Determination of soluble cyanide in soil samples by differential pulse polarography

✍ Scribed by S.B. Adeloju; K.M. Gawne

• Book ID: 104100388
• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 415 KB
• Volume: 188
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(00)86052-3

✦ Synopsis

Soluble cyanide can be determined in soil samples by differential pulse polarography. Interference from sulphide is avoided by treating the alkali-stabilized sample solutions with lead carbonate prior to distillation of cyanide from the soil extract. Less than 10 pg 1-l cyanide can be determined accurately, depending on the weight of sample taken and the final collection volume. For a 100-g soil sample, the detection limit is 5 ng g-', which is similar to the limit of a standard spectrophotometric method. Relative standard deviations are l-3%.