Analytical Strategies for the Determination of Arsenic in Rice

Table 3

Nonchromatographic methods for speciation of arsenic in rice.

Arsenic species	Sample preparation	Detection	Figures of merit	Reference
As(III) and As(V)	Assisted digestion microwave with 0.14 mol/L HNO3	HG-AAS	LOD: 1.96–3.85 ng/g	[65]
As(III) and As(V)	Vortex with 25 mL of solution 0.05 mol/L (NH4)2CO3	HG-AFS	LOD: 1.3–4.4 ng/g; Recovery: 94-95%	[55]
As(III) and As(V)	Cloud point extraction	UV-Vis	LOD: 1.14 g/L; Enrichment factor: 65; Recovery: 95–102%	[66]
Total As and As(V)	Sonication with 0.5 mol/L HNO3	ETAAS	LOD: 10–33 ng/L; Enrichment factor: 78.3; Recovery: 90.8–113.1%	[51]
Inorganic As, MMA, DMA, and AsB	0.01 mol/L TMAH (tetramethylammonium hydroxide)	ETAAS	LOD: 15–50 ng/g	[67]
Total As, As(III), and As(V)	Assisted digestion microwave with 1.0 mol/L HNO3	ETAAS	LOD: 19–30 g/Kg; LOQ: 57–90.3 g/Kg; Recovery: 92–105%	[49]

LOD: limit of detection; LOQ: limit of quantification.