Square-wave anodic-stripping voltammetric determination of Cd, Pb and Cu in a hydrofluoric acid solution of siliceous spicules of marine sponges (from the Ligurian Sea, Italy, and the Ross Sea, Antarctica).
Square-wave anodic-stripping voltammetry (SWASV) was set up and optimized for simultaneous determination of cadmium, lead, and copper in siliceous spicules of marine sponges, directly in the hydrofluoric acid solution (~0.55 mol L−1 HF, pH ~1.9). A thin mercury-film electrode (TMFE) plated on to an...
Published in: | Analytical and Bioanalytical Chemistry |
---|---|
Main Authors: | , , , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2008
|
Subjects: | |
Online Access: | http://hdl.handle.net/11566/28368 https://doi.org/10.1007/s00216-008-2239-x |
id |
ftupmarcheiris:oai:iris.univpm.it:11566/28368 |
---|---|
record_format |
openpolar |
spelling |
ftupmarcheiris:oai:iris.univpm.it:11566/28368 2024-04-14T08:03:52+00:00 Square-wave anodic-stripping voltammetric determination of Cd, Pb and Cu in a hydrofluoric acid solution of siliceous spicules of marine sponges (from the Ligurian Sea, Italy, and the Ross Sea, Antarctica). TRUZZI, Cristina ANNIBALDI, Anna ILLUMINATI, Silvia SCARPONI, Giuseppe E. BASSOTTI Truzzi, Cristina Annibaldi, Anna Illuminati, Silvia E., Bassotti Scarponi, Giuseppe 2008 http://hdl.handle.net/11566/28368 https://doi.org/10.1007/s00216-008-2239-x eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000258554300030 volume:392 firstpage:247 lastpage:262 journal:ANALYTICAL AND BIOANALYTICAL CHEMISTRY http://hdl.handle.net/11566/28368 doi:10.1007/s00216-008-2239-x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-52449093270 info:eu-repo/semantics/article 2008 ftupmarcheiris https://doi.org/10.1007/s00216-008-2239-x 2024-03-21T18:10:09Z Square-wave anodic-stripping voltammetry (SWASV) was set up and optimized for simultaneous determination of cadmium, lead, and copper in siliceous spicules of marine sponges, directly in the hydrofluoric acid solution (~0.55 mol L−1 HF, pH ~1.9). A thin mercury-film electrode (TMFE) plated on to an HF-resistant epoxy-impregnated graphite rotating-disc support was used. The optimum experimental conditions, evaluated also in terms of the signal-to-noise ratio, were as follows: deposition potential −1100 mV vs. Ag/AgCl, KCl 3 mol L−1, deposition time 3–10 min, electrode rotation 3000 rpm, SW scan from −1100 mV to +100 mV, SW pulse amplitude 25 mV, frequency 100 Hz, ΔEstep 8 mV, tstep 100 ms, twait 60 ms, tdelay 2 ms, tmeas 3 ms. Under these conditions the metal peak potentials were Cd −654±1 mV, Pb −458±1 mV, Cu −198±1 mV. The electrochemical behaviour was reversible for Pb, quasi-reversible for Cd, and kinetically controlled (possibly following chemical reaction) for Cu. The linearity of the response with concentration was verified up to ~4 μg L−1 for Cd and Pb and ~20 μg L−1 for Cu. The detection limits were 5.8 ng L−1, 3.6 ng L−1, and 4.3 ng L−1 for Cd, Pb, and Cu, respectively, with td=5 min. The method was applied for determination of the metals in spicules of two specimens of marine sponges (Demosponges) from the Portofino natural reserve (Ligurian Sea, Italy, Petrosia ficiformis) and Terra Nova Bay (Ross Sea, Antarctica, Sphaerotylus antarcticus). The metal contents varied from tens of ng g−1 to ~1 μg g−1, depending on the metal considered and with significant differences between the two sponge species. Article in Journal/Newspaper Antarc* Antarctica antarcticus Ross Sea Università Politecnica delle Marche: IRIS Ross Sea Terra Nova Bay Analytical and Bioanalytical Chemistry 392 1-2 247 262 |
institution |
Open Polar |
collection |
Università Politecnica delle Marche: IRIS |
op_collection_id |
ftupmarcheiris |
language |
English |
description |
