Eco-friendly, sensitive and inventive first derivative synchronous spectrofluorimetric determination of ciprofloxacin and phenylephrine in their pure form, single and combined eye drops

Table 6 Assay of CFX and PLN in their single commercial eye drops by the suggested first derivative synchronous method

Parameter	Conc taken (µg /mL)	% Found ^a	Comparison method [36] % Found ^a
Ciprocin® eye drops (0.3% CFX)	0.5	100.16	100.21
	1.0	99.35	99.69
	2.0	98.95	101.95
	3.0	102.09	98.90
Mean ± SD	100.14 ± 1.39		100.19 ± 1.29
t	0.04
F	1.17
Phenylmedrin® eye drops (2.5% PLN)	0.02	98.35	101.43
	0.05	99.53	102.14
	0.07	100.16	100.48
	0.1	101.89	99.64
Mean ± SD	99.98 ± 1.48		100.92 ± 1.09
t	1.03*
F	1.82*

^a The average of three separate results
^* The tabulated t and F values are 2.45 and 9.28 respectively at p = 0.05 [39]

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