These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Absorption, concentration and determination of trace amounts of air pollutants by flow injection method coupled with a chromatomembrane cell system: application to nitrogen dioxide determination.
    Author: Wei Y, Oshima M, Simon J, Moskvin LN, Motomizu S.
    Journal: Talanta; 2002 Dec 06; 58(6):1343-55. PubMed ID: 18968874.
    Abstract:
    The concentration distribution of an analyte in a chromatomembrane cell (CMC) was examined by using various air samples of different air pollutant (NO(2)) concentrations and volumes, and the results obtained could be explained by a proposed principle of the concentration distribution of the analyte in the CMC. This principle was for the first time proved experimentally in the present study. On-line preconcentration and continuous determination of the air pollutant (NO(2)) in air samples were realized by coupling a three-hole CMC with a flow injection analysis (FIA) system, where a triethanolamine (TEA) aqueous solution (2 g l(-1)) was used as an absorbing solution for NO(2) in the air samples. A calibration method with standard nitrite aqueous solutions was developed for the determination of NO(2) in the air samples. Concentrations of NO(2) in indoor air and its diluted air samples were determined by the proposed CMC/FIA method. The volume of air sample necessary for the measurement was decreased to only 5 ml. The measuring time for one sample was about 5-6 min even when a 20 ml air sample was used.
    [Abstract] [Full Text] [Related] [New Search]