High-precision determination of nitrite, nitrate, phosphate, and silicate for the characterization of MOOS-4 certified reference material for nutrients in seawater.

ABSTRACT: High-precision determination of inorganic nutrients (i.e., nitrite, nitrate, phosphate, and silicate) in seawater is paramount for understanding variations in marine biogeochemical cycles. Historically, the lack of consistency between nutrient data sets has been the Achilles' heel for large-scale oceanographic studies and the regular use of certified reference materials (CRMs) was identified as a solution to improve data quality. In this study, the preparation and certification of NRC MOOS-4 nearshore seawater CRM for nutrients are presented. The discussion is focused on the optimization of the analytical methods that were developed in decade-long research. On the one hand, the classical spectrophotometric methods were studied with attention to potential systematic biases not normally cons

SUBMITTER: Pagliano E 

PROVIDER: S-EPMC12276123 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature