The H-point standard addition method (HPSAM), based on spectrophotometric measurements for simultaneous determination of beryllium and aluminium, is described. This method is based on the difference between their rates of reactions with Chrome Azurol S (CAS) in cetyltrimethylammonium bromide (CTAB) micellar media. The results showed that beryllium and aluminium could be determined simultaneousl...

BACKGROUND Up to 12% of beryllium-exposed American workers would test positive on beryllium lymphocyte proliferation test (BeLPT) screening, but the implications of sensitization remain uncertain. METHODS Seventy two current and former employees of a beryllium manufacturer, including 22 with pathologic changes of chronic beryllium disease (CBD), and 50 without, with a confirmed positive test ...

The effect of intravenous injection of beryllium nitrate to adult female Albino rats primed with Liv.52 and to non-primed rats has been studied on various hematological parameters after 2, 10 and 30 days of such injection. There was a significant decrease in RBC count, Hb%, neutrophils, blood sugar, alkaline phosphatase, globulin and total protein values with the administration of beryllium nit...

Chronic beryllium disease (CBD) is characterized by granulomatous inflammation and the accumulation of CD4(+) T cells in the lung. Patch testing of CBD patients with beryllium sulfate results in granulomatous inflammation in the skin. We investigated whether the T cell clonal populations present in the lung of CBD patients would also be present in the involved skin of a positive beryllium patch...

Chronic beryllium disease (CBD) is a granulomatous disorder that affects the lung after exposure to beryllium. The present study reports short- and long-term evolution of granulomatous and fibrotic components in eight patients with severe CBD receiving corticosteroid therapy. Eight patients with confirmed CBD were studied at baseline, after initial corticosteroid treatment (4-12 months), at rel...

Sputtering erosion/redeposition is analyzed for ITER plasma facing components, with scrape-off layer (SOL) plasma convective radial transport and non-convective (diffusion-only) transport. The analysis uses the UEDGE and DEGAS codes to compute plasma SOL profiles and ion and neutral fluxes to the wall, TRIM-SP code to compute sputter yields, and REDEP/WBC code package for 3-D kinetic modeling o...

Abastract:: Female albino rats were administered beryllium nitrate at doses of 1mg/kg i.p. once a day for 90 consecutive days followed by combination therapy of Aloe vera (150mg/kg p.o.) with piperine (2.5mg/kg p.o.) and Moringa oleifera root extract (150mg/kg p.o.) with curcumin (5mg/ kg p.o.) once a day for last 15 days to encounter the characteristic blood biochemical alterations. Exposure o...

Beryllium was released into the air from routine operations and three accidental fires at the Rocky Flats Plant (RFP) in Colorado from 1958 to 1989. We evaluated environmental monitoring data and developed estimates of airborne concentrations and their uncertainties and calculated lifetime cancer risks and risks of chronic beryllium disease to hypothetical receptors. This article discusses expo...

Gaseous beryllium metaborate, Be(B02)2,has been identified mass spectrometrically in the vapor above the beryllium-boron-oxygen system. A st-jdy of this system by differential thermal analysis» and Knudsen effusion using a vacuum balance and mass spectrometer, showt-i solid DeoBo0, to be the only condensed mixed oxide phase present with a melting point of 1495 ± 5C. The following thermodynamic ...

There is controversy on whether occupational exposure to beryllium causes lung cancer. We conducted a systematic review of epidemiologic studies on cancer among workers exposed to beryllium, including a study of seven U.S. production plants which has been recently updated, a study of patients with beryllium disease (largely overlapping with the former study) and several smaller studies. A small...