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Material Database:
BCR-287 - Thermally refined Lead
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| Type |
Certified reference material |
| Producer |
JRC - Joint Research Centre
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| Status |
Available |
| Material |
Solid |
| Reference |
BCR-287 |
| Catalog (Web) |
https://irmm.jrc.ec.europa.eu/rmcatalogue/detailsrmcatalog
ue.do?referenceMaterial=0287A%2B%2B%2B%2B%2B%2B%2B |
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Description
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Thermally refined lead was melted in an iron crucible placed in a gas-fired furnace. It was homogenised by means of a mechanical agitator. The temperature before casting was adjusted to 370 °C. When the metal bath was ready and its surface was cleaned from any slag by a scraper, it was poured quickly on a mould preheated to 350 °C.
The mould consisted of a heavy steel plate 10 mm thick welded on a rigid beam structure to resist against possible distortions during casting. The mould was 2000 x 1500 mm and the sides 50 mm high.
About 20 seconds after casting, the mould was cooled on its bottom face by an intense water spray. About half a minute Later, when the surface of the cast metal became solid it was sprayed with atomized water, and after another half minute, water was poured on it. The total cast and solidification time was approximately 1 minute and 30 seconds. The thickness of the solidified metal was 18 to 20 mm.
Each plate was cut as follows :
The outside band 70 mm wide was discarded all around the plate. The restwas
sawed into square specimens 70 x 70 mm. This produced a total of 450 specimens for each metal.
Square samples from the periphery were used to produce chips; those from the central part of the plates form the batch of square samples for sale. |
Package |
The material is available in two forms : square blocks (e.g. for emission spectrometry or X-ray fluorescence) and chips for wet chemical methods.
BCR-286A: 600g, square block BCR-286B: 160g, chips |
Parameter
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| Analyte | Antimony | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 0.040 ± 0.015 | |
| Analyte | Bismuth | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 67.3 ± 1.1 | |
| Analyte | Cadmium | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 0.356 ± 0.024 | |
| Analyte | Copper | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 0.98 ± 0.05 | |
| Analyte | Silver | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 15.20 ± 0.21 | |
| Analyte | Thallium | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 0.73 ± 0.04 | |
| Analyte | Tin | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | <0.05 | |
| Analyte | Zinc | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | <0.1 | |
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