Publicaciones 2011-2020

@article{RN333,
title = {Heavy Metal Content in Chilean Fish Related to Habitat Use, Tissue Type and River of Origin},
author = { S. Copaja and C. Perez and C. Vega-Retter and D. Veliz},
url = {/brokenurl#<Go to ISI>://WOS:000416178800008},
doi = {10.1007/s00128-017-2200-9},
issn = {0007-4861},
year = {2017},
date = {2017-01-01},
journal = {Bulletin of Environmental Contamination and Toxicology},
volume = {99},
number = {6},
pages = {695-700},
abstract = {In this study, we analyze the concentration of ten metals in two freshwater fish-the benthic catfish Trichomycterus areolatus and the limnetic silverside Basilichthys microlepidotus-in order to detect possible accumulation differences related to fish habitat (benthic or pelagic), tissue type (gill, liver and muscle), and the river of origin (four different rivers) in central Chile. The MANOVA performed with all variables and metals, revealed independent effects of fish, tissue and river. In the case of the fish factor, Cu, Cr, Mo and Zn showed statistically higher concentrations in catfish compared with silverside for all tissues and in all rivers (p < 0.05). In the case of the tissue factor, Al, Cr, Fe and Mn had statistically higher concentrations in liver and gills than in muscle (p < 0.05). For the river effect, the analysis showed higher concentrations of Cr, Mn and Pb in the Cogoti river and the lower concentrations in the Recoleta river. These results suggest that not all metals have the same pattern of accumulation; however, some metals tend to accumulate more in readily catfish, probably due to their benthic habit, and in liver and gill tissue, probably as a result of accumulation from food sources and respiration.},
keywords = {atherinopsidae, bioaccumulation, catfish chromium, fish fish, fresh-water, gill, heavy kidney, liver, marine metals, microlepidotus), muscle organs, sediments, silverside teleostei},
pubstate = {published},
tppubtype = {article}
}

@article{RN281,
title = {Effects of a Dam Reservoir on the Distribution of Heavy Metals in Two Chilean Native Freshwater Fish Species},
author = { S. Copaja and G.S. Munoz and V. Nunez and C. Perez and I. Vila and D. Veliz},
url = {/brokenurl#<Go to ISI>://WOS:000378779300006},
doi = {10.1007/s00128-016-1838-z},
issn = {0007-4861},
year = {2016},
date = {2016-01-01},
journal = {Bulletin of Environmental Contamination and Toxicology},
volume = {97},
number = {1},
pages = {24-30},
abstract = {In order to determine the effect of a dam on metal concentrations in riverine fish species, we studied fish inhabiting the influent (Cachapoal River) and effluent (Rapel River) of the Rapel Reservoir in central Chile. Heavy metals were quantified in gills, liver and muscle of the catfish Trichomycterus areolatus and the silverside Basilichthys microlepidotus. Also, the bioaccumulation index (BAI) was estimated by considering heavy metal concentrations obtained from water and sediment. Results showed the presence of Al, Cu, Fe, Mn, Pb and Zn in the fish organs. The analysis showed high metal concentrations in catfish inhabiting the influent compared to those collected in the effluent. These results indicate a possible filter effect of the dam for most of the metals identified in the fish organs, because metal concentrations decreased in the effluent. Finally, catfish exhibited a larger BAI for most metals analyzed.},
keywords = {bay, bioaccumulation cadmium, catfish dams, fish fish, heavy index, lot metals, microlepidotus), organs, pollution, river, sediments, silverside tissues},
pubstate = {published},
tppubtype = {article}
}

@article{RN162,
title = {Comparative Measurements and Their Compliance with Standards of Total Mercury Analysis in Soil by Cold Vapour and Thermal Decomposition, Amalgamation and Atomic Absorption Spectrometry},
author = { M.A. Leiva and S. Morales and R. Segura},
url = {/brokenurl#<Go to ISI>://WOS:000315281300006},
doi = {10.1007/s11270-012-1390-3},
issn = {0049-6979},
year = {2013},
date = {2013-01-01},
journal = {Water Air and Soil Pollution},
volume = {224},
number = {2},
abstract = {Two methods to measure mercury concentration in soil are compared, and their compliance with international standards is determined: cold vapour atomic absorption spectrometry and thermal decomposition, amalgamation and atomic absorption spectrophotometry. The detection limit, quantification limit and uncertainty of these two analytical methods were evaluated and compared. The results indicated that thermal decomposition, amalgamation and atomic absorption spectrophotometry had a lower quantification limit and uncertainty than cold vapour atomic absorption spectrometry (quantification limit, 0.27 vs. 0.63 mg kg(-1); expanded uncertainty, 9.30 % vs. 10.8 %, respectively). Thermal decomposition, amalgamation and atomic absorption spectrophotometry allowed the determination of the base values for the concentration of mercury in soil recommended by international standards, achieving a lower detection limit than cold vapour atomic absorption spectrometry under the study conditions. In addition, thermal decomposition, amalgamation and atomic absorption spectrophotometry represent a more environmentally friendly alternative for mercury determination because this method uses fewer reagents and therefore generates less waste.},
keywords = {compliance, emissions, environmental chemistry, fish, fluorescence impact, in measurement mercury samples, sediments, soil, spectrometry, standards uncertainty, validation},
pubstate = {published},
tppubtype = {article}
}