| Statistical evaluation of an analytical IC method for the determination of trace level perchlorate. | |
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MedLine Citation:
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PMID: 16403549 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Trace level perchlorate analysis in water initiated a new development in the Ion Chromatography (IC) technology. Maintenance of a low detection limit may be highly affected by the operating conditions of the IC system. In this paper the homoscedasticity of the IC system within the calibration concentration range, the effect of the system drift on the calibration curve and the effect of the self regeneration suppressor (SRS) current on the detection limit were investigated. The experimental results were evaluated by statistical methods such as the Cochran test and the lack of fit test. The detection limits were obtained by two ways. One through method detection limit (MDL) and the other through detection limit from the calibration curve (DTC). The Cochran test results revealed the homoscedasticity of the IC system. The effect of system drift on the calibration curve was noticed by the lack of fit test. MDL yielded a lower but less reliable detection limit than DTC. An acceptable detection limit can be achieved under the lower SRS current (100 mA). |
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Authors:
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He Huang; George A Sorial |
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Publication Detail:
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Type: Journal Article Date: 2006-01-05 |
Journal Detail:
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Title: Chemosphere Volume: 64 ISSN: 0045-6535 ISO Abbreviation: Chemosphere Publication Date: 2006 Aug |
Date Detail:
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Created Date: 2006-07-24 Completed Date: 2006-10-26 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0320657 Medline TA: Chemosphere Country: England |
Other Details:
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Languages: eng Pagination: 1150-6 Citation Subset: IM |
Affiliation:
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Department of Civil and Environmental Engineering, University of Cincinnati, 765 Baldwin Hall, 2624 Clifton Ave., Cincinnati, OH 45221-0071, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Chromatography
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methods Data Interpretation, Statistical Environmental Monitoring / statistics & numerical data* Perchloric Acid / analysis* Water Pollutants, Chemical / analysis* |
| Chemical | |
Reg. No./Substance:
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0/Water Pollutants, Chemical; 0/perchlorate; 7601-90-3/Perchloric Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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