Labile copper and zinc fractions under different salinity conditions in a shipyard area in the patos lagoon estuary, south of Brazil

Abstract

Recebido em 23/10/12; aceito em 9/5/13; publicado na web em 17/7/13Copper and zinc are common elements in paint residues and can be toxic to estuarine organisms. This study aims to determine the labile dissolved and labile particulate fractions (LPFs) of copper and zinc in the estuarine waters of a shipyard in southern Brazil under different salinity levels and in different seasons. The labile dissolved fraction was determined using the diffusive gradient in thin-film ( ) concentration were related to changes in their physico-chemical parameters and as a result of boat maintenance activities.

Effects of Salinity Sources on Growth, Physiological Process, Yield, and Fruit Quality of Grafted Rock Melon (Cucumis melo L.)

“…Salt addition as a nutrient solution has high potential, is cost-effective, and is easy to be adapted, which can increase rock melon quality. The success has been proven for a variety of horticultural crop species including cucumber (Huang et al, 2009), tomatoes (Azarmi et al, 2010), and watermelon (Costa et al, 2013). Accumulation of salt may reduce water absorption capacity that could increase dry-matter components.…”

Avaliação da contaminação ambiental por metais pesados, através da análise de peixes coletados da Lagoa Mangueira – RS

“…Pode-se destacar, a avaliação geoquímica de metais em amostras de sedimentos superficiais do estuário da Lagoa dos Patos (NIENCHESKI et al, 1994;MIRLEAN et al, 2001;MIRLEAN et al, 2003;NIENCHESKI et al, 2004;SANTOS et al, 2004a;CALDAS et al, 2013;COSTA et al, 2017), da Lagoa Mirim (SANTOS et al, 2003;SANTOS et al, 2004b), do Saco do Laranjal (BETEMPS et al, 2012) e do Canal São Gonçalo (SANCHES FILHO et al, 2017). Além disso, encontra-se estudos da determinação da concentração de metais em amostras de água da Lagoa Mangueira (SANTOS et al, 2018a), Lagoa Mirim (FRIEDRICH et al, 2006, e Lagoa dos Patos (WALLNER-KERSANACH et al, 2009;BARBOSA et al, 2012;MILANI et al, 2012;NIENCHESKI et al, 2015;COSTA et al, 2013;WINDOM et al, 2003;COSTA et al, 2013;WINDOM et al, 1999) bem como, a investigação da bioacumulação de metais em amostras de espécies de peixes do Canal São Gonçalo (LEMUS et al, 2000) e da Lagoa dos Patos (SANCHES FILHO et al, 2013;KÜTTER et al, 2009). Relatos de determinação da concentração de metais pesados em uma espécie de camarão (Farfantepenaeus paulensis) pescado na Lagoa dos Patos (PINTO et al, 2013) e do efeito de hidrocarbonetos transportados pelo escoamento urbano em análise de sedimento do Canal São Gonçalo (SANCHES FILHO et al, 2017b) são encontrados na literatura.…”

Evaluation of Discrete and Passive Sampling (Diffusive Gradients in Thin-films – DGT) Approach for the Assessment of Trace Metal Dynamics in Marine Waters – a Case Study in a Small Harbor

“…[27] One of the major pollution sources in coastal waters are shipyards, harbors and marinas. [28,29] Activities in these areas may have a great impact on coastal line as various contaminants like trace metals, antifouling paints and particles, oil, solvents or water residues from ship hull washing are discharged in the water. [28] Biofouling is a big problem for both, small and large vessels leading to reduction of speed and increased fuel consumption.…”

“…[28,29] Activities in these areas may have a great impact on coastal line as various contaminants like trace metals, antifouling paints and particles, oil, solvents or water residues from ship hull washing are discharged in the water. [28] Biofouling is a big problem for both, small and large vessels leading to reduction of speed and increased fuel consumption. [30] In shipyards, harbors and marinas local sources of contamination are Cu and Zn stemming from paint waste.…”