Stability assessment of density reference liquids supported by GC-MS analysis (density reference liquids stability supported by GC-MS)
Lorefice, S; di Meane, EA; Sega, M
| HERO ID | 2128157 |
|---|---|
| In Press | No |
| Year | 2010 |
| Title | Stability assessment of density reference liquids supported by GC-MS analysis (density reference liquids stability supported by GC-MS) |
| Authors | Lorefice, S; di Meane, EA; Sega, M |
| Journal | Measurement |
| Volume | 43 |
| Issue | 5 |
| Page Numbers | 637-644 |
| Abstract | Density measurements are frequently associated to specific requirements to evaluate the quality of a process or to determine mass and/or volume of the material. Certified reference liquids can be used to assure metrological traceability of density measurements to the SI with uncertainty lower than 0.005%. This paper presents the new approach of INRIM to set density standards. The procedure involved accurate density determinations of some reference liquids which were supported by gas-chromatography coupled with mass spectrometry (GC-MS) in order to assess their homogeneity and short-term stability. GC-MS analyses on tetrachloroethylene and trichloroethylene were carried out before and after density measurements. Samples that had undergone to variations in density value showed also different gas-chromatographic profiles. In the same time, samples that had not undergone to density variations kept similar gas-chromatographic profiles. The results support the approach of combining independent methods in order to set physico-chemical properties of reference materials. |
| Doi | 10.1016/j.measurement.2010.01.005 |
| Wosid | WOS:000277953400004 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Journal:Measurement: Journal of the International Measurement Confederation ISSN:0263-2241 |
| Is Public | Yes |
| Keyword | Density; Reference liquids; Mass spectrometry |