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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 26, Number 12
BKCSDE 26(12)
December 20, 2005 
 
Title
 Chemiluminescence System with Air Pump as a Sensor for Determination of Metal Levels in Rain
Author
 Hyuckgi Hong, H. B. Lim*
Keywords
 Chemiluminescence, Determination of metal ions, Rain analysis, Air pump
Abstract
 A lab-made chemiluminescence system with air pump was developed for monitoring of some metal levels in rain. The air pump enabled injection of 17.7 μg samples into a glass cell filled with luminol-H2O2 reagent of typically 300 μL for chemiluminescence measurement. The monitored trend of total metal ions in the rain collected in our campus was compared with analytical results of each metal ion from GFAAS. The system was also demonstrated to determine Cr6+ by reduction to Cr3+ using SnCl2. The limit of detection for Cr6+ obtained by 4 measurements was 85.0 pg mL-1 with a relative standard deviation of 3.4%. Although this system doesn’t have selectivity due to the characteristics of chemiluminescence, application of it to environmental monitoring as a sensor for some transition metal ions was demonstrated.
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