Gel permeation chromatography method was applied to evaluate the Zn metal distribution levels in the organic fraction from sediments collected in the Patos Lagoon estuary. The analysis was performed based in metal distribution ...

Arsenic distribution in sediments of the Mirim–Patos lagoonal system is investigated. Deposits of fresh water Mirim Lagoon and those of the fresh water part of the Patos Lagoon contain 2.5 and 7.7 mgkg 1, respectively, ...

Lettuce (Lactuca sativa) seeds play a significant role in toxicity tests of isolated chemicals, pesticides, and environmental samples. Commonly, the main variables under study are the rate of seed germination and root ...

High lead concentrations up to 5478 mg kg-1 were detected in dry atmospheric precipitations in Rio Grande city and adjacent area. Lead anomalies cover up to 30% of the study area. Lead concentration measurement in dry ...

Arsenic levels (up to 130 mg kg−1) substantially exceeding the official threshold have recently been documented in beach and nearshore sediments along more than 50 km of coastline in the Brazilian state of Espírito Santo ...

We studied the distribution, bioavailability and speciation of copper in subtropical sandy soils exposed to long-term applications of copper-based fungicide. In the surface horizon of the contaminated soils, bioavailable ...

In a factorial design study involving the determination of F- by ion-selective electrodes, a significant interference was demonstrated for Fe, with an even more pronounced interference for Al. The fluoride leaching procedure ...

The demand for simple and rapid bioassays in ecotoxicological evaluations is of paramount importance in order to speed upenvironmental monitoring programs. In this study we performed bioassays with lettuce seeds and two ...

The alteration in the quality of groundwater in the industrial zone of Brazil’s southernmost state was assessed by a hydrogeochemical study. In 70-85% of the studied area, fluoride, nitrate and phosphate in groundwater ...

A concentração de fluoreto foi determinada, através do método potenciométrico, com eletrodo íon seletivo, na água da chuva e na água subterrânea, no município de Rio Grande. Os teores de fluoreto na água da chuva variaram ...

A concentração de fluoreto foi determinada, através do método potenciométrico, com eletrodo íon seletivo, na água da chuva e na água subterrânea, no município de Rio Grande. Os teores de fluoreto na água da chuva variaram ...

This paper characterizes major ion distributions and investigates whether groundwater exerts a major control on the chemical functioning of Mangueira Lagoon, a large (90 km long), shallow (*4–5 m deep), and fresh coastal ...

Nickel and vanadium were tested as tracers of oil refinery emission distribution in populated area of Rio GrandeRS. The anomalies of these elements in surface soil are considered a long-term reflection of the emissions in ...

This study was aimed at determining the range and spatial distribution of mercury in a geographical area influenced by the emissions of phosphate fertilizers industries in Rio Grande, Brazil. The case study demonstrated ...

In this study, we measured the mercury concentration in 27 different fish species with high commercial value. Samples were taken from a region characterized by the diversity of aquatic environments. Mercury concentration ...

Present study has continued the investigation on distribution of mercury in estuarine sediments of Patos Lagoon which began whilst assessing the after-effect of enormous accidental discharge of sulfuric acid into the ...

The current article presents the first data on physical-chemical parameters of wet precipitation collected at single collection point in the city of Rio Grande, during the period of 12 months in 1997-1998. The employed ...

Despite its ecological , economic s and geopolitical importanc e , Mirim lagoon is still poorly known .In this paper we present the first data about organic composition and nutrient levels in lagoon sediments . Total ...

The southern area of the Patos Lagoon estuary has been subjected to intense industrial and port-related activities which have not only caused meaningful changes in the landscape but also degraded aquatic resources by ...