Interpretation of Metal Concentrations in Estuarine Sediments of Florida Using Aluminum as a Reference Element

Schropp, Steven J.; Lewis, F. Graham; Windom, Herbert L.; Ryan, J. D.; Calder, Fred D.; Burney, Louis C.

doi:10.2307/1351913

Cited by 294 publications

(104 citation statements)

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“…Concentrations of six trace metals were plotted against that for aluminum and then compared to expected ratios for uncontaminated Florida coastal sediments reported by Schropp et al (1990).…”

Section: Chemical Analysis: Sedimentsmentioning

confidence: 99%

Florida seagrass habitat evaluation: A comparative survey for chemical quality

Lewis

Dantin

Chancy

et al. 2007

Environmental Pollution

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Some anthropogenic contaminants were prevalent in seagrass and their rooted sediments but the biological significance is unknown. AbstractContaminant concentrations were determined for media associated with 13 Florida seagrass beds. Concentrations of 10 trace metals were more commonly detected in surface water, sediment and two seagrass species than PAHs, pesticides and PCBs. Concentrations of copper and arsenic in surface water exceeded Florida aquatic life criteria more frequently than other trace elements. Total organic carbon, mercury, chromium, zinc, total chlordane, total PAHs, total PCBs, DDD and DDE were significantly greater in seagrass-rooted sediments than adjacent non-vegetated sediments. Total DDT, DDD, DDE, total chlordane, arsenic, copper and nickel exceeded proposed sediment quality guidelines at six of 13 grass beds. Pesticides, PAHs, and PCBs were below detection in seagrass tissues. Mercury, cadmium, nickel, lead and silver were detected in 50% or more of the tissues for Thalassia testudinum (turtle grass) and Halodule wrightii (shoal grass). Spatial, interspecific and tissue differences were usually an order of magnitude or less.

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Section: Chemical Analysis: Sedimentsmentioning

confidence: 99%

Florida seagrass habitat evaluation: A comparative survey for chemical quality

Lewis

Dantin

Chancy

et al. 2007

Environmental Pollution

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“…Otras razones posibles para un metal que excede el 95% de límite de predicción incluye: 1) errores de procedimiento (por ejemplo, contaminación de muestra durante la recolección, manejo y durante el almacenamiento, y 2) la probabilidad que unas pocas muestras de áreas naturales contengan metales cuyas concentraciones exceden los 95% de límites de predicción. Los puntos que están fuera de los límites de predicción deben ser interpretados a la luz de información adicional disponible sobre fuentes posibles de contaminación metálica, la información de otras estaciones cerca, y la evaluación del manejo de la muestra o errores analíticos como lo señala Schropp et al (1990). En Bahía Culebra se tiene que las estaciones 1, 2 y 3 están prácticamente en el mismo sitio (Fig.…”

Section: Discussionunclassified

“…El análisis requiere que los datos tengan varianza constante y sean distribuidos normalmente (Schropp & Windom 1988, Schropp et al 1990, Soto-Jiménez & Páez-Osuna 2000. La transformación de los datos al logaritmo de la razón de concentraciones elemento/aluminio cumple con esta condición (Schropp & Windom 1988).…”

Section: Materiales Y Métodosunclassified

“…Las técnicas de normalización son las más usadas para interpretar las concentraciones de metales observadas en los sedimentos. Algunas de ellas han incluido el tamaño de grano (Ackerman et al 1983), el carbón orgánico total (Windom et al 1989), y los elementos como hierro (Trefry et al 1985, Daskalakis y O'Connor 1995, aluminio (Hanson et al 1993, Schropp et al 1990) y litio (Loring 1990).…”

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“…La normalización de la razón del logaritmo de las concentraciones del elemento/aluminio y la regresión lineal con sus límites de predicción, es una herramienta interpretativa utilizada por varios autores para determinar el enriquecimiento por metales pesados en los sedimentos marinos (Schropp & Windom 1988, Schropp et al 1990. Esta metodología toma en cuenta la variabilidad natural de los metales y determina el enriquecimiento respecto a las concentraciones naturales esperadas.…”

