A flow injection (FI) preconcentration system has been coupled with a direct sample insertion (DSI) system for inductively coupled plasma atomic emission spectrometry (ICP-AES). The FI system developed uses an ion exchange microcolumn to provide preconcentration factors of approximately for several metals. Improved DSI detection limits are obtained by employing a graphite sample probe of reduced mass. The improvements are element specific and range between 10 and 130. The combination of the two optimized systems results in overall detection limit improvements ranging between 140 and 1200 for the elements tested, Cu, Pb and Zn. Precision of the FI-DSI-ICP system averages 4% rsd for these three elements. The flow injection system is fully automated and under computer control, resulting in a reproducible FI processing time of 6.0 minutes, using 5 mL injection volumes. The system offers considerably potential for further gains in performance, by increasing the injection volumes used and optimizing the interface.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.60721 |
| Date | January 1991 |
| Creators | Moss, Pamela A. (Pamela Anne) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science (Department of Chemistry.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001275125, proquestno: AAIMM74581, Theses scanned by UMI/ProQuest. |
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