Trace Element Chemistry Studies
نویسنده
چکیده
This work was undertaken to measure background silver in Illinois precipitation in the absence of any known seeding operations in or near Illinois. The overall rainfall-weighted mean concentration at several stations was 73 ng/liter. This is somewhat higher than has been found in unseeded precipitation in the western United States, but probably not high enough to preclude identification of silver iodide seeded precipitation, especially if the more sensitive element ratio method is used.
منابع مشابه
Trace Element Analysis by ICP-MS and Chemometric Approach in Some Euphorbia Specie: Potencial to become a Biomonitor
In this study, the branch, leaves, flowers, roots and mixed all parts of different nine Euphorbia species were analyzed for their trace element contents by using ICP-MS. The samples were digested by concentrated nitric acid and hydrogen peroxide in a microwave by ICP-MS before the analysis. The accuracy and precision of the method was evaluated by CRM 1573a Tomato Leaves. Trace element contents...
متن کاملTrace Element Analysis by ICP-MS and Chemometric Approach in Some Euphorbia Specie: Potencial to become a Biomonitor
In this study, the branch, leaves, flowers, roots and mixed all parts of different nine Euphorbia species were analyzed for their trace element contents by using ICP-MS. The samples were digested by concentrated nitric acid and hydrogen peroxide in a microwave by ICP-MS before the analysis. The accuracy and precision of the method was evaluated by CRM 1573a Tomato Leaves. Trace element contents...
متن کاملTrace element chemistry in residual-treated soil: key concepts and metal bioavailability.
Trace element solubility and availability in land-applied residuals is governed by fundamental chemical reactions between metal constituents, soil, and residual components. Iron, aluminum, and manganese oxides; organic matter; and phosphates, carbonates, and sulfides are important sinks for trace elements in soil-residual systems. The pH of the soil-residual system is often the most important c...
متن کاملTrace elements in hair, as related to exposure in metropolitan New York.
Previous studies have revealed that trace element concentrations in hair can reflect exposure in cases of frank poisoning and deficiency. This study reports significant correlations within a single metropolitan area between trace-element content of hair and exposure (as measured by analyses for the corresponding elements in dustfall or housedust) for Ba, Cr, Pb, Hg, Ni, Sn, and V. Age, sex, h...
متن کاملA Method of Bulk Sampling Wet and Dry Atmospheric Deposition for Trace Element Analysis
Collecting rain for trace elemental analyses can be a difficult task. In Australia, most sampling of atmospheric deposition so far has been concerned with gauging the major element chemistry of atmospheric deposition to the Australian continent. Very little work has been conducted on the trace element chemistry of atmospheric deposition in the Australian landscape and, therefore, collector desi...
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An attempt to characterize natural graphites by their trace element content is reported. Ten samples of graphite of known deposits over the world are classified by their graphitization indices, ranging from 0.26 to 1.00, and analyzed for trace elements content. Results of neutron activation analysis of 28 evaluated elements, i.e. Na, Rb, Cs, Th, U, Cr, Fe, Co, As, Sb, Ag, Au, Se, Te, Zn, Hg, Zr...
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