WANG Mingshi, CAO Jingli，LI Han，GUI Chenlu，SONG Dangyu

(Institute of Resource and Environment, Henan Polytechnic University，Jiaozuo 454003，China)

 

Abstract: Heavy metal concentrations in the dust fall of Jiaozuo City, China, were determined for distribution characteristics and health risk assessment. Results show that the content ranges of heavy metals Cr, Co, Ni, Cu, As, Cd, Pb and Zn are 14.18~136.97, 3.40~13.98, 15.57~63.28, 15.05~150.00, 19.86~71.49, 1.23~22.36, 105.52~213.18 and 487.00~2180.00 mg/kg, respectively. Heavy metal pollution levels of dust are relatively high, and higher than those in soil to varying degrees. Besides, the non-carcinogenic risks of metals are in the order as Zn>Pb>Cr>Cu>Ni>As>Co>Cd. In Particular, the non-carcinogenic risks of Zn and Pb for children are high, which requiring more attention. Non carcinogenic risk of children is higher than adult. Carcinogenic risks for children and adults are in the order of Cr>As>Co>Cd>Ni, with the carcinogenic risk lower than 10-6~10-4, so there is no risk of cancer by heavy metals in the study dust fall.

 

Key words: dust fall; heavymetal; distribution characteristics; health risk assessment

 

EARTH AND ENVIRONMENT Vol.46, No.1, Tot No.321, 2018, Page 59-65