Cyanide refers to all of the CN groups in cyanide-compounds that can be determined as the cyanide ion CN . In most natural waters the molecular HCN form predominates. In solutions of metal cyanides, the CN group may also be present as a complex of varying stability. Cyanides are extensively used for extraction of silver/gold ores, metal-cleaning and electroplating baths, coke ovens and other chemical processes. There are mainly two chemical treatments to remove cyanides from waste-waters: one is chlorination and the other is the alkaline method.
Cyanides react with the pyridine-pyrazolone reagent to form a blue complex in neutral buffered solution. The absorbance of this colored product is proportional to the concentration of cyanide present in the aqueous sample.
Order Information:
HI 3855 test kit comes with 17 g cyanide reagent A, 100 packets cyanide reagent B, 100 packets cyanide reagent C, checker disc, glass vials with caps, 3 mL plastic pipette and spoon.
- Specifications
Method | Checker Disc | |
Range | 0.00-0.30 mg/L | |
Smallest Increment | 0.01 mg/L | |
Chemical Method | Pyride-pyrazolone | |
Number of Tests | 100 | |
Weight | 580 g |
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