liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Optimization of ethylenediamine-grafted multiwalled carbon nanotubes for solid-phase extraction of lead cations
Tongji University, Shanghai, China .
Tongji University, Shanghai, China .
Tongji University, Shanghai, China .
Tongji University, Shanghai, China .
Show others and affiliations
2012 (English)In: Environmental science and pollution research international, ISSN 0944-1344, E-ISSN 1614-7499, Vol. 19, no 4, 1237-1244 p.Article in journal (Refereed) Published
Abstract [en]

Introduction

Ethylenediamine-grafted multiwalled carbon nanotubes (MWCNTs-EDA-I and MWCNTs-EDA-II) are optimized and employed to investigate the preconcentration of lead ions (Pb(II)) in trace level.

Results

The results show that Pb(II) can be adsorbed quantitatively on the optimized MWCNTs in the range of pH 4–7 and MWCNTs-EDA-I has a higher maximum Pb(II) adsorption capacity (157.19 mg/g) than MWCNTs-EDA-II (89.16 mg/g). The adsorbed Pb(II) can be eluted completely using 5 mL of 1 mol/L HNO3.

Discussion

A new approach using a microcolumn packed with the obtained MWCNTs-EDA-I has been developed for the preconcentration of trace amount of Pb(II). Parameters influencing the preconcentration of Pb(II), such as pH of the sample, sample volume, elution solution, and interfering ions, have been examined and optimized in detail. Under optimum experimental conditions, the limit of detection is 0.30 ng/mL with the enrichment factor of 60. The relative standard deviation (R.S.D) was 2.6% at the 20 ng/mL Pb(II) level.

Conclusion

The method has been applied for the preconcentration of trace amount of Pb(II) in environmental water samples with satisfying results.

Place, publisher, year, edition, pages
Springer, 2012. Vol. 19, no 4, 1237-1244 p.
Keyword [en]
Carbon nanotubes, SPE, Preconcentration, Heavy metals, Lead cation
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:liu:diva-90642DOI: 10.1007/s11356-011-0651-9PubMedID: 22057851OAI: oai:DiVA.org:liu-90642DiVA: diva2:614002
Available from: 2013-04-03 Created: 2013-04-03 Last updated: 2017-12-06

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Authority records BETA

Hu, Zhang-Jun

Search in DiVA

By author/editor
Hu, Zhang-Jun
In the same journal
Environmental science and pollution research international
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 104 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf