Standard No.:	SL 83-1994
Chinese Name:	碱度(总碱度、重碳酸盐和碳酸盐)的测定(酸滴定法)
English Name:	Determination of alkalinity、bicarbonate and carbonate (Acid titration method)
Professional Classification:	SL Professional Standard - Water Resources
Issued by:
Issued on:	1995-05-01
Implemented on:	1995-05-01
Status:	VALID
Target Language:	English
File Format:	PDF
Word Count:	1500 words
Translation Price:	45 (USD)
Delivery:	via email in 1-3 business day

1.1 Subject content
This standard specifies the acid titration method used for determining the total alkalinity, bicarbonate and carbonate in water.
1.2 Application scope
This method is applicable to the generally non-turbid and low-chromatic surface water. The calculation for bicarbonate and carbonate is only applicable to that for water sample containing only hydroxide, bicarbonate and carbonate.
1.3 Interference and elimination
Determination will be interfered if water sample is turbid and colored, then the determination shall be carried out with potentiometric titration method. Oxide that can fade the indicator will also interfere the determination. If the residual chlorine in water sample damages the indicator, 1~2 drops of sodium thiosulfate shall be added to eliminate the residual chlorine.