DETERMINATION OF IRON, CHROMIUM, COBALT, NICKEL, AND SCANDIUM IN ASBESTOS BY NEUTRON ACTIVATION ANALYSIS
Holmes, A; Morgan, A; Sandalls, FJ
| HERO ID | 1865736 |
|---|---|
| In Press | No |
| Year | 1971 |
| Title | DETERMINATION OF IRON, CHROMIUM, COBALT, NICKEL, AND SCANDIUM IN ASBESTOS BY NEUTRON ACTIVATION ANALYSIS |
| Authors | Holmes, A; Morgan, A; Sandalls, FJ |
| Journal | American Industrial Hygiene Association Journal |
| Volume | 32 |
| Issue | 5 |
| Page Numbers | 281 |
| Abstract | A method was developed to analyze metals in asbestos (1332214) samples by neutron activation. Samples of asbestos were dried at 100 degrees-C, cooled, and 100 milligram portions were sealed in silica ampules. Standards were also prepared in silica ampules, and both samples and standards were placed in aluminum cans. They were irradiated, weighed, sintered with sodium-peroxide, and dissolved in hydrochloric-acid. Chemical separation was carried out by means of hydroxide precipitation followed by anion exchange, and their radiation products were eluted. A gamma ray spectrometer was also used as a comparison to determine if the standards prepared by milling were different from the standard reference samples. The metals determined were chromium (7440473) (Cr), nickel (7440020), cobalt (7440484) (Co), iron (7439896) (Fe) and scandium (7440202) (Sc). No significant differences were detected in the milled and nonmilled standards. Several types of asbestos, Canadian chrysolite (12001295) and crocidolite (12001284) samples were analyzed using this method. The chrysolite samples had concentrations ranging from 1.8 to 5.0 percent Fe, 120 to 1200 parts per million (ppm) Cr, 39 to 110ppm Co, 550 to 2600ppm Ni, and 4.1 to 12.0ppm Sc. The African crocidolite samples had concentrations ranging from 20 to 26 percent Fe, 0.4 to 0.9ppm Co, and 0.04 to 0.6ppm Sc. The Cr content was less than 20ppm, and the Ni content was less than 100ppm. The authors conclude that these metals can be determined in asbestos samples with good sensitivity by neutron activation. |
| Doi | 10.1080/0002889718506461 |
| Pmid | 5087573 |
| Wosid | WOS:A1971J369000001 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Journal: AMER IND HYG ASS J ISSN: |
| Is Public | Yes |
| Language Text | English |
| Keyword | Trace Elements; Chromium; 0R0008Q3JB; Asbestos; 1332-21-4; 3G0H8C9362; 7OV03QG267; E1UOL152H7; Scandium; YUJ4U1EW7R; Index Medicus; Mesothelioma -- etiology; Activation Analysis; Trace Elements -- analysis; Finland; Spectrometry, Gamma; South Africa; Zimbabwe; Asbestosis -- complications; Pleural Neoplasms -- etiology; Asbestos -- analysis; Cobalt -- analysis; Chromium -- analysis; Nickel -- analysis; Iron -- analysis; Scandium -- analysis |