Residential arsenic and lead levels in an agricultural community with a history of lead arsenate use

Lead, arsenic, and polycyclic aromatic hydrocarbons in soil and house dust in the communities surrounding the Sydney, Nova Scotia, tar ponds.

“…Our results are consistent with the findings that indoor dust lead loading can be accounted for largely by outside sources, particularly in summer (Adgate et al 1998;Yiin et al 2000). Further, arsenic does not appear to be present in paint above detection limits using X-ray fluorescence analysis and through indirect evaluation of dust and soil and therefore originates outside (Adgate et al 1998;Black 1997;Burger and Gochfeld 2000;Wolz et al 2003).…”

Environmental Impact and Remediation of Residual Lead and Arsenic Pesticides in Soil

“…Lead toxicity in humans also affects red blood cells and their stem cells, the kidney, heme biosynthesis, vitamin D metabolism, and the neurobehavioral development of newborns, infants, and children (Carrington & Bolger 1992;Dudka & Miller 1999;Needlemann et al, 1990;Wolz et al, 2003). It has been suggested that blood Pb levels should be no higher than 6 µg dl -1 in children to avoid neurological symptoms and no higher than 25 µg dl -1 in adults to prevent hypertensive symptoms.…”

“…Although arsenic is readily absorbed by humans, 40 to 70 percent of As intake is absorbed, metabolized, and excreted within 48 hours. The minimal risk level (MRL) for chronic oral ingestion of arsenic has been estimated to be 0.3 μg arsenic kg -1 day -1 (ATSDR, 1998;Wolz et al, 2003). Arsenate (V) and arsenite (III) are the dominant inorganic species of arsenic in soils (Chaturvedi, 2006).…”

“…Moreover, the fact that lead arsenate has multiple sites of action made it unlikely that insect resistance could be achieved with single mutations (Georghiou, 1983). Lead arsenate was used as an insecticide until the introduction of the organochlorine dichlorodiphenyltrichloroethane (DDT) in the 1940s (Peryea 1998a;Wolz et al, 2003). However, lead arsenate continued to be used in some locations into the 1970s and was not officially banned until 1988 (Focus, 2006).…”

Metais-traço em sedimentos do reservatório Paiva Castro (Mairiporã- São Paulo): histórico por meio da geocronologia do 210Pb, biodisponibilidade e uma proposta para a gestão dos recursos hídricos

“…O arseniato de chumbo é um agrotóxico que apresentou maiores aplicações até meados da década de 50 e foi bastante utilizado na cultura de uva (WOLZ et al, 2003). A região da bacia do Juquery até período anterior à construção da represa Paiva Castro apresentava como subsistência o cultivo de uva, e a possibilidade do uso do arseniato de chumbo como defensivo agrícola poderia ter colaborado com os altos teores registrados para este elemento.…”