Competitive Absorption of Cadmium, Zinc, and Lead by Velvet Bean (Stizolobium Aterrimum) and Metal Distribution among Soil Fractions

Autor:	Ana Cristiane Queiroz Santos, Nielson Machado dos Santos, Évio Eduardo Chaves de Melo, Adriana Maria de Aguiar Accioly, Clístenes Williams Araújo do Nascimento, Bruno Toribio Xavier
Rok vydání:	2014
Předmět:	Absorption (pharmacology) Cadmium Chemistry media_common.quotation_subject Soil Science chemistry.chemical_element Biomass Fractionation Zinc Competition (biology) Metal Phytoremediation visual_art Environmental chemistry Botany visual_art.visual_art_medium Agronomy and Crop Science media_common
Zdroj:	Communications in Soil Science and Plant Analysis. 45:1499-1510
ISSN:	1532-2416 0010-3624
Popis:	The aim of this study was to evaluate the interactions among cadmium (Cd), zinc (Zn), and lead (Pb) regarding their distributions among soil fractions and absorption by velvet bean. Solutions containing 20, 150, and 150 mg kg−1 of Cd, Zn and Pb, all together, combined 2 by 2, or alone, were added to the soil. Plants were grown for 35 days. Biomass and metal contents in plants and soil fractions were measured. The results showed that Zn was the most phytotoxic metal. Competition among Cd, Zn, and Pb influenced their distribution into soil fractions; Pb prevailed on the organic-matter fraction, Zn on the water-soluble fraction, and Cd on the water-soluble and organic-matter fractions. Competition between Cd and Zn influenced the absorption and translocation of Zn. Soil Pb had no influence on the distribution of Pb in plant aboveground parts but increased its concentration in the root and favored Zn translocation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9994f6625aabb499b250e99930bf1bd4 https://doi.org/10.1080/00103624.2014.904333 Zobrazit plný text záznamu