Figure 7: Arsenic speciation standard chromatogram. | Scientific Reports

Figure 7: Arsenic speciation standard chromatogram.

From: Urinary arsenic profiles reveal exposures to inorganic arsenic from private drinking water supplies in Cornwall, UK

Figure 7

Chromatograms obtained for standard calibration solutions at 1, 10 and 50 μg/ L. Calibration of arsenate (AsV), methylarsonate (MA), dimethylarsinate (DMA) and arsenobetaine (AB) was performed with mixed solutions of arsenic (V) oxide hydrate (As2O5·xH2O), monomethylarsonic acid ((CH3AsO(OH)2), dimethylarsinic acid ((CH3)2AsO(OH)) and arsenobetaine ((CH3)3As + CH2COO-) respectively. Calibration of arsenite (AsIII) has been plotted simultaneously and was achieved with separate solutions of arsenic trioxide (As2O3).

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