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Un método para evaluar el enriquecimiento de metales en sedimentos marinos en Costa Rica

Lizano

Alfaro

Matarrita

2015

RBT

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A method to evaluate metal enrichment in marine sediments. In order to evaluate metal enrichment in sediments , a method is proposed and tested in Bahia Culebra and the Golfo de Nicoya, Costa Rica through the normalization of the elements against aluminum, and by linear regression of the logarithm of the concentrations of different elements respect to aluminum. The distributions of the elements manganese, and strontium of Bahía Culebra did not satisfy the tests of normalization and linear regression, indicating a nonnatural distribution or enrichment of these elements in this region. In the Golfo de Nicoya the elements copper , zinc , rubidium and the strontium did not satisfy the test of normality or the linear regression with respect to aluminum, indicating a possible enrichment of these elements. The majority of the concentrations of the elements in two sample sites, with the exception of chromium, are within the natural ranges in rocks or clays of marine sediments, and within the concentration ranges of other studies done in these same regions. Chromium has average values beyond the natural concentrations, the values of some samples in the Golfo de Nicoya are up to 10 times greater than the concentration value of a typical bay with high contamination of this element. Rev. Biol. Trop. 60 (Suppl. 2): 197-211. Epub 2012 April 01.

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Retrospective Analysis of Anthropogenic Inputs of Lead and Other Heavy Metals to the Hawaiian Sedimentary Environment

Carlo¹,

Spencer²

1997

Appl. Organometal. Chem.

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In this paper we present and discuss heavy‐metal concentrations in sediment cores from the Ala Wai Canal, a small urban drainage estuary in Honolulu, Hawaii (Oahu Island), and from selected soils and sediments collected in less impacted areas of Hawaii. We focus on lead and its isotope ratios to document the introduction, proliferation and subsequent phasing‐out of alkyl‐lead fuel additives in Honolulu over the past 60 years. Sedimentary lead increases from <10 ppm in the oldest (deepest) unimpacted portions of the cores to ˜750 ppm in sediments from the mid‐1970s; lead contents then decrease to a range of 100–300 ppm in the most recent deposits. Lead concentrations in the canal sediments closely track the consumption of alkyl‐lead fuel additives used on Oahu in the middle of this century. More than 90% of the lead in certain core intervals is of anthropogenic origin. Stable lead isotope ratios reflect changes in the estuary's sources of lead and show that this lead has an isotopic signature distinct from natural samples. Undisturbed layers of sediments in the Ala Wai canal track the average composition of anthropogenic lead used in its Honolulu watershed through time. The distinctive pattern of lead isotopes measured in Ala Wai Canal sediments can be used to distinguish anthropogenic from natural lead in Hawaiian rural locations. Soils located away from point‐sources of contamination have isotopic compositions defined by mixtures of locally erupted volcanic rock, atmospheric dust and components similar to Ala Wai Canal anthropogenic lead. Natural lead concentrations in Hawaii are in the range of a few to a few tens of parts per million, with the high‐concentration end‐member occurring in a few selected intramountain basins where soils contain a significant component of continental dust fines scavenged by rainfall and concentrated by local geological conditions. Rural watershed material exhibits small but discernible elevations in lead concentrations due to anthropogenic effects. Other metals (cadmium, copper and zinc) in the Ala Wai Canal sediments also display patterns consistent with increased fluxes of metals attributable to anthropogenic activity. Unlike lead, no clear maxima are observed in sediments deposited during the mid 1970s. Rather, a continued input of these metals is attributed to expanding anthropogenic activity in the Ala Wai Canal watershed. © 1997 by John Wiley & Sons, Ltd.

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Interpretation of Metal Concentrations in Estuarine Sediments of Florida Using Aluminum as a Reference Element

Cited by 294 publications

References 21 publications

Florida seagrass habitat evaluation: A comparative survey for chemical quality

Florida seagrass habitat evaluation: A comparative survey for chemical quality

Un método para evaluar el enriquecimiento de metales en sedimentos marinos en Costa Rica

Retrospective Analysis of Anthropogenic Inputs of Lead and Other Heavy Metals to the Hawaiian Sedimentary Environment

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