HY/T 0346-2022 Active Industry standards-The ocean

HY/T 0346-2022 Determination of seawater trace nitrate—Flow analysis,cadmium reduction,diazotization and spectrophotometric detection with a long path length flow cell

Publish Date: 2022-09-26 Implement Date: 2023-01-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: HY/T 0346-2022

Standard Type: Industry standards

Standard Status: Active

is_force_gb: no

CCS Name: Oceanography

ICS Name: Geology, meteorology, and hydrology

Publish Date: 2022-09-26

Implement Date: 2023-01-01

Publisher: 中华人民共和国自然资源部

Technical Committee: 全国海洋标准化技术委员会(SAC/TC 283)

Pages: 16 pages

Scope

本文件描述了流动分析-镉柱还原-重氮偶联-长光程分光光度法测定海水中痕量硝酸盐的方法原理、分析步骤和结果计算与记录，规定了试剂与材料、仪器和设备、样品采集与保存、精密度和准确度、质量保证和质量控制等的技术要求。
本文件适用于海水中纳摩尔每升（nmol/L）级别的痕量硝酸盐的测定。本方法的检出限为6 nmol/L，测定下限为10 nmol/L。