2016
DOI: 10.5942/jawwa.2016.108.0006
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Reliable Determination of Cyanide in Treated Water

Abstract: Reliable determination of cyanide in water samples is important for both wastewater and drinking water treatment plant operators and regulatory agencies. However, as a result of cyanide's diverse chemistry, obtaining reliable results has been challenging because several chemical mechanisms can form or destroy cyanide—and some of these can occur within the sample container or during laboratory pretreatment and analysis, leading to biased results. Also, sample matrix constituents or preservation chemicals can in… Show more

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Cited by 4 publications
(5 citation statements)
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“…From a scientific perspective, the solution to avoiding false positives is to avoid the conditions that cause them. On the basis of this study and a previous study (Delaney & Blodget 2016a), the authors recommend field dilutions to reduce the matrix interference, elimination of NaOH preservation, same‐day analysis, and the use of a field spike to demonstrate sample integrity.…”
Section: Discussionmentioning
confidence: 87%
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“…From a scientific perspective, the solution to avoiding false positives is to avoid the conditions that cause them. On the basis of this study and a previous study (Delaney & Blodget 2016a), the authors recommend field dilutions to reduce the matrix interference, elimination of NaOH preservation, same‐day analysis, and the use of a field spike to demonstrate sample integrity.…”
Section: Discussionmentioning
confidence: 87%
“…While the authors cannot unequivocally state that FCN is being detected in this study, the FIA method used is highly selective. Previous investigations using the automated spectrophotometric TCN and ion‐selective electrode FCN analyses lend credence that FCN is being detected (Delaney & Blodget 2016a). While it is possible that these results could be due to an unexpected interference, the issue of false detection remains because the samples have no detectable cyanide at the start, and the preservation and testing are performed according to method requirements.…”
Section: Discussionmentioning
confidence: 87%
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