Mechanism and application of solid phase adsorption toxin tracking for monitoring microcystins

Zhao, Hui; Qiu, Jiangbing; Fan, Hua; Li, Aifeng

doi:10.1016/j.chroma.2013.02.048

Cited by 20 publications

(15 citation statements)

References 23 publications

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“…The key role played by the pore-size distribution, especially micropores of resin, for OA-group toxins was hypothesized in our previous study [22]. Utility of SPATT bags packaged by HP20 resin was also demonstrated to successfully monitor microcystins in freshwater [23]. Presently, the range of sorbents for passive sampling of micro-algal toxins was extended and assessed in laboratory and field studies [24].…”

Section: Introductionmentioning

confidence: 91%

Effect of seawater salinity on pore-size distribution on a poly(styrene)-based HP20 resin and its adsorption of diarrhetic shellfish toxins

Fan

Sun

Qiu

et al. 2014

Journal of Chromatography A

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In the present study, okadaic acid (OA) and dinophysistoxin-1 (DTX1) were spiked into artificial seawater at low, medium and high estuarine salinities (9‰, 13.5‰ and 27‰). Passive samplers (HP20 resin) used for solid phase adsorption toxin tracking (SPATT) technology were exposed in these seawaters for 12-h periods. Adsorption curves well fitted a pseudo-secondary kinetics model. The highest initial sorption rates of both toxins occurred in the seawater of medium salinity, followed by seawater of low and high estuarine salinity. Pore volumes of micropores (<2 nm) and small mesopores (2 nm

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Section: Introductionmentioning

confidence: 91%

Effect of seawater salinity on pore-size distribution on a poly(styrene)-based HP20 resin and its adsorption of diarrhetic shellfish toxins

Fan

Sun

Qiu

et al. 2014

Journal of Chromatography A

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“…Maximum adsorption capacity, q m , calculated from the adsorption isotherm, gave values of 18.6 mg g –1 , 15.3 mg g –1 , and 12.3 mg g –1 for MC-LA with TpBD-(NH 2 ) 2 , MC-LR with TpBD-(CF 3 ) 2 , and MC-RR with TpBD-(NO 2 ) 2 , respectively. With this result, TpBD-(CF 3 ) 2 outperforms the most commonly used resins reported for the capture of MC-LR from water (A860, HP20, and SP700), carbon and silica composites, ,− graphene oxide, and MOF adsorbent materials (Table S4). Nonetheless, despite the good performance of TpBD-(CF 3 ) 2 , some reported iron-based and ordered mesoporous carbon materials showed better performance.…”

Section: Resultsmentioning

confidence: 74%

“…To that end, methods such as liquid–liquid microextraction (LLME), , solid-phase microextraction (SPME), and solid-phase extraction (SPE) ,,, have been reported. Of the aforementioned methods, SPE adsorption techniques have been widely used for the preconcentration and purification of MCs from water using several adsorbents, such as DIAION HP20, − SP700, OASIS HLB resins, , immunosorbents, , molecularly imprinted polymers (MIPs), , and activated carbon . Despite the diversity of the adsorbents reported, most studies focus only on the parental compound, MC-LR, leaving an important gap in the comprehensive understanding of the adsorption capacities for other highly relevant, frequent, and toxic analogues such as MC-RR, MC-YR, and MC-LA. ,, …”

Section: Introductionmentioning

confidence: 99%

Selection of Covalent Organic Framework Pore Functionalities for Differential Adsorption of Microcystin Toxin Analogues

