|
Material Database:
ERM-EC681m - Polyethylene (high level)
| |
|
| Type |
Certified reference material |
| Producer |
JRC - Joint Research Centre
|
| Status |
Available |
| Material |
Powder |
| Reference |
ERM-EC681m |
| Catalog (Web) |
https://crm.jrc.ec.europa.eu/p/q/ERM-EC681K+/ERM-EC681m-PO
LYETHYLENE-elements-high-level/ERM-EC681m |
| |
|
Description
|
An LDPE material containing certain elements was prepared from commercially sourced low-density polyethylene and organic and inorganic pigments.
The material was extruded, mixed and filled into bottles.
Between-bottle homogeneity was quantified and stability during dispatch and storage were assessed following ISO Guide 35:2006. The within-unit
homogeneity was quantified to determine the minimum sample intake.
The material was characterised by an intercomparison among laboratories of demonstrated competence and adhering to ISO/IEC 17025. Technically
invalid results were removed but no outlier was eliminated on statistical grounds only.
Uncertainties of the certified values were calculated in compliance with the Guide to the Expression of Uncertainty in Measurement (GUM) and include
uncertainties related to possible inhomogeneity, instability and characterisation.
The material is intended for the quality control and/or assessment of method performance. As any reference material, it can also be used for control
charts, validation studies or calibration of methods.The minimum amount of sample to be used is 150 mg for the determination of Cl and 60 mg for the determination of all other elements. keywords: Industrial material, Polymers, Trace elements, Heavy metals
|
Package |
The CRM is available in glass bottles containing 100 g of polyethylene granulate.
|
Parameter
|
| Analyte | Antimony | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 86 ± 7 | |
| Analyte | Arsenic | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 17.0 ± 1.1 | |
| Analyte | Bromine | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 1.43 ± 0.08 | |
| Analyte | Cadmium | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 146 ± 5 | |
| Analyte | Chlorine | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 0.38 ± 0.06 | |
| Analyte | Chromium | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 45.1 ± 1.9 | |
| Analyte | Mercury | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 9.9 ± 0.8 | |
| Analyte | Sulfur | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 0.64 ± 0.10 | |
| Analyte | Tin | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 99 ± 6 | |
| Analyte | Zinc | | Specification | total element concentration | | Parameter | Certified value | | Unit | mg/kg | | Result | 1.17 ± 0.04 | |
|
|
