1[1]C.A.Benassi et al,J.Chromatogra.,502(1990) 193.
2Dahlgran JR, Jameson MN.Determination of formaldehyde and other aldehydes in industrial surfactantsby liquid chromatographic separation of their repective 9.4-dinitrpohenylhydrazine derivatives [J].J Assoc off anal chem, 1988,7(3):560
4Evmiridis NP, karayannis MI.Determination of formaldehyde using a kinetic-spctrophotometric method pard:oxidation of p-phenylenediamine with hydrogen peroxide[J]. Analyst, 1987,112(6):831