Determination of Sudan red contaminants at trace level from water samples by magnetic solid-phase extraction using Fe@NiAl-layered double hydroxide coupled with HPLC

Environmental Sciences Europe

Table 3 Comparison with reported methods for the Sudan dyes determination

Sample pretreatment method	Detection method	Matrices	Linear ranges (μg L⁻¹)			LOD (μg L⁻¹)	Refs.
Sample pretreatment method	Detection method	Matrices	Sudan II	Sudan III	Sudan IV	LOD (μg L⁻¹)	Refs.
MSPE	HPLC	Water	0.025–5	0.025–5	0.025–5	0.0029–0.0068	[4]
MSPE	UFLC^a	Juice	0.0208–15	0.0208–15	0.0625–15	0.0057–0.017	[5]
MSPE	Capillary LC	Food	0.25–2	0.25–2	0.25–2	0.05–0.07	[18]
DLLME^b	HPLC	Water	0.3–40	1.2–160	1.2–160	0.18–0.46	[21]
MA-LLME^c	HPLC	Juice	4.5–300	4.50–250	4.50–250	1.14–1.30	[53]
MSPE	HPLC	Water	0.1–300	0.1–300	0.1–300	0.002–0.005	Present work