[19] H. Feng, X. Han, W. G. Zhang and L. Z. Yu, “A Preliminary Study of Heavy Metal Contamination in Yangtze River Intertidal Zone Due to Urbanization,” Marine Pollution Bulletin, Vol. 49, No. 11-12, 2004, pp. 910-915.doi:10.1016/j.marpolbul.2004.06.014