Perchlorate occurrence in foodstuffs and water: Analytical methods and techniques for removal from water – A review

Hu, Junpeng; Xian, Yuezhong; Wu, Yuluan; Chen, Rongqiao; Dong, Hao; Hou, Xiaohong; Liang, Ming; Wang, Bin; Wang, Li

doi:10.1016/j.foodchem.2021.130146

Cited by 31 publications

(13 citation statements)

References 101 publications

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Section: Discussionmentioning

confidence: 99%

“…Online dialysis and sample preconcentration have been successfully applied to both IC and CE. Hyphenated techniques with high detection sensitivities are central to analyzing more complex matrices, as exemplified by LC-MS-MS 109 with an LOD of 0.01 μg kg −1 for ClO 4 − . 35 Based on complete adsorption and elution, this method offers higher sensitivity for the qualitative and quantitative analysis of ClO 4 − in water and foodstuffs.…”

Section: Discussionmentioning

confidence: 99%

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Analysis and electroanalysis of perchlorate in water and food samples: a critical review

et al. 2023

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Analysis and electroanalysis of perchlorate in water and food samples: a critical review

et al. 2023

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“…In recent years, perchlorate (ClO 4 – ) as an emerging trace contaminant has been detected in water and soil resources, as well as foods, and can influence the thyroid’s uptake of iodide, resulting in the dysfunction of certain metabolic processes. − The use of perchlorate is mostly related to military and aerospace activities, such as oxidizers in solid fuel rocket propellants, explosives, and pyrotechnics. − Perchlorate is widely regarded as a persistent pollutant in groundwater and surface water due to its high solubility, nonreactivity, and nonvolatility . Various approaches including physical, chemical, and biological treatments and combination technologies have been developed for the removal of perchlorate. − Considering cost effectiveness and treatment efficiency, the adsorption process is very attractive for water treatment. − Hydrotalcites also known as layered double hydroxides (LDHs, [M 1– x 2+ M x 3+ (OH) 2 ][A x / n n – · m H 2 O]), are high-performance adsorbents used to remove anions , and also have application prospects as antibacterial agents, flame retardants, anticorrosion agents, drug delivery vehicles, stabilizers, solar cell components, pollutant removal materials, catalysts, and sensors .…”

Section: Introductionmentioning

confidence: 99%

Ultrasound-Assisted Adsorption of Perchlorate Using Calcined Hydrotalcites and the Thermal Stabilization Effect of Recycled Adsorbents on Poly(vinyl chloride)

Cui,

Zhang,

Wladyka

et al. 2023

ACS Omega

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Due to their high anion exchange and memory effect, the layered double hydroxides (LHDs) have wide applications for some areas. In this work, an efficient and green recycling route for layered double hydroxide based adsorbents is proposed specifically for application as a poly(vinyl chloride) (PVC) heat stabilizer without requiring secondary calcination. Conventional magnesium−aluminum hydrotalcite was synthesized using the hydrothermal method followed by removal of carbonate anion (CO 3 2− ) between LDH layers by calcination. The adsorption of perchlorate anion (ClO 4 − ) by the memory effect of calcined LDHs with and without ultrasound assistance was compared. Using ultrasound assistance, the maximum adsorption capacity of the adsorbents (291.89 mg/g) was increased, and the adsorption process was fitted using the kinetic Elovich rate equation (R 2 = 0.992) and Langmuir adsorption model (R 2 = 0.996). This material was characterized using XRD, FT-IR, EDS, and TGA which demonstrated that ClO 4 − was intercalated into the hydrotalcite layer successfully. The recycled adsorbents were used to augment a commercial calcium−zinc-based PVC stabilizer package applied in a epoxidized soybean oil plasticized cast sheet which is based on an emulsion type PVC homopolymer resin. Use of perchlorate intercalated LDH augmentation yielded significant improvement to static heat resistance as indicated by the degree of discoloration with a life extension of approximately 60 min. The improved stability was corroborated by evaluation of HCl gas evolved during thermal degradation using conductivity change curves and the Congo red test.

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“…Such low concentration levels typically require multidimensional column setup for sample cleanup [18,20] usually combined with MS or MS n detection [21,22]. IC in combination with conductivity detection (CD) is the most frequently used analytical method for the determination of perchlorate [40], however, the use of CD usually requires the implementation of some pretreatment techniques [23]. Apart from the detection sensitivity, the most significant challenge when it comes to the determination of trace level analytes is the presence of macro-components.…”

Section: Introductionmentioning

confidence: 99%

“…With non-selective detection, such as UV or CD, this often leads to problems with signal integration of trace analytes, especially when only partial resolution from the macro-components can be achieved. Perchlorate can be determined by many other techniques, but most of them are insufficient for water analysis due to non-adequate sensitivity [40,41].…”

Section: Introductionmentioning

confidence: 99%

Trace determination of perchlorate in drinking water by capillary zone electrophoresis with isotachophoresis sample cleanup and conductivity detection

Žabenský

Bodor

Makata

et al. 2022

J of Separation Science

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An analytical test procedure for the direct determination of trace levels of perchlorate in drinking water by isotachophoresis combined with capillary zone electrophoresis was developed. A capillary electrophoresis analyzer with column coupling technology, capable of combining capillaries with different internal diameters, was employed in combination with conductivity detection. This combination of the capillary electrophoresis techniques facilitated preconcentration of the trace analytes and elimination of potentially interfering macro-components. To eliminate the influence of weak and moderately strong acids on the migration of perchlorate, acidic leading electrolyte (pH 3.2) in the isotachophoresis step and acidic background electrolyte (pH 3.9) in the zone electrophoresis step were chosen. The addition of polyvinylpyrrolidone into the electrolytes enhanced the resolution of perchlorate from other anions, especially remaining anionic macro-components. The developed method is characterized by good repeatability of migration time (relative standard deviation less than 0.2%) as well as peak area (relative standard deviation less than 5.9%), linearity (R = 0.9996), recoveries (100-112%), and sample throughput (90 samples/24 h). The limit of quantitation for perchlorate in drinking water was achieved at 12.5 nmol/L (1.25 μg/L). This approach is more sensitive and more robust than transient isotachophoresis and offers advantages over some more established analytical techniques such as ion chromatography.

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Perchlorate occurrence in foodstuffs and water: Analytical methods and techniques for removal from water – A review

Cited by 31 publications

References 101 publications

Analysis and electroanalysis of perchlorate in water and food samples: a critical review

Analysis and electroanalysis of perchlorate in water and food samples: a critical review

Ultrasound-Assisted Adsorption of Perchlorate Using Calcined Hydrotalcites and the Thermal Stabilization Effect of Recycled Adsorbents on Poly(vinyl chloride)

Trace determination of perchlorate in drinking water by capillary zone electrophoresis with isotachophoresis sample cleanup and conductivity detection

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