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RECORD NUMBER: 381 OF 613

Main Title Method Kelada-01: Kelada Automated Test Methods for Total Cyanide, Acid Dissociable Cyanide, and Thiocyanate. Revision 1.2.
CORP Author Environmental Protection Agency, Washington, DC. Office of Water.
Publisher Aug 2001
Year Published 2001
Report Number EPA/821/B-01/009;
Stock Number PB2001-108275
Additional Subjects Cyanides ; Water pollution sampling ; Thiocyanate content ; Test methods ; Quartz coils ; Foreign technology ; Kelada-01 ; On-line ultraviolet radiation ; Flash distillation ; On-line colorimeter
Holdings
Library Call Number Additional Info Location Last
Modified		 Checkout
Status
NTIS  PB2001-108275 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 44p
Abstract
Kelada-01 provides for rapid determination of total cyanide, acid dissociable cyanide, and thiocyanate in drinking water, wastewater, ambient water, and sludge, with minimal effects from interferences. Kelada-01 was developed by Dr. Nabih Kelada, and represents the culmination of years of cyanide chemistry research. The method uses a combined on-line ultraviolet (UV) irradiation and flash distillation system in place of classical manual cyanide distillation procedures to determine total cyanide. Under irradiation in a glass coil, strongly-bound complex cyanides (excluding thiocyanate) break down into free cyanide, which is separated from the sample matrix by distillation and is detected using an on-line colorimeter. By omitting UV-irradiation, acid dissociable cyanide complexes are broken down and determined. By replacing the glass irradiation coil with a quartz coil, thiocyanate can be determined.