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Whats the principle of the in-line cyanide distillation?

April 26, 2017cyanide distillation In-Line Principle

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Whats the principle of the in-line cyanide distillation?

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Using the In-Line Sample Preparation Module, a liquid sample is mixed with KHP, zinc sulfate buffer at 115°C. The HCN(gas) from the sample matrix crosses a gas permeable membrane, and it is trapped into sodium hydroxide. The CN- is then determined colorimetrically using the pyridine-barbituric acid chemistry at 570 nm. Both standards and samples are distilled in-line.