Miniaturized Fluorimetric Method for Quantification of Zinc in Dry Dog Food

Table 2

Zn(II) amount in pet food samples expressed as mg of Zn per kg of dry food.

Sample	Proposed method	ICP-MS method	Absolute deviation	Rd (%)
A	393 ± 14	357 ± 15	36	10.2
B	472 ± 13	421 ± 30	51	12.1
C	336 ± 10	342 ± 32	−6	−1.8
D	433 ± 25	378 ± 22	55	14.6
E	279 ± 20	286 ± 10	−7	−2.6
F	297 ± 43	256 ± 1	41	15.8
G	225 ± 9	243 ± 3	−18	−7.4
H	228 ± 19	243 ± 2	−15	−6.2