TY - CONF A1 - Kramer, Claus A1 - Ried, Peter A1 - Mahn, Stefan A1 - Richter, Silke A1 - Langhammer, Nicole A1 - Kipphardt, Heinrich T1 - Aufbau und Anwendung einer universellen Gaskalibration zur Nichtmetallbestimmung mittels Trägergasheißextraktion T2 - ANAKON 2015 CY - Graz, Österreich DA - 2015-03-23 PY - 2015 AN - OPUS4-32864 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kramer, Claus A1 - Ried, Peter A1 - Mahn, Stefan A1 - Richter, Silke A1 - Langhammer, Nicole A1 - Kipphardt, Heinrich T1 - Design and application of a versatile gas calibration for non-metal determination by carrier gas hot extraction N2 - In carrier gas hot extraction the calibration of low amounts of non-metals with masses of a few micrograms with small uncertainty remains a challenge. To achieve high flexibility a high precision gas mixture pump was combined with an automated syringe drive. The gas mixing pump allows filling the syringe with different gas compositions; the automated syringe drive allows matching to modulate the signal profiles to those of real samples. The system was designed and its experimental potential explored. The resulting calibration curves were comparable to those obtained by calibration using solid materials of sufficient purity and stoichiometry. However smaller uncertainties and lower limits of quantification (i.e. 0.5 µg and 0.6 µg for O and N, respectively) were found using the gas calibration device. KW - Non-metal determination KW - CGHE KW - Gas calibration PY - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:b43-336130 SN - 1759-9660 SN - 1759-9679 VL - 7 IS - 13 SP - 5468 EP - 5475 PB - RSC Publ. CY - Cambridge AN - OPUS4-33613 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -