. 2022 Apr 6;27(7):2353. doi: 10.3390/molecules27072353

Table 1.

Analytical performances and EF values of six estrogens using in-tube SPME-HPLC method.

Analytes	LODs (μg/L)	LOQs (μg/L)	Linear Ranges (μg/L)	R²	EF	Extraction Repeatability (n = 3, RSD%) ^a		Preparation Repeatability (n = 3, RSD%) ^b
Analytes	LODs (μg/L)	LOQs (μg/L)	Linear Ranges (μg/L)	R²		Intraday	Interday	Preparation Repeatability (n = 3, RSD%) ^b
Bisphenol A	0.097	0.323	0.5–10.0	0.9857	20	2.0	4.6	10.4
Estradiol	0.135	0.450	0.5–10.0	0.9886	33	2.1	4.8	8.9
Ethynyl estradiol	0.131	0.437	0.5–10.0	0.9886	28	1.3	3.2	5.2
Estrone	0.079	0.263	0.5–10.0	0.9867	177	0.8	4.5	14.3
Diethylstilbestrol	0.132	0.440	0.5–10.0	0.9794	43	1.7	4.0	2.3
Hexestrol	0.092	0.307	0.5–10.0	0.9910	154	0.9	2.9	9.4

^a Extraction repeatability was investigated by extracting 10 μg/L of estrogens three times. ^b Preparation repeatability was investigated by extracting 10 μg/L of estrogens with three extraction tubes.