Spectrophotometric Determination of Iron(II) and Cobalt(II) by Direct, Derivative, and Simultaneous Methods Using 2-Hydroxy-1-Naphthaldehyde-p-Hydroxybenzoichydrazone

Table 9

Analysis of blood and urine samples for cobalt content.

Sample source	Sample	Cobalt (μg mL^−1)
		Present method±SD (𝑛=5)	AAS method±SD (𝑛=5)
Normal adult (male)	Blood	2.44±0.020	2.48±0.014
	Urine	0.38±0.010	0.35±0.022
Anemia patient (female)	Blood	0.86±0.020	0.92±0.020
	Urine	0.24±0.030	0.23±0.014
Paralysis patient	Blood	8.46±0.030	8.65±0.032
	Urine	2.65±0.020	2.43±0.025
Pulmonary patient	Blood	4.32±0.015	4.26±0.010
	Urine	1.96±0.022	2.04±0.018