PMID- 16810641
OWN - NLM
STAT- MEDLINE
DCOM- 20070816
LR  - 20131121
IS  - 1076-5174 (Print)
IS  - 1076-5174 (Linking)
VI  - 41
IP  - 7
DP  - 2006 Jul
TI  - Zirconia-coated graphite adsorption bar micro-extraction combined with ETV-ICP-MS 
      for the determination of trace amounts of Cd, Hg and Pb in environmental and 
      biological samples.
PG  - 887-93
AB  - In this work, a new and simple micro-extraction method termed graphite adsorption 
      bar micro-extraction was developed, for the first time, for electrothermal 
      vaporization inductively coupled plasma mass spectrometry (ETV-ICP-MS) 
      determination of trace Cd, Hg and Pb. In this method, the graphite bar was first 
      coated with zirconia and then inserted into the sample solution for extraction. 
      The graphite bar enriched with the analytes was inserted directly into a graphite 
      tube, and subsequently analyzed by ETV-ICP-MS according to an established 
      temperature program. The experimental parameters, which had influence on the 
      extraction and vaporization, were systematically investigated and the optimal 
      experimental conditions were established. Under the optimized conditions, the 
      detection limits of the method were 0.05, 0.42 and 0.06 pg/ml for Cd, Hg and Pb 
      and the relative standard deviations (RSDs) for 11 replicates at the 0.1 ng/ml 
      level were 7.4, 8.2 and 7.7%, respectively. The proposed method was successfully 
      applied to the determination of trace Cd, Hg and Pb in environmental and 
      biological samples. The results of the experiments indicate that the method has a 
      high enrichment factor and sample utilization efficiency. Furthermore, the method 
      is fast and environment-friendly.
FAU - Pu, Xuli
AU  - Pu X
AD  - Department of Chemistry, Wuhan University, Wuhan 430072, China.
FAU - Jiang, Zucheng
AU  - Jiang Z
FAU - Hu, Bin
AU  - Hu B
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - J Mass Spectrom
JT  - Journal of mass spectrometry : JMS
JID - 9504818
RN  - 00BH33GNGH (Cadmium)
RN  - 2P299V784P (Lead)
RN  - 7782-42-5 (Graphite)
RN  - C6V6S92N3C (Zirconium)
RN  - FXS1BY2PGL (Mercury)
RN  - S38N85C5G0 (zirconium oxide)
SB  - IM
MH  - Adsorption
MH  - Cadmium/*analysis
MH  - Calibration
MH  - Environment
MH  - *Graphite
MH  - Lead/*analysis
MH  - Mass Spectrometry/methods
MH  - Mercury/*analysis
MH  - Volatilization
MH  - *Zirconium
EDAT- 2006/07/01 09:00
MHDA- 2007/08/19 09:00
CRDT- 2006/07/01 09:00
PHST- 2006/07/01 09:00 [pubmed]
PHST- 2007/08/19 09:00 [medline]
PHST- 2006/07/01 09:00 [entrez]
AID - 10.1002/jms.1046 [doi]
PST - ppublish
SO  - J Mass Spectrom. 2006 Jul;41(7):887-93. doi: 10.1002/jms.1046.