https://www.selleckchem.com/pr....oducts/Rapamycin.htm
Urban construction is a major contributor to air pollution, but few studies have examined heavy metal pollution in urban areas caused by construction dust fall. We measured the concentrations of Cr, Ni, Cu, Zn, Pb, Cd, and Hg and particle size distribution in dust fall from various construction activities in seven fast-developing cities in China and conducted a health risk assessment. Mean metal concentrations in construction dust fall were on the order of Zn (246.3 mg/kg) Cr (94.2 mg/kg) Pb (56.5 mg/kg) Cu (53.6 mg/kg)