Precipitation Runoff From Lead

Matthes, SA; Cramer, Stephen D.; Covino, Bernard S.; Bullard, Sophie J.; Holcomb, Gordon R.

doi:10.1520/stp10898s

Cited by 14 publications

(14 citation statements)

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“…This variation becomes negligible when considering projected areas. Literature data on lead runoff rates are scarce and fragmented: Schultze-Rettmer (1995) reported annual Pb runoff rates lying between 1 and 4 g.m -2 yr -1 , as calculated from a theoretical corrosion rate and Matthes et al (2002) reported values between 2.9 and 4.1 g.m -2 yr -1 . Runoff rates evaluated in this study are higher in both cases.…”

Section: Measurementsmentioning

confidence: 99%

Zn and Pb emissions from roofing materials – modelling and mass balance attempt at the scale of a small urban catchment

Gromaire

Robert-Sainte

Bressy

et al. 2011

Water Science and Technology

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Many studies have shown that roofing materials are an important source of metals in urban runoff. Today, in the context of the European Water Directive (2000/60 CE), the quantification of these emissions is necessary, and thus the development of assessment tools is needed. This study focuses on a small urban catchment (drained by a separative sewer system). Atmospheric fallout, road runoff, roof runoff and total runoff at the outlet of the catchment were sampled. The aim is (1) to verify the contribution of roofing materials to metallic flows of Zn and Pb at the catchment scale and (2) to try to model emissions using some models previously developed at the test-bed scale. These models have to be tested at different spatial scales. Results obtained confirm the strong contribution of roofing materials to Zn and Pb flows at the catchment scale. For Zn, models tested were successfully transposed and validated at the roof and the catchment scales, permitting a good quantification of Zn emissions. For Pb, the use of the models highlights some difficulties, especially concerning the identification and the quantification of lead surface areas implemented.

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Section: Measurementsmentioning

confidence: 99%

Zn and Pb emissions from roofing materials – modelling and mass balance attempt at the scale of a small urban catchment

Gromaire

Robert-Sainte

Bressy

et al. 2011

Water Science and Technology

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“…Con menor velocidad de runoff resultan los aceros recubiertos con aleación a base de aluminio/zinc, como "Galfan" (5 % Al) and Z-alulite (55 % Al), que presentan velocidad de runoff de zinc del orden de 2,04 y 0,67 g/m 2 , respectivamente, para el tiempo de este ensayo de 16 meses. En ambiente marino-costero [18] se ha medido la velocidad de zinc runoff hasta de 1,4 µm/año para zinc laminado o recubierto térmica-mente con recubrimientos de zinc/aluminio.…”

Section: Pérdida De Masa De Zinc Por El Efecto Runoffunclassified

“…Se ha informado en la literatura [18] , que la velocidad de runoff de un metal para un tiempo t puede calcularse basándose en el siguiente balance de masas (g/m 2 ):…”

Section: Velocidad Total De Corrosión De Zinc Y Balance De Masasunclassified

“…El análisis de la literatura muestra que, desde 1990, en Europa y Estados Unidos la atención de la ciencia de corrosión es enorme hacia el fenómeno runoff [11][12][13][14][15][16][17][18][19][20] . En muchos estudios llevados en condiciones naturales se ha dado la prioridad también a la determinación de la composición de las aguas (soluciones) runoff del metal, formadas durante las lluvias y recolectadas en regiones urbanas/industriales en Inglaterra, Francia, Polonia, Suecia, Suiza, Estados Unidos [16 y 19-25] , como una contribución importante para la contaminación de las aguas.…”

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First stages of zinc <i>runoff</i> in humid tropical climate

Angel-Meraz¹,

Véleva²,

Acosta³

2007

Rev. metal.

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“…As a consequence of metal runoff, in different countries in EU and USA have been detected traces of different metals (zinc, iron, copper and lead) in soils and waters, and in the biosphere, which are originated from the corroded surface of metal structures, and from ecological point of view they are dangerous. The analysis of the literature shows that since 1990 in Europe and USA the attention to the metal runoff is enormous [8][9][10][11][12][13][14]. The zinc retention capacity of the soil proved to be between 80 and 99%, hence allowing a small portion of introduced zinc in the rain or the natural zinc content of the soil to pass through the soil core during a continuous rain event [10].…”

Section: Introductionmentioning

confidence: 99%

Zinc corrosion runoff process induced by humid tropical climate

Véleva¹,

Angel-Meraz

Acosta

2007

Materials & Corrosion

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Zinc and hot dip galvanized steel are frecuently used metals in building application. They have relatively good atmospheric resistance to corrosion, due to its oxidation in air and formation of protective rust on its surface, which acts as barrier between the metal and environment. However, some part of the rust can be dissolved by pluvial precipitations and water condensed on the metal surface. This process, called metal runoff, contributes for zinc dispersion in soils and waters. In order to make accurate estimation of zinc runoff induced by atmosphere in humid tropical climate, samples of pure Zn and hot dip galvanized steel have been exposed in the Gulf of Mexico. The data reveal that this process is strongly influenced by factors which determine the aggressivity of the environment (pluvial precipitations, cycles of dry and rainy periods, atmospheric pollutants, air humidity). High annual rates of zinc runoff (6.5 -8.5 AE 0.30 g Zn m À2 yr À1 ) were released, being the runoff 63 -87% of the zinc corrosion rust. The zinc mass loss has been related to several independent parameters, presenting linear equation, which indicates the air contaminant SO 2 as the major factor controlling the runoff of zinc. The reported results show higher runoff of zinc samples, compared to that of hot dip galvanized steel

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Precipitation Runoff From Lead

Cited by 14 publications

References 0 publications

Zn and Pb emissions from roofing materials – modelling and mass balance attempt at the scale of a small urban catchment

Zn and Pb emissions from roofing materials – modelling and mass balance attempt at the scale of a small urban catchment

First stages of zinc <i>runoff</i> in humid tropical climate

Zinc corrosion runoff process induced by humid tropical climate

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