Comparison between Different Extraction Methods for Determination of Primary Aromatic Amines in Food Simulant

Table 2

The recovery of PAAs in 3% acetic acid.

Compounds	Amount spiked (μg·l^−1)	Recovery (%)	RSD	Amount spiked (μg·l^−1)	Recovery (%)	RSD	Amount spiked (μg·l^−1)	Recovery (%)	RSD
First day
2,6-TDA	7.5	90.26	2	15	93.74	1.4	30	96.46	1.3
2,4-TDA	7.5	74.4	3.3	15	87.77	3.3	30	92.92	2.6
4,4′-MDA	7.5	83.94	2.6	15	95.28	0.95	30	96.33	0.95
2,4′-MDA	7.5	95	1.6	15	94.76	1.4	30	96.86	1.4
2,2′-MDA	7.5	81.58	2.69	15	93.58	2.71	30	94.79	1.1
Second day
2,6-TDA	7.5	90.77	2.6	15	94.04	1.4	30	96.94	1.3
2,4-TDA	7.5	74.90	4.2	15	91.97	4.1	30	93.9	1.1
4,4′-MDA	7.5	89.26	2.7	15	94.53	1.3	30	97.03	0.43
2,4′-MDA	7.5	96.76	1.8	15	97.08	1.1	30	97.15	0.96
2,2′-MDA	7.5	85.02	2.18	15	93.16	2.07	30	94.93	4.6
Third day
2,6-TDA	7.5	89.76	2.4	15	94.90	1.5	30	95.80	1.5
2,4-TDA	7.5	77.9	4.8	15	91.21	2.2	30	92.9	1.8
4,4′-MDA	7.5	88.13	0.94	15	94.79	2.5	30	96.29	0.4
2,4′-MDA	7.5	94.94	2.17	15	97.17	2.2	30	98.05	1.1
2,2′-MDA	7.5	85.38	3.37	15	94.82	4.6	30	95.44	0.61