Yoo, Jong-Chan Kim, Eun-Jung Yang, Jung-Seok Baek, Kitae 2024-01-20T07:32:23Z 2024-01-20T07:32:23Z 2021-09-05 2015-03-04 0149-6395 https://pubs.kist.re.kr/handle/201004/125671 In this study, step-wise extraction using various extracting agents was carried out in order to enhance the removal of metals from contaminated dredged marine sediment. Five-times repeated extraction using HCl could extract approximately 23% of the As from the sediment, while NaOH extracted 14% of the As with a single extraction. An alternate application of EDTA and HCl extracted 17%, 34%, 9%, 87%, and 41% of the Cd, Cu, Ni, Pb, and Zn, respectively. Step-wise extraction reduced the risk index (RI) of heavy metals to 49% compared with untreated sediments, which were caused mainly from the decrease in the Cd concentration after chemical extraction in sediment. English TAYLOR & FRANCIS INC ECOLOGICAL RISK-ASSESSMENT SEQUENTIAL EXTRACTION CONTAMINATED SOIL HEAVY-METALS HARBOR SEDIMENTS REMEDIATION ACID EDTA ZN PB Step-Wise Extraction of Metals from Dredged Marine Sediments Article 10.1080/01496395.2014.956762 1 SEPARATION SCIENCE AND TECHNOLOGY, v.50, no.4, pp.536 - 544 SEPARATION SCIENCE AND TECHNOLOGY 50 4 536 544 scie scopus 000349544700008 2-s2.0-84924037427 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article ECOLOGICAL RISK-ASSESSMENT SEQUENTIAL EXTRACTION CONTAMINATED SOIL HEAVY-METALS HARBOR SEDIMENTS REMEDIATION ACID EDTA ZN PB metal fractionation risk assessment marine sediment step-wise metal extraction