Detection Progress of Selected Drugs in TLC

Table 2

Characteristics of densitometric band of detected drugs, modified contrast index, densitometric visualizing index, modified broadening index, and detection index.

Detected drug	Stationary phase, mobile phase	Detection way	Densitometric band characteristic of detected drug			Modified contrast index (AU/°)	Densitometric visualizing index (Au/𝜇g·°)	Modified broadening index (𝜇g/AU)	Detection index (𝜇g/AU)	Reference
			Area (AU)	Height (AU)	α (°)
Estradiol	Neutral aluminum oxide 60F254 toluene + ethyl acetate (1 : 1, v/v)	Without using visualizing reagent	13048	246	14.5	16.966	—	1.916	0.32/495	[43]
Estradiol		Barton’s reagent	23786	255	13	19.615	—	1.051	0.32/1070	[43]
Estradiol		Sulphuric acid	44709	497	13	38.231	—	0.559	0.10/850	[43]
Estradiol		Gentian violet	11348	220	15	14.667	—	2.203	0.32/760	[43]
Estradiol		Methylene violet	13622	221	17	13.000	—	1.835	0.32/705	[43]
Estradiol	Neutral aluminum oxide 150F254 toluene + ethyl acetate (1 : 1, v/v)	Without using visualizing reagent	11424	192	13	14.769	—	2.188	0.32/409	[43]
Estradiol		Gentian violet	10906	127	20	7.700	—	2.292	0.32/796	[43]
Estradiol		Methylene violet	8466	154	33	4.667	—	2.953	0.53/490	[43]
Salicylanilide	Silica gel 60F254 (#1.05744) chloroform	Without using visualizing reagent	72889	707	9	78.5	11.570	0.686	0.07/1590	[44]
Salicylanilide		Brilliant green	91842	704	8	88.0	1.640	0.544	0.70/11112	[44]
(±)-𝛼-Tocopherol	Silica gel 60 toluene	Without using visualizing reagent	34519	459	16	28.69	0.479	0.724	0.45/3100	[41]
(±)-𝛼-Tocopherol		2,2′-Bipyridine-iron (III) chloride	60474	698	9	77.56	0.323	0.413	2.08/8915	[41]
(±)-𝛼-Tocopherol		Methylene violet	40426	636	8	79.50	1.684	0.618	0.30/3456	[41]
(±)-𝛼-Tocopherol		Methyl green	37196	576	9	64.00	1.378	0.672	0.30/1564	[41]
(+)-𝛼-Tocopherol acetate	Silica gel 60 toluene	Without using visualizing reagent	33796	591	11	53.73	1.024	0.740	0.30/1100	[41]
(+)-𝛼-Tocopherol acetate		Rhodamine B	26031	455	15	30.33	0.386	0.960	0.45/1511	[41]
(+)-𝛼-Tocopherol acetate		Gentian violet	29441	545	10	54.50	0.392	0.849	0.75/1884	[41]
(+)-𝛼-Tocopherol acetate		Methyl green	30226	564	11	51.27	0.366	0.827	0.75/3911	[41]
(+)-𝛼-Tocopherol acetate		Janus blue	30125	565	11	51.36	0.365	0.830	0.75/3750	[41]
Ibuprofen	Silica gel 60F254	Without using visualizing reagent	55644	445	26	17.115	0.342	0.449	0.62/3325	[42]
Ibuprofen	chloroform + methanol (50 : 1.4, v/v)	Methylene violet	53696	348	35	9.943	0.123	0.466	1.25/4438	[42]
Stearic acid	Silica gel 60 n-hexane + acetone (4 : 1, v/v)	Rhodamine B	6567	82	31	2.645	0.017	4.32	1.25/900	[45]
Stearic acid		Methylene blue	30918	368	14	26.286	3.155	0.92	0.07/245	[45]
Stearic acid		Janus blue	36175	462	11	42.000	2.741	0.79	0.12/604	[45]
Stearyl alcohol	Silica gel 60 n-hexane + ethyl acetate + methanol (46 : 3.5 : 0.5, v/v/v)	Rhodamine B	3605	100	13	7.692	0.019	7.49	1.48/234	[45]
Stearyl alcohol		Malachite green	12378	333	7	47.571	0.553	2.18	0.32/382	[45]
Stearyl alcohol		Janus blue	10963	269	13	20.692	0.264	2.46	0.32/214	[45]