GB/T 12149-2007 Replaced National standards

GB/T 12149-2007 Water for industrial circulating cooling system and boiler—Determination of silica

Publish Date: 2007-08-13 Implement Date: 2008-02-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 12149-2007

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

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

ICS Name: Chemical analysis

Publish Date: 2007-08-13

Implement Date: 2008-02-01

Pages: 8 pages

Scope

This standard specifies the determination methods for the silicon content in industrial circulating cooling water, boiler water, and natural water. In this standard, the spectrophotometry method is applicable to the determination of soluble silicon content in industrial circulating cooling water ranging from 0.1 mg/L to 5 mg/L; the silicate analyzer method is applicable to the determination of silicon content in boiler water such as chemically desalinated water, boiler feedwater, steam, and condensate water ranging from 0 to 50μg/L; the gravimetric method is applicable to the determination of silicon content in industrial circulating cooling water and natural water exceeding 5 mg/L; and the hydrofluoric acid conversion spectrophotometry method is applicable to the determination of total silicon content in natural water ranging from 0.5 mg/L to 5 mg/L.