Microwave-Assisted Extraction Coupled with Mass Spectrometry for Determining Five Volatile Compounds from Soy Sauces

Table 3

Accuracy and precision of five volatile organic compounds.

Compounds	Concentrations (ng·mL^−1)	Intraday						Interday (%)	RSD (%)
		Day 1 (%)	RSD (%)	Day 2 (%)	RSD (%)	Day 3 (%)	RSD (%)
Cyclohexane	200	90.84	8.2	91.67	12.1	81.94	5.2	88.15	6.1
	400	95.77	2.8	91.50	10.1	86.58	3.6	91.28	5.0
	600	85.28	3.9	96.86	7.5	105.71	4.8	95.95	10.7
Benzene	100	93.24	6.6	94.80	8.8	87.26	4.5	91.77	4.3
	200	97.36	2.6	95.76	8.1	90.60	2.6	94.57	3.7
	300	87.39	3.3	97.12	6.7	104.55	4.5	96.35	8.9
Toluene	100	89.26	7.6	90.65	8.5	85.91	5.2	88.61	2.7
	200	93.76	3.0	91.65	9.4	89.31	2.8	91.57	2.4
	300	83.87	4.8	92.68	7.7	103.83	5.4	93.46	10.7
Chlorobenzene	100	89.71	7.4	92.38	8.2	87.39	4.8	89.83	2.8
	200	93.72	2.8	92.93	9.0	90.78	2.7	92.48	1.6
	300	83.50	4.5	92.59	7.5	103.45	5.5	93.18	10.7
Styrene	100	85.71	9.5	85.82	9.3	84.33	6.2	85.29	1.0
	200	91.15	3.1	89.44	10.3	90.56	3.0	90.38	1.0
	300	80.86	4.8	90.30	8.4	103.70	5.9	91.62	12.5