Development and Validation of Analytical Procedure for Elemental Impurities in Rosuvastatin Calcium Tablets by ICP-MS and Microwave Digestion

Table 9

Precision of 7 elements in rosuvastatin calcium tablets.

Matrix	Recovery (%)
	Cd	Pb	As	Hg	Co	V	Ni
Interday	99.8	100.9	95.1	95.6	97.1	99.1	97.1
	99.0	101.8	94.8	93.6	96.6	97.9	96.5
	101.5	103.6	96.6	93.0	96.4	97.2	96.7
	97.3	101.6	94.6	92.2	95.4	96.4	95.5
	96.9	102.1	95.3	91.3	95.3	98.3	96.0
	100.4	101.2	96.2	90.2	96.5	96.3	95.8
Intraday	99.7	99.8	93.3	95.6	96.2	97.2	96.8
	98.9	100.1	95.6	93.3	94.9	97.6	95.9
	100.2	105.3	94.6	92.8	95.7	98.0	94.7
	101.1	102.9	93.3	91.9	93.9	96.9	96.3
	99.7	104.5	95.8	94.6	96.1	94.9	96.8
	98.6	99.9	96.0	94.3	95.6	95.6	95.9
RSD (%)	1.4	1.8	1.1	1.8	0.9	1.2	0.7