Observations on the affect of metallic mercury upon some microorganisms

Horwitz, Leonard

doi:10.1002/jcp.1030490305

Cited by 7 publications

(3 citation statements)

References 15 publications

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“…The partition coefficient for metallic mercury between lipoids and air at 40" is approximately 25:1 (HUGHES 1957), and mercury vapour probably passes through the alveolar and capillary walls by simple diffusion. HORWITZ (1957) showed that mercury vapour passes through plant and bacterial membranes unchanged. The rate of Hg uptake in blood in v i m is sufficiently high to explain a complete alveolar absorption it7 viw.…”

Section: Discussionmentioning

confidence: 99%

Uptake of Mercury Vapour in Blood in Vivo and in Vitro from Hg‐containing Air

Kudsk

1969

Acta Pharmacologica et Toxicologica

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Section: Discussionmentioning

confidence: 99%

Uptake of Mercury Vapour in Blood in Vivo and in Vitro from Hg‐containing Air

Kudsk

1969

Acta Pharmacologica et Toxicologica

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“…The measured radioactivity of 203Hg in the leaves presumably reflects the net consequence of biological oxidation of the elemental form. Horwitz (7) concluded that such oxidation probably occurs within the cell when he demonstrated the ability of Hg vapor to pass intact through plant and bacterial membranes. The passage of the elemental form across membranes is attributed to its lipoid solubility (8).…”

Section: Methodsmentioning

confidence: 99%

Differential Uptake of Mercury Vapor by Gramineous C₃ and C₄ Plants

Browne¹,

Fang²

1983

Plant Physiol.

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The uptake of mercury vapor by six gramineous plant species was compared under uniform conditions using a whole-plant chamber and 2"Hg-labeled mercury at a low atmospheric concentration. Mean Hg uptake by leaves of the C3 species oats (Avena sativa), barley (Hordeum vulgare), and wheat (Triicum aestivun) was 5 times greater than that by leaves of the C4 species corn (Zea mays), sorghum (Sorghm bicolor), and crabgrass (Digitaria sangualis). Mthough there was a difference in resistances associated with vapor entry into the leaves, as shown by estimates of gas exchange, the differential uptake by C3 and C4 species was largely attributable to internal resistankces to Hg vapor binding. The nature of the internal resistances and the site or sites of Hg vapor binding remain unspecified.In an earlier paper (3), we reported the results of a study into the uptake, by wheat, of metallic mercury vapor, the principal form of atmospheric mercury pollution. Essentially all Hg accumulation was found to be confined to the leaves, and a simple gas exchange model was employed to elucidate the effect of several environmental parameters upon the rate of Hg vapor uptake. The model was of the form,

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“…A small glass cup (Fig. 1, B) was attached to the stopper with a 6-inch (15.24-cm) glass rod to perform a function similar to that of the side arm of the Warburg vessel used by Horwitz (4). Liquid mercury was added to the glass cup, and the glass cup stopper was placed in the flask.…”

mentioning

confidence: 99%