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Research Article

Closed Anaerobic Biotransformation Products of Organoarsenic Compounds in Fucus distichus

Table 2

Control experiment for arsenic determination and speciation analysis on the decomposition products from Fucus distichus incubated in a closed anaerobic decomposition system using the semicontinuous mode HG-GC-AAS technique.
S/NClosed system anaerobic decomposition3-hour hot base digestion (2 M NaOH, 5 mL)*
Arsenic before digestion (in µg)Arsenic after digestion (in µg)
DMAATotal AsDMAATotal AsDMAATotal AsDMAATotal As
1CF: Control methanol filtrate extract ndnd0.480.48ndnd5.135.13
2CIF: Control methanol insoluble filtrate material————0.700.7411.6813.12
3CR: Control seaweed extract0.04nd d0.040.04nd9.249.28
 Total arsenic species0.04nd0.480.520.740.7426.0527.53
Control experiment: Seaweed + Seawater samples.
nd: not detected; d: detected; —: not determined; Inorg. As: inorganic arsenic, AsIII & AsV; MMAA: monomethylarsonic acid; DMAA: dimethylarsinic acid.