Table 3. Influence of coexistent metals on platinum determination in Hep G2 cell samples.

Metals	Added concentration (ug/L)	Sample Pta concentration (ug/L)	Number of the experiment						Mean	Average recovery (%)
			1 (ug/L)	2 (ug/L)	3 (ug/L)	4 (ug/L)	5 (ug/L)	6 (ug/L)
Ca	90.9	95.3	85.5	93.3	94.5	96.9	101.2	99.4	95.1	99.8
Mg	90.9	95.3	104.0	96.5	100.8	94.0	93.5	99.3	98.0	102.9
Fe	1.1	75.0	74.8	74.1	67.1	71.1	73.5	67.2	71.3	95.1
Zn	12.2	102.2	111.5	95.4	92.6	103.2	95.3	98.1	99.4	97.2
Cu	1.2	102.2	102.6	111.1	106.1	106.6	104.2	101.9	105.4	103.1
Mn	1.2	102.2	96.0	95.8	108.9	107.5	107.6	107.6	103.9	101.7
K	12.2	102.2	101.6	103.3	97.0	110.8	101.6	106.3	103.4	101.2
Na	12.2	102.2	107.0	104.9	100.2	101.7	100.4	95.6	101.6	99.4

Notes.

^aPlatinum.