Standard No.:	GB/T 14424-2008
English Name:	Industrial circulating cooling water-Determination of residual chlorine
Chinese Name:	工业循环冷却水中余氯的测定
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:	2008-04-01
Implemented on:	2008-9-1
Status:	valid
Superseding:	GB/T 14424-1993 Analysis of water used in boiler and cooling system－Determination of free chlorine residuals
Language:	English
File Format:	PDF
Word Count:	4000 words
Price(USD):	120.00
Delivery:	via email in 1~3 business day

本标准规定了工业循环冷却水中余氯、游离氯的测定方法。本标准适用于原水和工业循环冷却水中余氯、游离氯的分析，测定范围为0.03mg/L~2.5mg/L。 本标准代替ＧＢ／Ｔ１４４２４—１９９３《锅炉用水和冷却水分析方法　余氯的测定》。
本标准与ＧＢ／Ｔ１４４２４—１９９３相比，主要变化如下：
———标准名称由原来的“锅炉用水和冷却水分析方法　余氯的测定”改为“工业循环冷却水中余氯的测定”；
———取消了ＧＢ／Ｔ１４４２４—１９９３的ＤＰＤ 目视比色法和邻联甲苯胺目视比色法；
———范围由ＧＢ／Ｔ１４４２４—１９９３规定的０．１０ｍｇ／Ｌ～１．５０ｍｇ／Ｌ 扩大为０．０３ｍｇ／Ｌ～２．５０ｍｇ／Ｌ。