Flow-injection chemiluminescence determination of formaldehyde with a bromate-rhodamine 6G system.
In this paper, a novel flow-injection chemiluminescence (CL) system for the determination of formaldehyde is described. It is based on a strong enhance effect of formaldehyde on the weak CL emission of the reaction between potassium bromate and rhodamine 6G in a sulfuric acid medium. A possible mechanism for this CL reaction is proposed. A CL calibration graph was linear in the range of 0.8 - 200 microg l(-1) and the detection limit was 0.3 microg l(-1) (3sigma). The relative standard deviation was less than 3% for 10 microg l(-1) formaldehyde (n = 11). The method has been applied to determine formaldehyde in the air samples.
Li
Baoxin
B
Department of Chemistry, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an, 710062, PR China.
Liu
Meilin
M
Zhang
Zhujun
Z
Xu
Chunli
C
D000397:Air Pollution / Q000032:analysis*; D001959:Bromates; D017022:Flow Injection Analysis; D005557:Formaldehyde / Q000032:analysis*; D008163:Luminescent Measurements; D012235:Rhodamines; D013057:Spectrum Analysis / Q000379:methods / Q000592:standards
D001959:Bromates; D012235:Rhodamines; D005557:Formaldehyde