Lead distribution

P an AYS, Kennedy C. 1989. Lead distribution in rats repeatedly treated with low doses of lead acetate. Environ Res 48 238-247. 

Lead distribution in televisions parts Lead Percentages ... 

Fig. 6 Lead distribution and percentages in TVs, based on Morf and Tavema [10]...

Custer, T.W., J.C. Franson, and O.H. Pattee. 1984. Tissue lead distribution and hematologic effects in American kestrels (Falco sparverius L.) fed biologically incorporated lead. Jour. Wildl. Dis. 20 39-43. 

Friedland, A.J. and A.H. Johnson. 1985. Lead distribution and fluxes in a high-elevation forest in northern Vermont. Jour. Environ. Qual. 14 332-336. 

Dunlop, A.C., Atherden, P.R., Govett, G.J.S. 1983. Lead distribution in drainage channels about the Elura zinc-lead-silver deposit, Cobar, New South Wales, Australia. Journal of Geochemical Exploration 18, 195-204. 

An important factor that influences the lead distribution, especially in the channeled monolith bodies, is the character of flow. There is strong evidence that an induced change of the flow from laminar to turbulent augments the deposition of lead. An example is given in Fig. 7 by the deposition pattern of lead in a dual catalyst. Within each of the catalysts, the deposit pattern is in agreement with those shown in Figs. 4 and 5. However, the lead deposit on the inlet of the oxidation catalyst exceeds con-... 

For tunneling between two equilibrium leads distribution functions are simply Fermi-Dirac functions (48) and current can be finally written in the well known form (To do this one should multiply the integrand on 1 = f 6(E-Eq)dE.)... 

The backscattered image is shown on the lower left side of the figure, and a lead distribution map of the same surface obtained by characteristic x-ray photons is shown on the lower right side. On the top figure, the environment of the spot indicated with No. 2 is enlarged. The bright spots on the backscattered image indicate... 

The results of the quantitative analysis of montmorillonite samples obtained with different Ca-montmorillonite/lead ion ratio and pH are shown in Table 2.14 for the surfaces with even lead distribution. The chemical composition of lead enrichments is shown in Table 2.15. 

Nelson, Y.M. et al., Lead distribution in a simulated aquatic environment Effects of bacterial biofilms and iron oxide, Water Res., 29, 1934, 1995. 

Lead distributes into the red blood cells in the body and consequently causes damage there, interfering very specifically with the means by which haemoglobin is synthesized in red blood cells. This leads to a loss of haemoglobin and therefore of functioning red cells which need haemoglobin to carry oxygen. The lack of red cells is called anaemia and contributes to tiredness, listlessness, and a pale appearance. Fortunately, this effect is reversible once the exposure is reduced, but the effect on the kidney, peripheral nephritis, is more serious and may not be reversible. 

This same type of lead distribution is depicted more quantitatively in Figure 5 by the EPM line scans for lead in the washcoat of a monolithic catalyst that had been subjected to 200 hrs of engine dynamometer testing using ashless oil and fuel containing 0.06g Pb/gal and 350 ppm sulfur. The scanning was done through the washcoat cross section at... 

Mahler, D.T., Scott, A.S., Walsh. J.R. and Haynic, G. (1970). A study of trace metals in finger nails and hair using neutron activation analysis. J.Nucl. Med. 11,739-742 Malik. S.R. and Fremlin, J.H. (1974). A study of lead distribution in human teeth using charged particle activation analysis. Caries Res. 8, 283-292 Manly, R.S. and Hodge, H.G. (1939). Density and refractive index studies of dental hard tissue, J. Dent. Res. 18,133-141... 

Figure 3 - Lead Distribution to the Different Phases for 50% Lead Concentrate...

LeFauconnier, J. M., Bernard, G., Mellerio, F., Sebille, A. and Cesarini, E. (1983). Lead distribution in the nervous system of 8 month-old rats intoxicated since birth by lead. (Submitted to Experientia)... 

Of prime importance in this stage is the deportment of lead to bullion, slag and fume. Ausmelt data has substantially defined this relationship as highly dependent on the lead concentration in the feed as well as the stoichiometric oxygemconcentrate ratio. Table 7.6 summarises the typical lead distribution for high, medium and low-grade feed materials. 

Marked differences were also found in lead distribution. Blood values were about 2.5 times and femur 1.5 times higher in sucklings than in adults. Most striking was the 8 times higher retention of lead in the brain of sucklings (Momcilovic and Kostial, 1974b). 

Baes, C.F., Ragsdale, H.L., 1981. Age-specific lead distribution in xylem rings of three tree genera in Atlanta, Georgia. Environ. PoUut. Ser. B 2, 21—35. 

Chirinje, T., Ma, L.Q., Reeves, M., Szulczewski, M., 2004. Lead distribution in near-surface soils of two Florida cities Gainesville and Miami. Geoderma 119, 113—120. 

Food supplies of developed, industrialized countries in North America and Europe have centrahzed distribution systems and one would expect that the level of heterogeneity for lead distribution in dietary components would vary less across smaller subdivisions of nations than, say, ambient air Pb, dust or soil Pb, and tap water Pb. Variability and uncertainty remain... 

TABLE 8.7 Lead Distribution and Clearance in Blood of Human Populations ... 

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