River Basin ◽  
Surface Waters ◽  
Stream Sediments
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