Labile lead in polluted soils measured by stable isotope dilution
نویسندگان
چکیده
منابع مشابه
Bioavailability of soilborne lead in adults, by stable isotope dilution.
Using stable isotope dilution, we determined the bioavailability of soilborne lead (Pb) in human adult volunteers. Soil from a residential yard at a mining-impacted federal Superfund site that had negligible amounts of other priority pollutants was dried and screened through a 25-micron mesh sieve. The < 250-micron fraction, which likely represents that ingested via hand-to-mouth activity, was ...
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BACKGROUND Liquid chromatography-tandem mass spectrometry (LC-MS/MS) with electrospray ionization is robust and allows accurate measurement of both low- and high-molecular weight components of complex mixtures. We developed a LC-MS/MS method for the analysis of methylmalonic acid (MMA), a biochemical marker for inherited disorders of propionate metabolism and acquired vitamin B(12) deficiency. ...
متن کاملHigh accuracy (stable isotope dilution) measurements of lead in serum and cerebrospinal fluid.
The concentration of lead in blood, serum, cerebrospinal fluid, and urine was measured in patients with neurological disease and in control subjects including cases of plumbism. A plot of blood lead versus serum lead resembles the familiar curves of blood lead versus either free erythrocyte porphyrin or urinary delta-aminolaevulinic acid in that serum lead is constant up to a blood lead concent...
متن کاملA human in vivo model for the determination of lead bioavailability using stable isotope dilution.
Beverages stored in lead-crystal glass accumulate extraordinary concentrations of lead. We obtained a lead-crystal decanter manufactured with lead from Australia, where the ratio of 206Pb/207Pb is distinctly different from that in the United States. We sought to determine the bioavailability of crystal-derived lead, using the technique of stable isotope dilution in blood. We conducted a single-...
متن کاملTiglylglycine excreted in urine in disorders of isoleucine metabolism and the respiratory chain measured by stable isotope dilution GC-MS.
Tiglyglycine (TG), an intermediate product of the catabolism of isoleucine, is increased in the urine of patients with beta-ketothiolase deficiency or with disorders of propionate metabolism. It is also implicated as a useful diagnostic marker in disorders of the respiratory chain. We present a method for the synthesis of TG and tiglyl[13C, 15N]glycine and the development of a stable isotope di...
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ژورنال
عنوان ژورنال: European Journal of Soil Science
سال: 2007
ISSN: 1351-0754,1365-2389
DOI: 10.1111/j.1365-2389.2005.00788.x