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Discussion on the Internal-Calibration Method for the Flow Injection Nutrient Analyzer
Pages: 71-75
Year: Issue:  2
Journal: Ocean Technology

Keyword:  nutrient analyzerinternal-calibration methodmeasurement traceability;
Abstract: Currently, flow injection nutrient analyzers are widely and increasingly applied, but no verification regulation has been issued for this situation. In this paper, the internal-calibration method for the analyzer is discussed and the necessity for instrument calibration is expounded. Especially, this paper presents the calibration parameters for the analyzer, including accuracy, precision, detection limit, measuring range, checking of the calibration curve, and comparative testing by national standard methods. The determination methods of calibration parameters are discussed, with their traceability analyzed in an in-depth way. The method proposed in this paper has been applied in the third party inspection of the "automatic nutrient analyzer", a research product of the program "fast on-site monitoring and detecting techniques for red tides"(2007AA092001) in the National High Technology Research and Development Program of China(Project 863).
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