liu.seSearch for publications in DiVA
Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Magnetic solid-phase extraction of trace-level mercury(II) ions using magnetic core-shell nanoparticles modified with thiourea-derived chelating agents
University of Science and Technology China, Peoples R China.
Huaibei Normal University, Peoples R China.
University of Science and Technology China, Peoples R China.
University of Science and Technology China, Peoples R China.
Vise andre og tillknytning
2015 (engelsk)Inngår i: Microchimica Acta, ISSN 0026-3672, E-ISSN 1436-5073, Vol. 182, nr 7-8, s. 1337-1344Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We describe a method for magnetic solid phase extraction of trace-levels of Hg(II) ions by using Fe3O4 nanoparticles (NPs) covered with a shell of silica and modified with the chelator N-(2-acetylaminoethyl)-N-(3-triethoxysilylpropyl)thiourea. The new magnetic NPs enable rapid magnetic separation, thus leading to higher efficiency and accuracy. The extracted Hg(II) ions on the NPs were directly quantified using a mercury analyzer. Possible interferents are widely eliminated in this highly selective extraction process, and the NPs are not exerting an interfering effect either. The method has an enrichment factor of 100, and extraction recoveries are between 95 and 107 % when using 10 mg of the extracting NPs. The method works over a wide range of pH values and can be applied to even complex natural samples. The effects of pH value, extraction time, sample volume and adsorbent amount on the extraction efficiency were optimized. Under the optimal conditions, the detection limit is as low as 17 ng L-1. The method was applied to the preconcentration and detection of Hg(II) in three natural water samples using the standard addition method.

sted, utgiver, år, opplag, sider
Springer Verlag (Germany) , 2015. Vol. 182, nr 7-8, s. 1337-1344
Emneord [en]
Magnetic SPE; Mercury; Direct mercury analyzer; Magnetic extractant; Chelating agent
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-118976DOI: 10.1007/s00604-015-1452-5ISI: 000354414300014OAI: oai:DiVA.org:liu-118976DiVA, id: diva2:818180
Merknad

Funding Agencies|Foundation of State Key Laboratory of Pollution Control and Resource Reuse, China [PCRRF13024]; Swedish Government Strategic Faculty Grant in Material Science (SFO, MATLIU) in Advanced Functional Materials (Faculty Grant SFO-Mat-LiU) [2009-00971]

Tilgjengelig fra: 2015-06-08 Laget: 2015-06-05 Sist oppdatert: 2017-12-04

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekst

Person

Hu, Zhang-Jun

Søk i DiVA

Av forfatter/redaktør
Hu, Zhang-Jun
Av organisasjonen
I samme tidsskrift
Microchimica Acta

Søk utenfor DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 200 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf