5Swaileh K M, Hussein R M, Abu-Elhaj S. Assessment of heavy metal contamination in roadside surface soil and vegetation from the West Bank. Environmental Contamination and Toxicology, 2004,47(8):23-30.
6Viard B, Pihan F, Promeyrat S, et al. Integrated assessment of heavy metal (Pb,Zn,Cd) highway pollution: Bioaccumulation in soil, Graminaceae and land snails. Chemosphere,2004,55(10):1349-1359.
7Munch D. Concentration profiles of arsenic, cadmium, chromium, copper, lead, mercury, nickel, zinc, vanadium and polynuclear aromatic hydrocarbons (PAH) in forest soil beside an urban road. The Science of the Total Envi-ronment, 1993,138(1-3):47-55.
8Legret M, Pagotto C. Evaluation of pollutant loadings in the runoff waters from a major rural highway. The Science of the Total Environment,1999,235(1-3):143-150.
9Qasem M J, Momani K A. Contamination of roadside soil, plants, and air with heavy metals in Jordan:A compar- ative study. Turkish Journal of Chemistry, 1999,23:209-220.
10Nicholas Hewitt C, Rashed M B. An integrated budget for selected pollutants for a major rural highway. The Sci- ence of the Total Environment, 1990, 93: 375-384.
