Table 1.

The total arsenic measurement methods used by several authors.

Authors	Sample	Method	Preparation method
Valentine et al., 1979	Blood and hair	HGAAS	Wet ash with nitric/perchloric acids; reduction with sodium borohydride
Foa et al., 1984	Blood	HGAAS	Wet ash with nitric/perchloric acids; reduction with sodium borohydride
Curatola et al., 1978	Hair	HGAAS	Wet ashing with nitric/sulfuric acids and hydrogen peroxide; reduction to arsine with sodium borohydride
Agahian et al., 1990	Nails	HGAAS	Wet ashing with nitric/sulfuric acids and hydrogen peroxide; reduction to arsine with sodium borohydride
Mushak et al., 1977	Soft tissue	GFAAS	Digestion with nitric/sulfuric acids; complexation with DDDC in potassium iodide; extraction with chloroform
Pinto et al., 1976	Urine	Colorimetric photometry	Digestion with nitric and perchloric acid; reduction with tin chloride; generation arsine by addition of zinc; reaction with SDDC
Landsberger and Simsons, 1987	Urine	NAA	Irradiate epithermally