= Standard addition in the IUPAC Gold Book
https://goldbook.iupac.org/terms/view/08030
IUPAC Gold Book fifth edition, entry 08030, measurement procedure with standard addition, DOI 10.1351/goldbook.08030. Definition and Note: compare sample indications with indications after measurement-standard additions; unbiased under a multiplicative matrix effect. Origin: Metrological and quality concepts in analytical chemistry, IUPAC Recommendations 2021, printed p. 1012. Official indexed definition verified; direct page reader returned access denial.
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