Square-wave anodic-stripping voltammetry (SWASV) was set up and optimized for simultaneous determination of cadmium, lead, and copper in siliceous spicules of marine sponges, directly in the hydrofluoric acid solution (~0.55 mol L−1 HF, pH ~1.9). A thin mercury-film electrode (TMFE) plated on to an HF-resistant epoxy-impregnated graphite rotating-disc support was used. The optimum experimental conditions, evaluated also in terms of the signal-to-noise ratio, were as follows: deposition potential −1100 mV vs. Ag/AgCl, KCl 3 mol L−1, deposition time 3–10 min, electrode rotation 3000 rpm, SW scan from −1100 mV to +100 mV, SW pulse amplitude 25 mV, frequency 100 Hz, ΔEstep 8 mV, tstep 100 ms, twait 60 ms, tdelay 2 ms, tmeas 3 ms. Under these conditions the metal peak potentials were Cd −654±1 mV, Pb −458±1 mV, Cu −198±1 mV. The electrochemical behaviour was reversible for Pb, quasi-reversible for Cd, and kinetically controlled (possibly following chemical reaction) for Cu. The linearity of the response with concentration was verified up to ~4 μg L−1 for Cd and Pb and ~20 μg L−1 for Cu. The detection limits were 5.8 ng L−1, 3.6 ng L−1, and 4.3 ng L−1 for Cd, Pb, and Cu, respectively, with td=5 min. The method was applied for determination of the metals in spicules of two specimens of marine sponges (Demosponges) from the Portofino natural reserve (Ligurian Sea, Italy, Petrosia ficiformis) and Terra Nova Bay (Ross Sea, Antarctica, Sphaerotylus antarcticus). The metal contents varied from tens of ng g−1 to ~1 μg g−1, depending on the metal considered and with significant differences between the two sponge species. |
author2 |
Truzzi, Cristina Annibaldi, Anna Illuminati, Silvia E., Bassotti Scarponi, Giuseppe |
format |
Article in Journal/Newspaper |
author |
TRUZZI, Cristina ANNIBALDI, Anna ILLUMINATI, Silvia SCARPONI, Giuseppe E. BASSOTTI |
spellingShingle |
TRUZZI, Cristina ANNIBALDI, Anna ILLUMINATI, Silvia SCARPONI, Giuseppe E. BASSOTTI Square-wave anodic-stripping voltammetric determination of Cd, Pb and Cu in a hydrofluoric acid solution of siliceous spicules of marine sponges (from the Ligurian Sea, Italy, and the Ross Sea, Antarctica). |
author_facet |
TRUZZI, Cristina ANNIBALDI, Anna ILLUMINATI, Silvia SCARPONI, Giuseppe E. BASSOTTI |
author_sort |
TRUZZI, Cristina |
title |
Square-wave anodic-stripping voltammetric determination of Cd, Pb and Cu in a hydrofluoric acid solution of siliceous spicules of marine sponges (from the Ligurian Sea, Italy, and the Ross Sea, Antarctica). |
title_short |
Square-wave anodic-stripping voltammetric determination of Cd, Pb and Cu in a hydrofluoric acid solution of siliceous spicules of marine sponges (from the Ligurian Sea, Italy, and the Ross Sea, Antarctica). |
title_full |
Square-wave anodic-stripping voltammetric determination of Cd, Pb and Cu in a hydrofluoric acid solution of siliceous spicules of marine sponges (from the Ligurian Sea, Italy, and the Ross Sea, Antarctica). |
title_fullStr |
Square-wave anodic-stripping voltammetric determination of Cd, Pb and Cu in a hydrofluoric acid solution of siliceous spicules of marine sponges (from the Ligurian Sea, Italy, and the Ross Sea, Antarctica). |
title_full_unstemmed |
Square-wave anodic-stripping voltammetric determination of Cd, Pb and Cu in a hydrofluoric acid solution of siliceous spicules of marine sponges (from the Ligurian Sea, Italy, and the Ross Sea, Antarctica). |
title_sort |
square-wave anodic-stripping voltammetric determination of cd, pb and cu in a hydrofluoric acid solution of siliceous spicules of marine sponges (from the ligurian sea, italy, and the ross sea, antarctica). |
publishDate |
2008 |
url |
http://hdl.handle.net/11566/28368 https://doi.org/10.1007/s00216-008-2239-x |
geographic |
Ross Sea Terra Nova Bay |
geographic_facet |
Ross Sea Terra Nova Bay |
genre |
Antarc* Antarctica antarcticus Ross Sea |
genre_facet |
Antarc* Antarctica antarcticus Ross Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000258554300030 volume:392 firstpage:247 lastpage:262 journal:ANALYTICAL AND BIOANALYTICAL CHEMISTRY http://hdl.handle.net/11566/28368 doi:10.1007/s00216-008-2239-x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-52449093270 |
op_doi |
https://doi.org/10.1007/s00216-008-2239-x |
container_title |
Analytical and Bioanalytical Chemistry |
container_volume |
392 |
container_issue |
1-2 |
container_start_page |
247 |
op_container_end_page |
262 |
_version_ |
1796300171998396416 |