Journal of Environmental Biology
pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP
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Abstract - Issue Mar 2009, 30 (3) Back
Accumulation of chromium and interaction with other elements in Chlorella vulgaris (Cloroficeae) and Daphnia magna (Crustacea, Cladocera)
L. Regaldo1, A.M. Gagneten*1 and H. Troiani2
1Departamento de Ciencias Naturales, Facultad de Humanidades y Ciencias, Ciudad Universitaria, Universidad Nacional del Litoral, 3000, Santa Fe, Argentina
2Centro At?mico Bariloche,
Avenida, Bustillo Km 9.5, 8
400 S.C. de Bariloche,
(Received: September 14, 2007; Revised received: January 28, 2008; Accepted: February 10, 2008)
Abstract: Assays with Chlorella vulgaris Beijerinck Novakova, 1890 and Daphnia magna Straus, 1820 were performed to determine Cr and other elements concentration in tissues of both species by instrumental neutron activation analysis (INAA), after being exposed to 150, 280 and 350 ?g l-1Cr (VI). Interaction among Cu, Zn, Fe and Cr were also registered. In the control of C. vulgaris, the amount of Cr was < 4mg g-1; in the treatments with Cr (VI) the values were 47, 82 and 100 folds greater than the control for the lowest, intermediate and highest concentrations tested respectively. In the control of D. magna, the amount of Cr was <3 mg g-1; in the treatments with Cr (VI) the values were 14, 13 and 27 folds higher than the control for the lower, intermediate and higher Cr (VI) concentrations respectively, and from 3 to 9 times less than for C. vulgaris These results show that C. vulgaris is very efficient accumulator of Cr (VI) from polluted waters, and in consequence, it is proposed to be used in phytoremediation procedures.
Key words: Chromium, Bioconcentration, Oligoelements, Chlorella vulgaris, Daphnia magna, INAA
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