Novel Method of Analysis for the Determination of Residual Formaldehyde by High-Performance Liquid Chromatography

Table 2

Spiked sample recoveries (%) and RSD (%) at QL, low, mid, and high levels.

Spiked samples	Recovery (%)	RSD (%)
QL A	114.1	3.3
QL B	115.0
QL C	108.4
QL D	119.2
QL E	111.7
QL F	110.9
Low spike A	101.8	1.9
Low spike B	105.4
Low spike C	105.1
Mid spike A	105.5	0.4
Mid spike B	104.7
Mid spike C	104.7
Mid spike D	105.3
Mid spike E	105.0
Mid spike F	105.7
High spike A	103.4	0.3
High spike B	103.9
High spike C	103.4