| Title |
Spatial distribution, bioavailability, and toxicity of metals in surface sediments of tropical reservoirs, Brazil
|
|---|---|
| Published in |
Environmental Monitoring and Assessment, March 2018
|
| DOI | 10.1007/s10661-018-6515-8 |
| Pubmed ID | |
| Authors |
Daniele Frascareli, Sheila Cardoso-Silva, Juliana de Oliveira Soares-Silva Mizael, André Henrique Rosa, Marcelo Luiz Martins Pompêo, Julio Cesar López-Doval, Viviane Moschini-Carlos |
| Abstract |
Depending on the environmental conditions, surface sediments can retain all the contaminants present and provide a record of the anthropic activities affecting the aquatic environment. In order to analyze the impacts on reservoirs, surface sediments were collected in three characteristic regions (riverine, transitional, and limnetic zones) of seven reservoirs in São Paulo State, Brazil. Analyses were made of grain size, organic matter (OM), total phosphorus (TP), and total nitrogen (TN). Inductively coupled plasma-atomic emission spectroscopy (ICP-AES) was used to determine pseudo-total and bioavailable metals (Cu, Cd, Cr, Ni, Pb, Zn, Mn, Fe, and Al). A Horiba probe was used to measure dissolved oxygen (DO), pH, redox potential (ORP), and temperature (Temp) in the bottom water. The data were analyzed using multivariate statistics. Enrichment factors (EF), pollution load index values (PLI), and background values (BG) were also determined in order to evaluate the potential toxicity. Intra-reservoir and inter-reservoir spatial heterogeneity (p < 0.05) were observed using two-way analysis of similarities. Principal component analysis indicated greater influence of metals in the Barra Bonita, Salto Grande, and Rio Grande reservoirs, corroborating the PLI, EF, and BG data. Bioavailable Cu was found in the Rio Grande reservoir, possibly associated with copper sulfate used to control algal blooms, while bioavailable Ni in the Barra Bonita reservoir was attributed to the presence of industrial wastes and natural geology. The bottom water conditions indicated that the metals remained in insoluble forms. |
X Demographics
The data shown below were collected from the profiles of 3 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Brazil | 1 | 33% |
| Unknown | 2 | 67% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 3 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 52 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 52 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 10 | 19% |
| Student > Bachelor | 6 | 12% |
| Student > Master | 5 | 10% |
| Other | 3 | 6% |
| Student > Doctoral Student | 2 | 4% |
| Other | 5 | 10% |
| Unknown | 21 | 40% |
| Readers by discipline | Count | As % |
|---|---|---|
| Environmental Science | 10 | 19% |
| Agricultural and Biological Sciences | 7 | 13% |
| Chemistry | 3 | 6% |
| Engineering | 3 | 6% |
| Biochemistry, Genetics and Molecular Biology | 2 | 4% |
| Other | 7 | 13% |
| Unknown | 20 | 38% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 12 March 2018.
All research outputs
#13,630,070
of 23,854,458 outputs
Outputs from Environmental Monitoring and Assessment
#1,097
of 2,748 outputs
Outputs of similar age
#164,957
of 335,588 outputs
Outputs of similar age from Environmental Monitoring and Assessment
#14
of 55 outputs
Altmetric has tracked 23,854,458 research outputs across all sources so far. This one is in the 42nd percentile – i.e., 42% of other outputs scored the same or lower than it.
So far Altmetric has tracked 2,748 research outputs from this source. They receive a mean Attention Score of 3.8. This one has gotten more attention than average, scoring higher than 59% of its peers.
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We're also able to compare this research output to 55 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 72% of its contemporaries.