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Category Text Publication
Reference Category Journals
DOI 10.1007/s00769-006-0205-x
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Title (Primary) Test for non-linearity concerning linear calibrated chemical measurements
Author Brüggemann, L.; Quapp, W.; Wennrich, R.
Source Titel Accreditation and Quality Assurance
Year 2006
Department ANA; SANA
Volume 11
Issue 12
Page From 625
Page To 631
Language englisch
Keywords Linear calibration; Non-linearity
Abstract Linear calibrated chemical measurements are based on the assumption of linearity. Due to influences of matrices at real samples the condition of linearity can be violated. Therefore, a profound examination has to attach much importance on the linearity of calibration. However, different procedures have been applied for this purpose in literature. In order to examine linear calibration for non-linearity, a recently presented procedure is compared with conventional techniques. The associated statistical models and estimations are represented. The applicability of the different procedures is demonstrated in some practical examples, the determination of arsenic in surface water samples taken from different sites in abandoned mining areas in central Germany. Recommendations for using the indicators and tests of non-linearity are given.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=2553
Brüggemann, L., Quapp, W., Wennrich, R. (2006):
Test for non-linearity concerning linear calibrated chemical measurements
Accredit. Qual. Assur. 11 (12), 625 - 631 10.1007/s00769-006-0205-x