Table 1. Comparison of the present study with previously reported methods for the determination of fipronil in hen eggs and chicken muscle

Matrix	Spiking levels (μg kg−1)	Recovery (%)	Precision (RSD%)	LOQ (μg kg−1)	Reference
Hen eggs	10–50	91.1–94.1	2.1–8.9	4.8	Current study
Hen eggs	2.5–100	71.6–99.1	5.0–14.4	2.5	Anagnostopoulos et al., 2019
Hen eggs	2.5–50	74.2–112.0	4.4–12.4	2.5	Charalampous et al., 2019
Hen eggs	5–100	88.8–93.8	1.6–4.3	2.0	Song et al., 2019
Hen eggs	2–40	92.8–107.0	1.6–2.2	1.0	Guo et al., 2018
Hen eggs	5–50	78.0–88.0	4.0–5.0	5.0	Hildmann et al., 2015
Hen eggs	0.01–1	79.7–90.5	0.8–6.1	-	Zhang et al., 2016
Chicken muscle	0.01–1	81.3–95.7	1.9–8.8	-	Zhang et al., 2016

RSD, relative standard deviations; LOQ, limit of quantification.