Optimization of SPE/GC/HPLC Analytical Procedure for Determination of Phenol, Quinones, and Carboxylic Acids in Water Samples

Table 2

Total recovery determined for each compound in SPE/GC/HPLC procedure.

COMPOUND	BM-DVB		DMN-DVB		MEDDE-DVB		MEMDE-DVB		SDB-1
	(%)	𝛿	(%)	𝛿	(%)	𝛿	(%)	𝛿	(%)	𝛿
Phenol-acetic deriv.	92.27	1.51	89.37	3.06	64.65	0.72	50.35	1.90	100.19	5.22
Hydroquinone-acetic deriv.	49.07	4.91	49.08	5.21	38.21	5.23	34.70	3.20	48.88	4.14
Benzoquinone	98.97	2.20	90.74	3.77	91.21	5.14	84.92	1.75	102.82	2.12
Maleic acid	87.26	1.53	89.50	1.49	83.30	1.60	81.42	1.64	87.13	1.53
Fumaric acid	72.70	5.54	67.58	8.39	76.92	4.18	73.77	8.11	77.47	7.54

𝛿: standard deviation.