The Geochemistry of Heavy Metals in the Mudflat of Salinas de San Pedro Lagoon, California, USA

作     者：Mohammad Hassan Rezaie-Boroon Vanessa Toress Sonya Diaz Teresa Lazzaretto Mathew Tsang Dimitri D. Deheyn 

作者机构：California State University Geosciences and Environment Department Los Angeles USA University of California Scripps Institute of Oceanography La Jolla USA 

出 版 物：《Journal of Environmental Protection》 (环境保护（英文）)

年 卷 期：2013年第4卷第1期

页      面：12-25页

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 08[工学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

主　　题：Salinas De San Pedro Bioavailability Heavy Metal Geo-Accumulation Index Enrichment Factor Lagoon Water Pollution 

摘      要：Sediment core samples were collected from the Salinas de San Pedro to assess the pollutant deposition processes in response to extensive human activities. Analysis of the sediment samples for heavy metals and some trace elements was conducted with ICP-OES for 20 sites showing enrichment for some of trace and heavy metals. The results demonstrated that heavy metal concentrations in mud varied greatly for each metal, with concentration values (mg/g) ranging from 1.05 - 4.8 (Al);0.003 - 0.011(As);0.001 - 0.005 (Cd);0.02 to 0.82 (Cr);0.085 - 0.47 (Cu);5.98 - 14.22 (Fe);0.06 - 0.19 (Mn);0.03 - 0.67 (Ni);0.05 - 0.38 (Pb);- 0.069 (Se);0.18 - 0.63 (Ti);0.040 - 0.091 (V) and 0.149 - 0.336 (Zn). The Index of Geo-accumulation factor showed highest values for Pb, Mn, As, and Cu. Enrichment factors 1for these elements suggest anthropogenic inputs for most metals. The bioavailability of metals in lagoon sediments has the potential to be highly dynamic with local waste and natural H2S discharge from existing fault line.