lead arsenate


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lead arsenate

[′led ′ärs·ən‚āt]
(inorganic chemistry)
Pb3(AsO4)2 Poisonous, water-insoluble white crystals; soluble in nitric acid; used as an insecticide.
References in periodicals archive ?
Before they were playgrounds, many of those schoolyards were orchards and Redfield-Wilder said the lead arsenate once used for pesticides are especially harmful to children--which is why they have since been cleaned.
Interactions of lead arsenate and specific pesticides on risk of cutaneous melanoma among pesticide applicators completing the take -home questionnaire in the Agricultural Health Study.
We observed a significant effect modification when benomyl and maneb/mancozeb users were also exposed to lead arsenate.
Sediment cores collected from the open water area of Sky Lake contained elevated Pb and As concentrations in layers deposited in the 1920s when lead arsenate pesticide was widely used on cotton fields.
The slight offset in time between the Pb and As peaks may be due to differences in post-depositional mobility of Pb and As or variable usage of calcium and lead arsenates.
Our study seeks to complement these existing studies by analyzing both arsenic and lead (to assess impact of arsenic-based pesticide as well as lead arsenate in particular) and doing so using U.
2003) reported on elevated levels of arsenic in and around homes constructed on or near fruit orchards in agricultural communities with historical use of lead arsenate.
In the 1950s, when lead arsenate pesticides were used heavily on tobacco farms, arsenic concentrations were recorded as high as 1.
These toxic by-products are left from the days before DDT and before organophosphates, when arsenical pesticides, particularly lead arsenate (LA), were the treatment of choice to prevent the ravages of insect damage.
More recent mining of the oxide zones at the Girilambone, New Cobar and Elura (Endeavor) deposits has exposed a rich diversity of secondary minerals including copper carbonates and phosphates, copper and lead arsenates, and silver minerals.