PMID- 20813443
OWN - NLM
STAT- MEDLINE
DCOM- 20101227
LR  - 20100914
IS  - 1873-6424 (Electronic)
IS  - 0269-7491 (Linking)
VI  - 158
IP  - 11
DP  - 2010 Nov
TI  - Inter-laboratory comparison study on measuring semi-volatile organic chemicals in 
      standards and air samples.
PG  - 3365-71
LID - 10.1016/j.envpol.2010.07.041 [doi]
AB  - Measurements of semi-volatile organic chemicals (SVOCs) were compared among 21 
      laboratories from 7 countries through the analysis of standards, a blind sample, 
      an air extract, and an atmospheric dust sample. Measurement accuracy strongly 
      depended on analytes, laboratories, and types of standards and samples. 
      Intra-laboratory precision was generally good with relative standard deviations 
      (RSDs) of triplicate injections <10% and with median differences of duplicate 
      samples between 2.1 and 22%. Inter-laboratory variability, measured by RSDs of 
      all measurements, was in the range of 2.8-58% in analyzing standards, and 
      6.9-190% in analyzing blind sample and air extract. Inter-laboratory precision 
      was poorer when samples were subject to cleanup processes, or when SVOCs were 
      quantified at low concentrations. In general, inter-laboratory differences up to 
      a factor of 2 can be expected to analyze atmospheric SVOCs. When comparing air 
      measurements from different laboratories, caution should be exercised if the data 
      variability is less than the inter-laboratory differences.
CI  - 2010. Published by Elsevier Ltd. All rights reserved.
FAU - Su, Yushan
AU  - Su Y
AD  - Air Quality Research Division, Science and Technology Branch, Environment Canada, 
      Toronto, Ontario, Canada. yushan.su@ec.gc.ca
FAU - Hung, Hayley
AU  - Hung H
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - Environ Pollut
JT  - Environmental pollution (Barking, Essex : 1987)
JID - 8804476
RN  - 0 (Air Pollutants)
RN  - 0 (Dust)
RN  - 0 (Volatile Organic Compounds)
SB  - IM
MH  - Air Pollutants/*analysis/standards
MH  - Chemistry Techniques, Analytical/standards
MH  - Dust/analysis
MH  - Laboratories/statistics & numerical data
MH  - Reference Standards
MH  - Reproducibility of Results
MH  - Volatile Organic Compounds/*analysis/standards
EDAT- 2010/09/04 06:00
MHDA- 2010/12/28 06:00
CRDT- 2010/09/04 06:00
PHST- 2010/04/21 00:00 [received]
PHST- 2010/07/19 00:00 [revised]
PHST- 2010/07/26 00:00 [accepted]
PHST- 2010/09/04 06:00 [entrez]
PHST- 2010/09/04 06:00 [pubmed]
PHST- 2010/12/28 06:00 [medline]
AID - S0269-7491(10)00337-4 [pii]
AID - 10.1016/j.envpol.2010.07.041 [doi]
PST - ppublish
SO  - Environ Pollut. 2010 Nov;158(11):3365-71. doi: 10.1016/j.envpol.2010.07.041.