PMID- 19203614
OWN - NLM
STAT- MEDLINE
DCOM- 20090413
LR  - 20191210
IS  - 1873-3573 (Electronic)
IS  - 0039-9140 (Linking)
VI  - 78
IP  - 2
DP  - 2009 Apr 30
TI  - Chitosan modified ordered mesoporous silica as micro-column packing materials for 
      on-line flow injection-inductively coupled plasma optical emission spectrometry 
      determination of trace heavy metals in environmental water samples.
PG  - 491-7
LID - 10.1016/j.talanta.2008.11.046 [doi]
AB  - A novel adsorbent of chitosan chemically modified ordered mesoporous silica was 
      synthesized and employed as a solid phase extraction (SPE) material for flow 
      injection (FI) micro-column preconcentration on-line coupled with inductively 
      coupled plasma optical emission spectrometry (ICP-OES) determination of trace 
      heavy metals V, Cu, Pb, Cd and Hg in environmental water samples. The factors 
      affecting separation and preconcentration of target heavy metals such as pH, 
      sample flow rate and volume, eluent concentration and volume, interfering ions 
      were investigated. Under the optimized experimental conditions, an enrichment 
      factor of 20 and sampling frequency of 10h(-1) were obtained. The detection 
      limits of the method for V, Cu, Pb, Cd and Hg were 0.33, 0.30, 0.96, 0.05 and 
      0.93 ng mL(-1), and the relative standard deviations (RSDs) were 2.8%, 6.7%, 
      1.8%, 4.0% and 5.3% (n=7, C=10 ng mL(-1)), respectively. The adsorption 
      capacities of chitosan modified ordered mesoporous silica for V, Cu, Pb, Cd, and 
      Hg were found to be 16.3, 21.7, 22.9, 12.2 and 13.5 mg g(-1), respectively. In 
      order to validate the developed method, a certified reference material of 
      GSBZ50009-88 environmental water sample was analyzed and the determined values 
      were in good agreement with the certified values. The proposed method has also 
      been applied to the determination of trace heavy metals in natural water samples 
      with satisfactory results.
FAU - Chen, Dahui
AU  - Chen D
AD  - Department of Chemistry, Wuhan University, Wuhan 430072, China.
FAU - Hu, Bin
AU  - Hu B
FAU - Huang, Chaozhang
AU  - Huang C
LA  - eng
PT  - Evaluation Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20081206
PL  - Netherlands
TA  - Talanta
JT  - Talanta
JID - 2984816R
RN  - 0 (Metals, Heavy)
RN  - 0 (Water Pollutants, Chemical)
RN  - 7631-86-9 (Silicon Dioxide)
RN  - 9012-76-4 (Chitosan)
SB  - IM
MH  - Adsorption
MH  - *Chitosan
MH  - Metals, Heavy/*analysis
MH  - *Silicon Dioxide
MH  - Spectrum Analysis/*methods
MH  - Water Pollutants, Chemical/*analysis
EDAT- 2009/02/11 09:00
MHDA- 2009/04/14 09:00
CRDT- 2009/02/11 09:00
PHST- 2008/07/08 00:00 [received]
PHST- 2008/11/28 00:00 [revised]
PHST- 2008/11/29 00:00 [accepted]
PHST- 2009/02/11 09:00 [entrez]
PHST- 2009/02/11 09:00 [pubmed]
PHST- 2009/04/14 09:00 [medline]
AID - S0039-9140(08)00867-9 [pii]
AID - 10.1016/j.talanta.2008.11.046 [doi]
PST - ppublish
SO  - Talanta. 2009 Apr 30;78(2):491-7. doi: 10.1016/j.talanta.2008.11.046. Epub 2008 
      Dec 6.