arsenous


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ar·se·nous

(ar'-sen-ŭs),
1. Denoting a compound of arsenic with a valence of +3.
2. Arsenic (adj.).
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
When the contaminant is arsenic in a precipitated form of arsenous sulfide, levels of arsenic measured in physical solids samples removed from treated sections decline over a period of time.
The first will result in a precipitate because the hydrochloric acid causes the agglomeration of the arsenous sulfide particles; the second reaction forms a colloidal dispersion of arsenous sulfide stabilized by hydrogen sulfide.
Arsenobetaine, Arsenocholine, Trimethylarsine Oxide, Monomethylarsonic Acid, Dimethylarsinic Acid, Arsenous (III) Acid, Arsenic (V) Acid.
Analyte: Arsenobetaine, Arsenocholine, Trimethylarsine Oxide, Monomethylarsonic Acid, Dimethylarsinic Acid, Arsenous (III) Acid, Arsenic (V) Acid.
Arsenic species in the trivalent state including arsenous acid (commonly arsenite), monomethylarsonous acid ([MMA.sup.III]), and dimethylarsinous acid ([DMA.sup.III]) are generally considered more toxic at lower doses than other arsenic species (ATSDR 2007; Drobna et al.
Laboratory Procedure Manual: Arsenobetaine, Arsenocholine, Trimethylarsine Oxide, Monomethylarsonic Acid, Dimethylarsinic Acid, Arsenous (III) Acid, Arsenic (V) Acid, Total Arsenic.
2008) because arsenous acid (the predominant form of arsenic in flooded rice paddies) is indistinguishable from silicic acid to the rice plant.
Total urinary arsenic concentrations were measured using inductively coupled plasma dynamic reaction cell-mass spectrometry on an ELAN DRC II ICPMS or PerkinElmer ELAN 6100 DRC plus (PerkinElmer SCIEX, Concord, ON, Canada); arsenic species and metabolites (arsenous acid, arsenic acid, MMA, DMA, arsenobetaine, and arsenocholine) were measured using high performance liquid chromatography (HPLC).
From 2003 to 2008, the detection limit was 1.7 [micro]g/L for DMA, 0.9 [micro]g/L for MMA, 1.2 [micro]g/L for arsenous acid, 1.0 [micro]g/L for arsenic acid, 0.6 [micro]g/L for arsenocholine, and 0.4 [micro]g/L for arsenobetaine.
In short, methylated trivalent species--monomethylarsonous acid (MM[A.sup.III]), dimethylarsinous acid (DM[A.sup.III]), and arsenous acid (i[As.sup.III])--are two orders of magnitude more cytotoxic than is As acid (i[As.sup.V]_ (Naranmandura et al.