Document Detail


Elemental concentrations in different species of seaweeds from Loreto Bay, Baja California Sur, Mexico: implications for the geochemical control of metals in algal tissue.
MedLine Citation:
PMID:  11504337     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Concentration levels of 21 elements were analyzed by instrumental neutron activation analysis (Rb, Cs, Ca, Sr, Ba, Sc, Cr, Fe, Co, Ni, Zn, Se, As, Sb, Th, U, Br, Hf, Ta, Zr, and Ag) in seven different seaweed species (Codium cuneatum, Sargassum sinicola, Padina durvillaei, Laurencia johnstonii, L. papillosa, Gracilaria pachidermatica and Hypnea pannosa), collected in a shallow coastal zone from Bahia de Loreto, Baja California Sur, Mexico. Measured concentrations in algal tissue spanned almost eight orders of magnitude (from 2.0 x 10(-3) microg g(-1) for Hf to 1.2 x 10(5) microg g(-1) for Ca). Ca was consistently the most abundant element in all analyzed seaweeds, followed by Fe and Sr. Brown algae showed a tendency to incorporate higher concentrations of elements than red and green algae. Additionally, there were significant linear correlations (P < 0.05 to P < 0.001) between a total of 76 different pairs of elements, some of them (e.g. Rb-Ni, Rb-Ag, Sc Cr, Sc-Fe, Sc Ni, Sc Hf, Cr Fe, Fe Ni, Fe-Hf and Ni-Th) highly correlated (r2 > 0.900). A significant correlation (r2 = 0.701, n = 18, P < 0.001) exists between our measurements in the tissue of algae and their corresponding average elemental concentrations in oceanic water from the North Pacific Ocean. Hence, overall elemental abundance in algal tissue apparently is controlled by the elemental abundance in oceanic water, whereas metabolic processes as well as environmental factors relevant to each region modify the final concentration of a given element in the body of a macroalgae.
Authors:
I Sánchez-Rodríguez; M A Huerta-Diaz; E Choumiline; O Holguín-Quiñones; J A Zertuche-González
Related Documents :
24135087 - Diurnal postprandial responses to low and high glycaemic index mixed meals.
7421677 - Trace elements in nutrition.
8739357 - The effect of zn on the digestive gland epithelium of porcellio scaber (isopoda, crusta...
6629787 - 1976 hanford americium exposure incident: urinary excretion of trace metals during dtpa...
20956317 - Thirty thousand-year-old evidence of plant food processing.
18510797 - No association of defined variability in leptin, leptin receptor, adiponectin, proopiom...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Environmental pollution (Barking, Essex : 1987)     Volume:  114     ISSN:  0269-7491     ISO Abbreviation:  Environ. Pollut.     Publication Date:  2001  
Date Detail:
Created Date:  2001-08-15     Completed Date:  2001-12-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8804476     Medline TA:  Environ Pollut     Country:  England    
Other Details:
Languages:  eng     Pagination:  145-60     Citation Subset:  IM    
Affiliation:
Centro Interdisciplinario de Ciencias Marinas, CICIM AR-IPN, La Paz, BCS, Mexico.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Algae / chemistry*,  metabolism
Environmental Monitoring
Metals, Heavy / analysis*,  pharmacokinetics
Water Pollutants, Chemical / analysis*,  pharmacokinetics
Chemical
Reg. No./Substance:
0/Metals, Heavy; 0/Water Pollutants, Chemical

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Update on HIV patient management: latest trends in laboratory testing, immune cell reconstitution, a...
Next Document:  Flue gas desulfurization by-products additions to acid soil: alfalfa productivity and environmental ...