Determination of dissolved organic carbon and total dissolved nitrogen in seawater using High Temperature Combustion Analysis

This document describes best practices for analysis of dissolved organic matter (dissolved carbon and total nitrogen) in seawater samples. Included are SOPs sample collection storage, details laboratory using high temperature combustion on Shimadzu TOC analyzers, suggestions quality control assurance. Although written specifically GO-SHIP oceanographic community practices, many aspects processing relevant to DOM determination across oceanic regimes this aims provide updated methodology the wider marine community.