Development of a New Sequential Extraction Procedure of Nickel Species on Workplace Airborne Particulate Matter: Assessing the Occupational Exposure to Carcinogenic Metal Species

Table 5

Extraction of specific Ni’s compounds in two mixtures of powders. For each Ni species the percentage of recovery with respect to the Ni salt added is reported.

Ni species	Mixture A		%	Mixture B
	Ni added; (mg)	Ni found (mg)		Ni added; (mg)	Ni found (mg)	%
NiSO4	0.016	0.013	81	0.054	0.049	91
Ni3S2	0.096	0.080	83	0.310	0.290	93
Ni(0)	0.114	0.11	96	0.367	0.371	101
NiO	0.064	0.065	102	0.207	0.220	106