Fe3O4-SiO2-MIL-53 (Fe) nanocomposite for magnetic dispersive micro-solid phase extraction of cadmium (II) at trace levels prior to HR-CS-FAAS detection

Soylak, Mustafa; Uzcan, Furkan; Goktas, Oguzhan; Gümüş, Zinar Pınar

doi:10.1016/j.foodchem.2023.136855

Cited by 10 publications

(2 citation statements)

References 39 publications

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“…where C found is the determined concentration of each compound after adding a known amount of standard solution to the blank sample and C added is the known concentration of the compound solution added to the blank sample [62].…”

Section: Methods Validationmentioning

confidence: 99%

Assessment of Toxic Pyrrolizidine and Tropane Alkaloids in Herbal Teas and Culinary Herbs Using LC-Q-ToF/MS

Gumus

2023

Foods

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Pyrrolizidine alkaloids are secondary metabolites produced by plants as a defense against insects. These can cause acute or chronic toxicity in humans. Therefore, avoiding potential poisoning from the consumption of tea and culinary plants contaminated with pyrrolizidine alkaloids (PAs), pyrrolizidine alkaloids N-oxides (PANOs), and tropane alkaloids (TAs) is important for human health and food safety. Therefore, it is important to determine the levels of these substances with reliable and highly accurate methods. In this study, the PAs, PANOs, and TAs in herbal teas and culinary herbs sold in Turkish markets were identified and their levels were determined. Thus, the general profiles of herbal teas and culinary herbs in Turkey were revealed, and the compliance of the total amounts of PA and TA with the regulations was examined. The identification and quantification of 25 PAs and N-oxides and 2 TAs (atropine and scopolamine) in the samples was performed with a liquid chromatography-quadrupole time-of-flight tandem mass spectrometer (LC-Q-ToF/MS). At least a few of these substances were detected in all of the tested herbal teas and culinary herbs. The total contents of the black tea, green tea, mixed tea, flavored tea, chamomile tea, sage tea, linden tea, fennel tea, rosehip tea, peppermint, and thyme samples ranged from 4.6 ng g−1 to 1054.5 ng g−1. The results obtained shed light on the importance of analyzing the total dehydro PA, PANO, and TA amounts in plant-based products consumed in diets with sensitive and accurate methods, and they highlight the necessity of performing these analyses routinely in terms of food safety.

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Section: Methods Validationmentioning

confidence: 99%

Assessment of Toxic Pyrrolizidine and Tropane Alkaloids in Herbal Teas and Culinary Herbs Using LC-Q-ToF/MS

Gumus

2023

Foods

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“…To date, several conventional approaches have been used to analyze trace metal ions, involving inductively coupled plasma mass spectrometry (ICP-MS) 5 , high-performance liquid chromatography (HPLC) 6 , atomic absorption spectrometry (ABS) 7 , and electrochemical analysis 8 . However, their practical implementation is constrained by their cumbersome operation and expensive equipment.…”

Section: Introductionmentioning

confidence: 99%

A dual-responsive RhB-doped MOF probe for simultaneous recognition of Cu2+ and Fe3+

Zhang,

Cao,

et al. 2024

Sci Rep

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Based on the dual response of RhB@UiO-67 (1:6) to Cu2+ and Fe3+, a proportional fluorescent probe with (I392/I581) as the output signal was developed to recognize Cu2+ and Fe3+. Developing highly sensitive and selective trace metal ions probes is crucial to human health and ecological sustainability. In this work, a series of ratio fluorescent probes (RhB@UiO-67) were successfully synthesized using a one-pot method to enable fluorescence sensing of Cu2+ and Fe3+ at low concentrations. The proportional fluorescent probe RhB@UiO-67 (1:6) exhibited simultaneous quenching of Cu2+ and Fe3+, which was found to be of interest. Furthermore, the limits of detection (LODs) for Cu2+ and Fe3+ were determined to be 2.76 μM and 0.76 μM, respectively, for RhB@UiO-67 (1:6). These values were significantly superior to those reported for previous sensors, indicating the probe’s effectiveness in detecting Cu2+ and Fe3+ in an ethanol medium. Additionally, RhB@UiO-67 (1:6) demonstrated exceptional immunity and reproducibility towards Cu2+ and Fe3+. The observed fluorescence quenching of Cu2+ and Fe3+ was primarily attributed to the mechanisms of fluorescence resonance energy transfer (FRET), photoinduced electron transfer (PET), and competitive absorption (CA). This work establishes a valuable foundation for the future study and utilization of Cu2+ and Fe3+ sensing technologies.

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Magnetic solid phase extraction based on Fe3O4@SiO2@BZC as adsorbent for the extraction and pre-concentration of doxycycline hyclate from water and urine samples prior to UV–vis spectrophotometric analysis

Mohammed,

Hadi

2024

Chem. Pap.

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Fe3O4-SiO2-MIL-53 (Fe) nanocomposite for magnetic dispersive micro-solid phase extraction of cadmium (II) at trace levels prior to HR-CS-FAAS detection

Cited by 10 publications

References 39 publications

Assessment of Toxic Pyrrolizidine and Tropane Alkaloids in Herbal Teas and Culinary Herbs Using LC-Q-ToF/MS

Assessment of Toxic Pyrrolizidine and Tropane Alkaloids in Herbal Teas and Culinary Herbs Using LC-Q-ToF/MS

A dual-responsive RhB-doped MOF probe for simultaneous recognition of Cu2+ and Fe3+

Magnetic solid phase extraction based on Fe3O4@SiO2@BZC as adsorbent for the extraction and pre-concentration of doxycycline hyclate from water and urine samples prior to UV–vis spectrophotometric analysis

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