Fernandes

Kovář

Pšenička

et al. 2021

ACS Appl. Mater. Interfaces

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Microcystins (MCs), produced by Microcystis sp, are the most commonly detected cyanotoxins in freshwater, and due to their toxicity, worldwide distribution, and persistence in water, an improvement in the monitoring programs for their early detection and removal from water is necessary. To this end, we investigate the performance of three covalent organic frameworks (COFs), TpBD-(CF 3 ) 2 , TpBD-(NO 2 ) 2 , and TpBD-(NH 2 ) 2 , for the adsorption of the most common and/or toxic MC derivatives, MC-LR, MC-RR, MC-LA, and MC-YR, from water. While MC-LR and MC-YR can be efficiently adsorbed using all three COF derivatives, high adsorption efficiencies were found for the most lipophilic toxin, MC-LA, with TpBD-(NH 2 ) 2 , and the most hydrophilic one, MC-RR, with TpBD-(NO 2 ). Theoretical calculations revealed that MC-LA and MC-RR have a tendency to be located mainly on the COF surface, interacting through hydrogen bonds with the amino and nitro functional groups of TpBD-(NH 2 ) 2 and TpBD-(NO 2 ) 2 , respectively. TpBD-(NO 2 ) 2 outperforms the adsorbent materials reported for the capture of MC-RR, resulting in an increase in the maximum adsorption capacity by one order of magnitude. TpBD-(NH 2 ) 2 is reported as the first efficient adsorbent material for the capture of MC-LA. Large differences in desorption efficiencies were observed for the MCs with different COFs, highlighting the importance of COF−adsorbate interactions in the material recovery. Herein we show that efficient capture of these toxins from water can be achieved through the proper selection of the COF material. More importantly, this study demonstrates that by careful choice of COF functionalities, specific compounds can be targeted or excluded from a group of analogues, providing insight into the design of more efficient and selective adsorbent materials.

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“…In contrast, particulate grab (filter) samples underrepresented the total amount of MCs in the water. Finally, the applicability of Sepabeads ® SP700 resin to adsorb MCs from Microcystis aeruginosa cultures was also examined by Zhao et al (2013) [ 108 ], in comparison with HP20 resin. When SPATT bags were deployed in seawater spiked with MCs, the adsorption equilibration times for MCs were 30 and 15 min for HP20 and SP700 resins, respectively, showing that SP700 adsorbed MCs from water a little bit faster than HP20.…”

Section: Application Of Spatt Technology For the Monitoring Of Aqumentioning

confidence: 99%

Solid Phase Adsorption Toxin Tracking (SPATT) Technology for the Monitoring of Aquatic Toxins: A Review

Roué¹,

Darius

Chinain

2018

Toxins

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The Solid Phase Adsorption Toxin Tracking (SPATT) technology, first introduced in 2004, uses porous synthetic resins capable of passively adsorbing toxins produced by harmful microalgae or cyanobacteria and dissolved in the water. This method allows for the detection of toxic compounds directly in the water column and offers numerous advantages over current monitoring techniques (e.g., shellfish or fish testing and microalgae/cyanobacteria cell detection), despite some limitations. Numerous laboratory and field studies, testing different adsorbent substrates of which Diaion® HP20 resin appears to be the most versatile substrate, have been carried out worldwide to assess the applicability of these passive monitoring devices to the detection of toxins produced by a variety of marine and freshwater microorganisms. SPATT technology has been shown to provide reliable, sensitive and time-integrated sampling of various aquatic toxins, and also has the potential to provide an early warning system for both the occurrence of toxic microalgae or cyanobacteria and bioaccumulation of toxins in foodstuffs. This review describes the wide range of lipophilic and hydrophilic toxins associated with toxin-producing harmful algal blooms (HABs) that are successfully detected by SPATT devices. Implications in terms of monitoring of emerging toxic risks and reinforcement of current risk assessment programs are also discussed.

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Mechanism and application of solid phase adsorption toxin tracking for monitoring microcystins

Cited by 20 publications

References 23 publications

Effect of seawater salinity on pore-size distribution on a poly(styrene)-based HP20 resin and its adsorption of diarrhetic shellfish toxins

Effect of seawater salinity on pore-size distribution on a poly(styrene)-based HP20 resin and its adsorption of diarrhetic shellfish toxins

Selection of Covalent Organic Framework Pore Functionalities for Differential Adsorption of Microcystin Toxin Analogues

Solid Phase Adsorption Toxin Tracking (SPATT) Technology for the Monitoring of Aquatic Toxins: A Review

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