Standard No.:	GB/T 12149-2007
English Name:	Water for industrial circulating cooling system and boiler—Determination of silica
Chinese Name:	工业循环冷却水和锅炉用水中硅的测定
Chinese Classification:	G76    Basic standards and general methods for water treatment agent
Professional Classification:	GB    National Standard
ICS Classification:	71.040.40 71.040.40    Chemical analysis 71.040.40
Issued by:	AQSIQ; SAC
Issued on:	2007-10-17
Implemented on:	2008-2-1
Status:	superseded
Superseded by:	GB/T 12149-2017 Determination of silica in water for industrial circulating cooling system and boiler
Superseded on:	2018-4-1
Abolished on:	2018-04-01
Superseding:	GB/T 12150-1989 Analysis of water used in boiler and cooling system-The determination of silica(photometric method by silicomolybdenum blue) GB/T 16633-1996 Industrial circulating cooling water--Determination of silica--Spectrophotometric method GB/T 14417-1993 Analysis of water used in boiler and cooling system. Determination of total silica GB/T 12149-1989 Analysis of water used in boiler and cooling system--Determination of silica--Molybdenum blue colorimetry
Language:	English
File Format:	PDF
Word Count:	4000 words
Price(USD):	120.0
Delivery:	via email in 1~3 business day

本标准规定了工业循环冷却水、锅炉用水及天然水中硅含量的测定方法。
本标准中分光光度法适用于工业循环冷却水中可溶性硅含量为0.1mg/L～5mg/L的测定；硅酸根分析仪法适用于化学除盐水、锅炉给水、蒸汽、凝结水等锅炉用水中硅含量为0～50μg/L的测定；重量法适用于工业循环冷却水及天然水中硅含量＞5mg/L的测定；氢氟酸转化分光光度法适用于天然水中全硅含量为0.5mg/L～5mg/L的测定。