start-ver=1.4
cd-journal=joma
no-vol=612
cd-vols=
no-issue=2
article-no=
start-page=165
end-page=172
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2008
dt-pub=200804
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Development of novel detection reagent for simple and sensitive determination of trace amounts of formaldehyde and its application to flow injection spectrophotometric analysis
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=In this paper, a novel detection reagent for formaldehyde determination is proposed, and is applied to a simple and highly sensitive flow injection method for the spectrophotometric determination of formaldehyde. The method is based on the reaction of formaldehyde with methyl acetoacetate in the presence of ammonia. The increase in the absorbance of the reaction product was measured at 375 nm. An inexpensive light emitting diode (LED)based UV detector (375 nm) was, for the first time, used. Under the optimized experimental conditions, formaldehyde in an aqueous solution was determined over the concentration range from 0.25 to 20.0 x 10(-6) M with a liner calibration graph; the limit of detection (LOD) of 5 x 10(-8) M (1.5 mu g L-1) was possible. The relative standard deviation of 12 replicate measurements of 5 X 10(-6) M formaldehyde was 1.2%. Maximum sampling throughput was about 21 samples/h. The effect of potential interferences such as metals, organic compounds and other aldehyde was also examined. The analytical performance for formaldehyde determination was compared with those obtained by the conventional acetylacetone method, which uses visible absorption spectrophotometry. Finally, the proposed method was successfully applied to the determination of formaldehyde in natural water samples.
en-copyright=
kn-copyright=

en-aut-name=LiQiong
en-aut-sei=Li
en-aut-mei=Qiong
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=SritharathikhumPiyanete
en-aut-sei=Sritharathikhum
en-aut-mei=Piyanete
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=OshimaMitsuko
en-aut-sei=Oshima
en-aut-mei=Mitsuko
kn-aut-name=大島光子
kn-aut-sei=大島
kn-aut-mei=光子
aut-affil-num=3
ORCID=

en-aut-name=MotomizuShoji
en-aut-sei=Motomizu
en-aut-mei=Shoji
kn-aut-name=本水昌二
kn-aut-sei=本水
kn-aut-mei=昌二
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=2
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=3
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University

affil-num=4
en-affil=
kn-affil=Department of Chemistry, Faculty of Science, Okayama University
en-keyword=Flow injection
kn-keyword=Flow injection
en-keyword=Formaldehyde determination
kn-keyword=Formaldehyde determination
en-keyword=Spectrophotometry
kn-keyword=Spectrophotometry
en-keyword=Methyl acetoacetate
kn-keyword=Methyl acetoacetate
en-keyword=UV-light emitting diode (LED)
kn-keyword=UV-light emitting diode (LED)
END