HY/T 0347-2022Determination of seawater trace ammonium - Flow analysis, solid phase extraction and o-phthaldialdehyde fluorescence detection (English PDF)

HY/T 0347-2022 (Determination of seawater trace ammonium - Flow analysis, solid phase extraction and o-phthaldialdehyde fluorescence detection) is available as an English-translated PDF.

HY/T 0347-2022 — This document describes the method principle, Analysis steps and result calculation and recording, specifying interference and elimination, reagents and materials, instruments and equipment, sample collection and storage, result calculation Technical requirements related to records, precision and accuracy, quality assurance and quality control, etc. This document applies to the determination of trace ammonium salts in nanomole per liter (nmol/L) level in seawater.

When the sample enrichment volume is 10mL, the the detection limit of the method was 9nmol/L, and the lower limit of determination was 15nmol/L.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 10 pages — is available in the English PDF.

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