YANG Ying-chun, FENG Yuan-yuan, YIN Hong-ling, YE Zhi-xiang, YU Jing, YANG Huai-jin. Determination of Sulfide Based on Hydrogen Peroxide-morin Chemiluminescence System[J]. Chinese Journal of Luminescence, 2011,32(2): 194-199
YANG Ying-chun, FENG Yuan-yuan, YIN Hong-ling, YE Zhi-xiang, YU Jing, YANG Huai-jin. Determination of Sulfide Based on Hydrogen Peroxide-morin Chemiluminescence System[J]. Chinese Journal of Luminescence, 2011,32(2): 194-199DOI:
Determination of Sulfide Based on Hydrogen Peroxide-morin Chemiluminescence System
a weak chemiluminescence signal was produced when H
2
O
2
was injected into morin solution
and the chemiluminescence signal could be greatly enhanced after the introduction of cetyl trimethyl ammonium bromide(CTMAB) and sulfide. Based on the observation
H
2
O
2
-morin-CTMAB chemiluminescence system has been developed for the determination of sulfide. The possible mechanism of chemiluminescence reaction has also been discussed. Under the optimized conditions
the chemiluminescence intensity of the system presented a linear relationship with the concentration of sulfide in the range of (0.9~9.0)10
-8
g/mL
the linear dynamic equation was
I
CL
=49.41+3.3612
C
S
with correlation coefficient of 0.999 0. The detection limit (S/N=3) was 1.210
-9
g/mL. The relative standard deviations(RSD) was 2.5% for 8.010
-8
g/mL sulfide solution. The proposed method was successfully applied to the determination of sulfide in environmental water samples with recoveries in the range of 95.5%~101.3%.
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Keywords
references
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