PMID- 22975917
OWN - NLM
STAT- MEDLINE
DCOM- 20130329
LR  - 20190827
IS  - 1348-2246 (Electronic)
IS  - 0910-6340 (Linking)
VI  - 28
IP  - 9
DP  - 2012
TI  - Amino-functionalized nano-size composite materials for dispersive solid-phase 
      extraction of phosphate in water samples.
PG  - 887-92
AB  - An efficient analytical method for the preconcentration and determination of 
      phosphate in water samples at trace levels was proposed. The method was based on 
      sample enrichment using dispersive solid-phase extraction (dSPE) with 
      tetraethylenepentamine (TEPA)-functionalized nano-size composite materials 
      (TEPA-NCMs) as sorbents, which were fully characterized. Various parameters 
      affecting the extraction efficiency were systematically investigated. After 
      extraction, the post-adsorbed TEPA-NCMs were eluted by a NaOH solution for 
      desorption of the phosphate. The resulting eluate containing phosphate was 
      determined by a spectrophotometric method. The limit of detection (LOD) and the 
      limit of quantification (LOQ) were 0.29 and 0.96 mug L(-1), respectively. The 
      relative standard deviations (RSDs) were lower than 8.0% with average recoveries 
      ranging from 91 to 118%. The present method was successfully applied to the 
      determination of phosphate at trace levels in real water samples, and it was 
      confirmed that the TEPA-NCMs are highly effective dSPE materials.
FAU - Zhang, Yun
AU  - Zhang Y
AD  - Ningbo Institute of Technology, Zhejiang University, PR China.
FAU - Pan, Shengdong
AU  - Pan S
FAU - Shen, Haoyu
AU  - Shen H
FAU - Hu, Meiqin
AU  - Hu M
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - Switzerland
TA  - Anal Sci
JT  - Analytical sciences : the international journal of the Japan Society for 
      Analytical Chemistry
JID - 8511078
RN  - 0 (Ethylenediamines)
RN  - 0 (Phosphates)
RN  - 0 (Solutions)
RN  - 059QF0KO0R (Water)
RN  - YZD1C9KQ28 (tetraethylenepentamine)
SB  - IM
MH  - Ethylenediamines/*chemistry
MH  - Nanostructures/*chemistry
MH  - Particle Size
MH  - Phosphates/*isolation & purification
MH  - *Solid Phase Extraction
MH  - Solutions
MH  - Water/*chemistry
EDAT- 2012/09/15 06:00
MHDA- 2013/03/30 06:00
CRDT- 2012/09/15 06:00
PHST- 2012/09/15 06:00 [entrez]
PHST- 2012/09/15 06:00 [pubmed]
PHST- 2013/03/30 06:00 [medline]
AID - DN/JST.JSTAGE/analsci/28.887 [pii]
AID - 10.2116/analsci.28.887 [doi]
PST - ppublish
SO  - Anal Sci. 2012;28(9):887-92. doi: 10.2116/analsci.28.887.