Kinetic Spectrophotometric Determination of Certain Cephalosporins in Pharmaceutical Formulations

Table 2

Analytical parameters for the initial rate method for determination of investigated cephalosporins with alkaline potassium permanganate.

Investigated cephalosporin	Linear range,	Least square equation		Correlation
	M×10^−5	log𝑉=log𝐾^′+𝑛log𝐶		coefficient	LOD 𝜇g mL^-1
	(𝜇g mL^-1)	Intercept (log𝐾^′)	Slope (𝑛)	(𝑟)
Cefotaxime	1.04 to 3.14	1.918	1.007	0.9999	0.121
	(5–15)
Cephapirin	1.18 to 3.54	1.866	1.010	0.9999	0.117
	(5–15)
Cephradine	1.43 to 4.29	1.788	0.9942	0.9997	0.162
	(5–15)
Cephalexin	1.43 to 4.31	1.856	1.001	0.9996	0.19
	(5–15)
Ceftazidime	0.78 to 2.33	2.044	1.046	0.9995	0.233
	(5–15)
Cefazoline	1.1 to 3.3	1.832	0.9918	0.9992	0.28
	(5–15)
Ceftriaxone	0.9 to 2.7	1.884	1.009	0.9994	0.241
	(5–15)
Cefuroxime	1.17 to 3.53	1.985	1.045	0.9996	0.209
	(5–15)