GB/T 14637-2021 Active National standards

GB/T 14637-2021 Determination of copper,iron and zinc in industrial circulating cooling water and scale—Atomic absorption spectrometric method

Publish Date: 2021-08-20 Implement Date: 2022-03-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 14637-2021

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods for water treatment agents

ICS Name: Chemical analysis

Publish Date: 2021-08-20

Implement Date: 2022-03-01

Pages: 10 pages

Scope

This document specifies the determination method of copper, iron, and zinc content in industrial circulating cooling water and the scale in boiler water systems or circulating water systems using atomic absorption spectrometry. This document is applicable to the determination of copper content in industrial circulating cooling water ranging from 0.1 mg/L to 20 mg/L, iron content ranging from 0.1 mg/L to 20 mg/L, and zinc content ranging from 0.1 mg/L to 20 mg/L. It is also applicable to the determination of copper, iron, and zinc content in scale, with copper content ≥ 0.005%, iron content ≥ 0.01%, and zinc content ≥ 0.005%. This document is also applicable to the determination of copper, iron, and zinc content in boiler water and other industrial water, raw water, and scale in water systems, as well as the determination of zinc content in phosphorus-zinc pre-coating solutions used in industrial circulating cooling water.