|
Material Database:
NIES CRM 30: Gobi Kosa Dust
| |
|
| Type |
Certified reference material |
| Producer |
National Institute for Environmental Studies (NIES)
|
| Status |
Available |
| Material |
Powder |
| Reference |
NIES CRM 30 |
| Catalog (Web) |
https://www.nies.go.jp/labo/crm-e/index.html |
| |
|
Description
|
This environmental certified reference material (CRM) was developed and certified by the National Institute for Environmental Studies (NIES) for the determination of multi-elements in Asian mineral dust (kosa dust) originating from arid areas of the Gobi Desert in north-east Asia, and in materials of similar matrix. This CRM was produced from surface soil collected at four sampling sites (around 44°N, 109°E) in the south-western Gobi Desert in May 2011. Dust and sandstorms occur frequently in this area each spring. The collected surface soil (1200 kg) was fractionated in a controlled dust generation chamber, using a cyclone-type classification apparatus and the fine dust particles (<10 µm diameter) were collected. This material (about 2 kg) was further refined and homogenized to yield 1.2 kg suitable for the CRM. The final dust was placed in amber glass bottled (2 g in each bottle, 500 bottles), and sterilized by 60Co irradiation (25 kGy).
keywords: Environmental material, Particulate matter, Soil/Sediment, Trace elements, Heavy metals |
Package |
2 g powder in amber glass bottle |
Parameter
|
| Analyte | Aluminum | | Specification | total element mass fraction | | Parameter | Certified value | | Unit | % | | Result | 7.58 ± 0.42 | |
| Analyte | Barium | | Specification | total element mass fraction | | Parameter | Certified value | | Unit | mg/kg | | Result | 535 ± 31 | |
| Analyte | Calcium | | Specification | total element mass fraction | | Parameter | Certified value | | Unit | % | | Result | 4.25 ± 0.35 | |
| Analyte | Iron | | Specification | total element mass fraction | | Parameter | Certified value | | Unit | % | | Result | 3.84 ± 0.35 | |
| Analyte | Magnesium | | Specification | total element mass fraction | | Parameter | Certified value | | Unit | % | | Result | 1.51 ± 0.13 | |
| Analyte | Manganese | | Specification | total element mass fraction | | Parameter | Certified value | | Unit | mg/kg | | Result | 768 ± 83 | |
| Analyte | Potassium | | Specification | total element mass fraction | | Parameter | Certified value | | Unit | % | | Result | 2.13 ± 0.11 | |
| Analyte | Sodium | | Specification | total element mass fraction | | Parameter | Certified value | | Unit | % | | Result | 0.939 ± 0.071 | |
| Analyte | Strontium | | Specification | total element mass fraction | | Parameter | Certified value | | Unit | mg/kg | | Result | 250 ± 20 | |
| Analyte | Titanium | | Specification | total element mass fraction | | Parameter | Certified value | | Unit | % | | Result | 0.426 ± 0.040 | |
| Analyte | Zinc | | Specification | total element mass fraction | | Parameter | Certified value | | Unit | mg/kg | | Result | 93.1 ± 8.5 | |
|
Related Links
|
EVISA Link page: All about certified reference materials (CRMs)
|
|
