Speciation Analysis of Arsenic Compounds by High-Performance Liquid Chromatography in Combination with Inductively Coupled Plasma Dynamic Reaction Cell Quadrupole Mass Spectrometry: Application for Vietnamese Rice Samples

Table 6

Concentration of arsenic species and total concentration in certified reference material (ERM-BC 211).

No.	Analyte	Concentration (μg·kg^−1)
		Experimental results (mean value ± SD, )	Certified valued (certified value ± U, k = 2)
1	DMA	123.45 ± 4.45	119 ± 13
2	As(III)	<LOD	nc^a
3	As(V)	134.79 ± 10.93	nc^a
4	Total iAs	134.79 ± 10.93	124 ± 11
5	Total As	258.95 ± 16.05	260 ± 13

^aConcentration of As(III) and As(V) is not shown in the certification of analysis of ERM-BC 211.