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Gas permeation and preconcentration in the flow-injection determination of acid-available cyanide in waste water

✍ Scribed by Vlastimil Kubán̆

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
748 KB
Volume
259
Category
Article
ISSN
0003-2670

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✦ Synopsis

The determmatlon of cyanide based on the reaction Hrlth highly selective sodium Isomcotmate-3-methyl-lphenyl-2-pyrazolm-S-one was optlmlzed and compared with other spectrophotometnc methods based on Komg's reaction A reaction mechanism IS proposed The method, based on the formation of an mtermedlate product, allows a fast and highly sensitive determmatlon of cyamde ions at concentrations from umts to hundreds of fig 1-l The samphng frequency 1s 20 h-' and the detectlon hmlt IS 3 kg I-' when 2 0 ml of sample are used Most Interferences, mcludmg those of CNS-, are ehmmated by dlscrlmmatlon of mass transport through a non-porous slhcone-rubber membrane

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