Development of Flow Injection Spectrophotometric Method for 1-Napthylthiourea Using Sodium Nitrite and Sulphanilic Acid Diazotization Reaction

Table 2

Comparison of analytical characteristics of the proposed method with other methods used for the analysis of ANTU.

Technique	Sample matrix	Linear range (mg/L)	LOD (mg/L)	R^2	Reference
FL^a	Wheat grain	0.05–1.00	0.01	0.999	[12]
DPP^b	Urine	0.2–10	0.04	—	[13]
ASV^c	Cattle feed and urine	Up to 0.81	8 × 10^−5	0.9980	[14]
HPLC-DAD^d	River water	—	1.2 × 10^−3	0.9978	[15]
HPLC-MS^e	Water	2 × 10^−4–2.5 × 10^−2	9.57 × 10^−4	—	[16]
sFI-CL^f	Water, wheat, barley, and oat grain	0.05–3	0.005	0.998	[19]
FI spectrophotometry	Water	0.05–120	0.01	0.9995	This work

^aFlourimetry; ^bdifferential pulse polarography; ^cadsorptive stripping voltammetry; ^dhigh-performance liquid chromatography-diode array detector; ^ehigh-performance liquid chromatography-mass spectrometry; ^fstop flow injection-chemiluminescence.