Reliable environmental trace heavy metal analysis with potentiometric ion sensors - reality or a distant dream

Lisak, Grzegorz

doi:10.1016/j.envpol.2021.117882

Cited by 49 publications

(19 citation statements)

References 250 publications

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“…The term heavy metal implies a metallic element toxic that cause a poisonous level at low concentrations (Gemeda et al 2021;Lisak 2021). Their occurrence in nature can be detected through metal corrosion, soil erosion, or releasing heavy metals from ore mining (Malik et al 2019).…”

Section: Occurrence Of Heavy Metal Ionsmentioning

confidence: 99%

Invasive plants as biosorbents for environmental remediation: a review

et al. 2022

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Water contamination is an environmental burden for the next generations, calling for advanced methods such as adsorption to remove pollutants. For instance, unwanted biowaste and invasive plants can be converted into biosorbents for environmental remediation. This would partly solve the negative effects of invasive plants, estimated at 120 billion dollars in the USA.Here we review the distribution, impact, and use of invasive plants for water treatment, with emphasis on the preparation of biosorbents and removal of pollutants such as cadmium, lead, copper, zinc, nickel, mercury, chromate, synthetic dyes, and fossil fuels. Those biosorbents can remove 90-99% heavy metals from aqueous solutions. High adsorption capacities of 476.190 mg/g for synthetic dyes and 211 g/g for diesel oils have been observed. We also discuss the regeneration of these biosorbents.

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Section: Occurrence Of Heavy Metal Ionsmentioning

confidence: 99%

Invasive plants as biosorbents for environmental remediation: a review

et al. 2022

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“…. Numerous wastewater treatment and quality assessment methods have been used worldwide [16]. Microbial contaminants, such as total and fecal coliforms, normally exceed the recommended levels due to unrestricted entry of untreated wastewater into the environment; therefore, the use of suitable purification treatments with high removal efficiency for microbial agents are critical [28].…”

Section: Countrymentioning

confidence: 99%

“…In the arid regions, research studies have recommended the reuse (with precautions) of wastewater for irrigation in urban landscape and forage crop production [3,27,33]. However, analysis of this type of water depends on its Numerous wastewater treatment and quality assessment methods have been used worldwide [16]. Microbial contaminants, such as total and fecal coliforms, normally exceed the recommended levels due to unrestricted entry of untreated wastewater into the environment; therefore, the use of suitable purification treatments with high removal efficiency for microbial agents are critical [28].…”

Section: Countrymentioning

confidence: 99%

“…In fact, accumulation of wastewater contaminants, including heavy metals in the environment is inevitable. The contamination of toxic metals negatively impacts all environmental constituents, specifically the aquatic ecosystems [16]. In Pakistan, industrial wastewater analyses reveled that total suspended solids (190%), Ni (16%), Cd (80%), and Pb (106%) were higher than the maximum permissible limits [17].…”

Section: Introductionmentioning

confidence: 99%

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Heavy Metals and Microbes Accumulation in Soil and Food Crops Irrigated with Wastewater and the Potential Human Health Risk: A Metadata Analysis

Othman

Al-Assaf

Tadros

et al. 2021

Water

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Wastewater is actively used for irrigation of vegetable and forage crops in arid lands due to water scarcity and cost advantages. The objective of this review was to assess the effect of wastewater (mixture sources) reuse in irrigation on soil, crop (vegetable and forage crops), animal products, and human health. The metadata analysis of 95 studies revealed that the mean of toxic heavy metals including nickel (Ni), chromium (Cr), cadmium (Cd), lead (Pb), and zinc (Zn) in untreated wastewater were higher than the world standard limits in wastewater-irrigated regions. Although heavy metals in treated wastewater were within the standard limits in those areas, the concentration of those toxic elements (Pb, Cd, Ni, Cr, and As) exceeded the allowable limits in both soil and vegetables’ edible parts. In fact, the concentration of heavy metals in vegetables’ edible parts increased by 3–9 fold when compared with those irrigated with fresh water. Escherichia coli in wastewater-irrigated soil was about 2 × 106 (CFU g−1) and about 15 (CFU g−1) in vegetables’ edible parts (leaf, bulb, tuber and fruit) while the mean total coliforms was about 1.4 × 106 and 55 (CFU g−1) in soil and vegetables’ edible parts, respectively. For human health risk assessment, the estimated daily intake (EDI) and human health risk index (HRI) ranged from 0.01 to 8 (EDI and HRI > 1.0 associated with adverse health effects). Although the mean of EDI for heavy metals from wastewater-irrigated vegetables were less than 1, the HRI for Cd and Pb were above the limits for safe consumption. Overall, heavy metal levels in wastewater that used for irrigation of agricultural crops could be within the recommended levels by the world standards, but the long-term use of this reused water will contaminate soil and crops with several toxic heavy metals leading to potential carcinogenic risks to humans. Therefore, rigorous and frequent testing (wastewater, soil, and plant) is required in cultivated farms to prevent the translocation of heavy metals in the food chain.

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“…Potentiometric ion-selective electrodes (ISEs) with polymer-based ion-selective membranes (ISMs) are established electrochemical ion sensors. While they are routinely applied to clinical − and environmental − samples, designs that grant novel functionality have been frequently proposed in the recent literature. − The fundamental requirement for measurements using ISEs is that their potential readings should be stable and reproducible, assuring reliable determination of ions in various samples. The criteria for ISEs to achieve high potential reproducibility was originally proposed by Nikolskii and Materova .…”

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confidence: 99%

Physically Tailoring Ion Fluxes by Introducing Foamlike Structures into Polymeric Membranes of Solid Contact Ion-Selective Electrodes

Cheong

Lisak

2021

ACS Sens.

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Transmembrane ion fluxes have earlier been identified as a source of potential instability in solid contact ion-selective electrodes (SC-ISEs). In this work, foamlike structures were intentionally introduced into a potassium-sensitive plasticized poly(vinyl chloride) ion-selective membrane (ISM) near the membrane|solid contact interface by controlling the temperature during membrane deposition. Foamlike structures in the ISM were shown to be effective at physically tailoring the transport of ions in the ion-selective membrane, greatly reducing the flux of interfering ions from the sample to the membrane| solid contact interface. The drifts during a conventional water layer test were hence able to be greatly mitigated, even with SC-ISEs incorporating a relatively hydrophilic poly(3,4-ethylenedioxythiophene) doped with poly(styrenesulfonate) (PEDOT:PSS) solid contact. In solutions with a high background concentration of interfering ions, equilibrated ion-selective electrodes with foamlike membranes were able to reproduce their initial potentials within 0.6 mV uncertainty (n = 3) from 0 to 18 h. This was achieved despite sensor exposure to solutions exceeding the selectivity limit of the ISEs in 3 h intervals, allowing improvement of the potential reproducibility of the sensors. Since the introduction of foamlike structures into ISM is linked to temperature-controlled membrane deposition, it is envisaged that the method is generally applicable to all solid contact ion-selective electrodes that are based on polymeric membranes and require membrane deposition from the cocktail solution.

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Reliable environmental trace heavy metal analysis with potentiometric ion sensors - reality or a distant dream

Cited by 49 publications

References 250 publications

Invasive plants as biosorbents for environmental remediation: a review

Invasive plants as biosorbents for environmental remediation: a review

Heavy Metals and Microbes Accumulation in Soil and Food Crops Irrigated with Wastewater and the Potential Human Health Risk: A Metadata Analysis

Physically Tailoring Ion Fluxes by Introducing Foamlike Structures into Polymeric Membranes of Solid Contact Ion-Selective Electrodes

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