HPLC–HR-ESI–MS/MS identification of fluorescent dyes and optical brighteners and their degradation products in daylight fluorescent paints

Heritage Science

Table 3 Dyes and optical brighteners and their degradation products found in paint samples

Molecular formula	Origin (degradation)	Blue UV aged	Lemon Yellow VIS aged	Brick Red VIS aged	Violet VIS aged
C₂₇H₂₉N₂O₃⁺	BR1:1			++	+
C₂₅H₂₅N₂O₃⁺	BR1:1 (–C₂H₄)			++	+
C₃₀H₃₅N₂O₃⁺	BV11				+
C₁₄H₁₈NO₂⁺	FB61	+++
C₁₂H₁₄NO₂⁺	FB61 (–C₂H₄)	+++
C₁₀H₁₀NO₂⁺	FB61 (–C₄H₈)	++
C₁₂H₁₈NO₂⁺	FB61 (–C₂)	+++
C₁₄H₁₈NO₃⁺	FB61 (+ O)	++
C₁₂H₁₂NO₃⁺	FB61 (–C₂H₆; + O)	+
C₁₁H₁₀NO₃⁺	FB61 (–C₃H₈; + O)	+
C₂₆H₂₇N₂O₂S⁺	FB184	++	+++	+++	++

The semiquantitative results are labeled as follows: + in trace amounts, ++ in low amounts, +++ in medium amounts