However, factors like pollution and past practices including automotive lead emissions, residue from lead paint, and pesticides that contained lead arsenate
, may increase the levels within the soil.
Historical use of lead arsenate
insecticides, resulting soil contamination, and implications for soil remediation.
Because of this, pesticides that contained lead arsenate
were banned in most developed countries during the 1980s (Peryea 1998) and have since been replaced with herbicides containing the less toxic form monosodium methyl arsenate (World Health Organisation (WHO) 2005).
Plumbing and insect control (as lead arsenate
in apple orchards) are a couple of common examples of lead application.
They cover linear and non-linear optical phenomena, luminescence and time-resolved emission spectra of Nd3+ and Er3+: silver zinc borate glasses, spectral features of lead arsenate
glasses doped with copper oxide, dielectric studies on alkali borate glasses mixed with iron oxide, a case study of treating a large cystic lesion in the anterior maxilla using glass reinforced hydroxyapatite, and guided bone regeneration using glass-reinforced hydroxyapatite and collagen membrane in treating peri-implantitis.
Dow, The Dow Chemical Company entered the agricultural market in 1910, offering lime sulfur (calcium sulfide) and lead arsenate
sprays to farm chemical businesses.
According to WHO, pigmentation or keratosis, both cutaneous lesions are necessary to diagnose arsenism.14 In another study, it was found that arsenic toxicity might increase the risk of visceral malignancy among metal workers.7 Cases of occupational origin are most commonly caused by metal arsenic trioxide used as insecticide, copper acetoarsenite, lead arsenate
, and calcium arsenate used as insecticides or copper arsenite used as a pigment in wallpapers and paints manufacturing.
3-man wooden showers, 4-seater latrines with dizzy flies that drop dead over lead arsenate
bait, burning-out crappers, one wringer washing machine for 140 troops ...
They're still finding canisters of DDT (which was banned in 1972) and lead arsenate
(which fell out of favor when DDT came on the scene in 1948) dating back more than 50 years.
Only "ever use" data were available for arsenical pesticides (lead arsenate
and inorganic and organic arsenic as defined on the questionnaire).
Phosphate-enhanced movement of arsenic out of lead arsenate
contaminated topsoil and through uncontaminated subsoil.