A novel water-soluble fluorescent probe for the determination of methylamine.
A novel water-soluble fluorescent probe, monosodium 7-(4,6-dichloro-1,3,5-triazinylamino)-1,3-naphthalenedisulfonic acid (DTND), was synthesized by reacting cyanuric chloride with 7-amino-1,3-naphthalenedisulfonic acid monopotassium salt at 0-5 degrees C. This new reagent was used for the determination of methylamine. The linear range is 3x10(-6)-2x10(-4) mol L(-1) with a detection limit (S/N=3) of 7.2x10(-8) mol L(-1), and the relative S.D. is 1.3% for ten replicate determinations of 1x10(-5) mol L(-1) CH3NH2. Common species in the aqueous environment have no or only slight influence on the determination. The method can be used to determine methylamine in real water samples.
Gu
H
H
Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing.
Ma
H M
HM
Liang
S C
SC
D005456:Fluorescent Dyes; D013058:Mass Spectrometry; D008744:Methylamines / Q000032:analysis*; D014227:Triazines / Q000378:metabolism
D005456:Fluorescent Dyes; D008744:Methylamines; D014227:Triazines; C004632:cyanuric acid