Headspace sorptive solid phase microextraction (HS-SPME) combined with a spectrophotometry system: A simple glass devise for extraction and simultaneous determination of cyanide and thiocyanate in environmental and biological samples

Al-Saidi, Hamed M.; Al‐Harbi, Sami A.; Aljuhani, Enas; El-Shahawi, M.S.

doi:10.1016/j.talanta.2016.06.019

Cited by 20 publications

(3 citation statements)

References 36 publications

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“…Among the available methods for thiocyanate enrichment, solidphase extraction techniques have mostly been studied. Al-Saidi et al [6] established a headspace sorptive solid-phase microextraction (HS-SPME) technique for the extraction of thiocyanate and cyanide. Under the optimized conditions, the LOD and LOQ were 0.34 and 1.2 mmol/L, respectively.…”

Section: Introductionmentioning

confidence: 99%

Aqueous Two-Phase System–Ion Chromatography for Determination of Thiocyanate in Raw Milk

Jiang

Zhong

et al. 2021

Separations

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Thiocyanate could effectively inhibit bacteria in milk and extend the shelf life of milk. However, excessive addition will lead to health risks. Therefore, the determination of thiocyanate in raw milk has received a lot of attention, but the determination could be interfered with by other components in raw milk and the pre-treatment of raw milk is complex. In this study, a new pretreatment method combined with ion chromatography (IC) for rapid and sensitive determination of thiocyanate is proposed. An acetonitrile/(NH4)2SO4 aqueous two-phase system (ATPS) was developed for the separation and enrichment of thiocyanate in raw milk. Response surface methodology was performed to optimize the extraction conditions and an efficient pretreatment were obtained using ATPS composed of 42% acetonitrile (w/w) and 16% (NH4)2SO4 (w/w), with the pH 4.7, and the recovery of thiocyanate reached 107.24 ± 0.5%, and the enrichment ratio was 10.74 ± 0.03. IC was used to establish a thiocyanate enrichment method. The linear range was from 0.05 to 15 mg/L and R2 = 0.998, the limit of detection (LOD) was 0.2 μg/L, the limit of quantification (LQD) was 0.6 μg/L. Hence, it is feasible to combine ATPS with IC for the enrichment and determination of thiocyanate in raw milk.

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Section: Introductionmentioning

confidence: 99%

Aqueous Two-Phase System–Ion Chromatography for Determination of Thiocyanate in Raw Milk

Jiang

Zhong

et al. 2021

Separations

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“…Thus efficient and selective detection of cyanide ion is a highly desirable task. Various conventional methods have been developed for quantitative detection of cyanide ion like titrimetric, electrochemical, spectrophotometric, and chromatographic analyses . However, these methods have different limitations such as large time consumption, high cost and requirement of highly skilled operators.…”

Section: Introductionmentioning

confidence: 99%

Reversible Addition of Cyanide to Triphenylamine Attached Difluoroboron β‐Diketonate Facilitated Selective Colorimetric and Fluorimetric Detection of Cyanide Ion

et al. 2020

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Nucleophilic addition of cyanide on a new triphenylamine attached difluoroboron β‐diketonate {4‐[4‐(diphenylamino) phenyl]‐2,2‐difluoro‐6‐methyl‐2H‐1,3,2‐dioxaborinin‐1‐ium‐2‐uide (C4)} breaks the conjugation readily and thereby offers efficient and selective detection of cyanide. A rational mechanism based on UV/Vis, fluorescence, NMR (1H, 11B, and 19F) and HRMS analysis and DFT calculations has been proposed. The detection limit was found to be 0.36 µM. A test strip assay using the title compound has also been applied to detect CN– in aqueous solution for real‐time applications.

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“…Most methodologies of preparing samples for the determination of total cyanide content consist of adding sodium hydroxide to pH greater than 12, which results in trapping the volatile forms of cyanides and then in carrying out the distillation operation. Spectrophotometric techniques [9–11], which have been used for many years, are now mostly replaced by chromatographic ones (both GC [12, 13] and LC [14]), which are characterized by higher selectivity and sensitivity, while capillary electrophoresis [15] is rarely used.…”

Section: Introductionmentioning

confidence: 99%

Development of an Analytical Protocol for Determination of Cyanide in Human Biological Samples Based on Application of Ion Chromatography with Pulsed Amperometric Detection

Jaszczak

Ruman

Narkowicz

et al. 2017

Journal of Analytical Methods in Chemistry

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A simple and accurate ion chromatography (IC) method with pulsed amperometric detection (PAD) was proposed for the determination of cyanide ion in urine, sweat, and saliva samples. The sample pretreatment relies on alkaline digestion and application of Dionex OnGuard II H cartridge. Under the optimized conditions, the method showed good linearity in the range of 1–100 μg/L for urine, 5–100 μg/L for saliva, and 3–100 μg/L for sweat samples with determination coefficients (R) > 0.992. Low detection limits (LODs) in the range of 1.8 μg/L, 5.1 μg/L, and 5.8 μg/L for urine, saliva, and sweat samples, respectively, and good repeatability (CV < 3%, n = 3) were obtained. The proposed method has been successfully applied to the analysis of human biological samples.

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Headspace sorptive solid phase microextraction (HS-SPME) combined with a spectrophotometry system: A simple glass devise for extraction and simultaneous determination of cyanide and thiocyanate in environmental and biological samples

Cited by 20 publications

References 36 publications

Aqueous Two-Phase System–Ion Chromatography for Determination of Thiocyanate in Raw Milk

Aqueous Two-Phase System–Ion Chromatography for Determination of Thiocyanate in Raw Milk

Reversible Addition of Cyanide to Triphenylamine Attached Difluoroboron β‐Diketonate Facilitated Selective Colorimetric and Fluorimetric Detection of Cyanide Ion

Development of an Analytical Protocol for Determination of Cyanide in Human Biological Samples Based on Application of Ion Chromatography with Pulsed Amperometric Detection

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