Determination of Very Low Level of Free Formaldehyde in Liquid Detergents and Cosmetic Products Using Photoluminescence Method

Table 8

The comparison between different methods.

Method	Temperature of derivative reaction	Detection limit (M)	Disadvantage of method	References
HPLC	25°C	—	Need organic solvent; Cleanup step; Time consuming	[8]
GC/MS	35°C and 10 min	1.3 × 10^−7	Cleanup step	[12]
Spectrofluorimetry (acetyl acetone)	35°C and 1 hour	8.0 × 10^−9	Need heating system; Long reaction time	[24]
Spectrofluorimetry	25°C and 8 min	4.0 × 10^−9	—	This work