title: Assessment of Pb and Cd in seed oils and meals and methodology of their extraction.
abstract: Oil seed, which is a secondary product in phytoremediation, contaminated with heavy metals should be disposed of in an appropriate fashion. In this study, heavy metal concentrations found in oilseed rape and peanut oils were below 0.1 mg kg(-1) after extractions, being found most of the heavy metals in meals rather in oils. Extraction experiments were carried out to determine the optimum methodology for the removal of Pb and Cd from seed meals using K3C6H5O7, K2C4H4O6 and (NH4)2EDTA. The highest extraction of the Pb and Cd in the seed meals was achieved using 30 mM extractant solutions at 30°C for 24 h and a three-step extraction procedure. K3C6H5O7 and K2C4H4O6 had less impact on the removal of nutrients than (NH4)2EDTA.
authors.affiliation: College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Yang
authors.affiliation: College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
authors.forename: Hongliang
authors.initials: H
authors.lastname: Li
authors.affiliation: College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China. Electronic address: pengliang2004@126.com.
authors.forename: Liang
authors.initials: L
authors.lastname: Peng
authors.affiliation: College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
authors.forename: Zhipeng
authors.initials: Z
authors.lastname: Chen
authors.affiliation: College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China; College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China. Electronic address: qrzeng@163.com.
authors.forename: Qingru
authors.initials: Q
authors.lastname: Zeng
mesh_terms: D029688:Brassica napus / Q000737:chemistry*; D002104:Cadmium / Q000032:analysis* / Q000302:isolation & purification; D005506:Food Contamination / Q000032:analysis*; D007854:Lead / Q000032:analysis* / Q000302:isolation & purification; D010938:Plant Oils / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*
chemical_list: D010938:Plant Oils; D002104:Cadmium; D007854:Lead
keywords: Detoxification; Extracting; Heavy metal; Seed meals; Seed oil extraction