Residue behavior and dietary risk assessment of chlorothalonil and its metabolite SDS-3701 in water spinach to propose maximum residue limit (MRL)

Lin, Hongfang; Zhao, Shengming; Fan, Xueqi; Ma, Yecheng; Wu, Xingling; Su, Yue; Hu, Jiye

doi:10.1016/j.yrtph.2019.104416

Cited by 25 publications

(11 citation statements)

References 23 publications

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“…To verify the limits for safe application of clothianidin, imidacloprid, abamectin, chlorantraniliprole, thiamethoxam, lambda-cyhalothrin, and acetamiprid, the health risk was quantified based on RQc [ 39 ] for chronic dietary exposure risk probability and RQa for acute dietary exposure risk probability, respectively.

…”

Section: Methodsmentioning

confidence: 99%

Pesticide Residue Behavior and Risk Assessment in Celery after Se Nanoparticles Application

Hejiang

Zhao

et al. 2021

Foods

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This study investigates pesticide levels in celery, and compares their degradation, dissipation, distribution, and dietary risk after spraying with selenium (Se) nanoparticles. Abamectin, imidacloprid, acetamiprid, thiamethoxam, and lambda-cyhalothrin were sprayed at 1.6, 6.8, 2.0, 1.0, and 0.7 g a.i. ha−1 followed by a 2 g·ha−1 Se nanoparticle application during the growing period. Thiamethoxam, abamectin, imidacloprid, lambda-cyhalothrin, and acetamiprid in celery degraded following a first order kinetic model after 2 g·ha−1 Se nanoparticles application. With the exception of acetamiprid, the half-lives of thiamethoxam, abamectin, imidacloprid, and lambda-cyhalothrin were reduced from 2.4, 0.5, 1.2, 4.2 days without Se nanoparticles application to 1.4, 0.2, 0.9, 3.7 days with the addition of Se nanoparticles (2 g·ha−1), respectively. The chronic dietary exposure risk probability (RQc) and the acute dietary exposure risk probability (RQa) of celery after Se nanoparticles application were within acceptable limits for consumption except for abamectin.

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…”

Section: Methodsmentioning

confidence: 99%

Pesticide Residue Behavior and Risk Assessment in Celery after Se Nanoparticles Application

Hejiang

Zhao

et al. 2021

Foods

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“…The detection of chlorothalonil referred to Lin's work (Lin et al, 2019) with minor changes, which was conducted on an Agilent gas chromatography-mass spectrometer with a HP-5MS quartz capillary column. The injector temperature program started at 120 C (held for 1 min), and it was increased to 220 C (held for 1 min) at a rate of 25 C min À1 ; then the temperature was increased until 250 C (held for 2 min) at a rate of 10 C min À1 .…”

Section: Instrumental Conditionsmentioning

confidence: 99%

“…Dimethomorph was originally produced to reduce resistance to metalaxyl, which was reported to cause potential hazard to fetuses, infants, and children (FAO, 2016). In addition, as the main metabolite of chlorothalonil, SDS-3701 was found to have higher acute and chronic toxicity than its parent compound (Lin et al, 2019). Therefore, considering the wide application of these three fungicides, the rational use of new formulations containing these agrochemical ingredients should be strictly regulated, and their residues on crops need to be studied to assess the dietary intake risks for consumers.…”

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confidence: 99%

Residue levels, household processing evolution, and risk assessment of chlorothalonil, SDS‐3701, metalaxyl, and dimethomorph in Dendrobium officinale Kimura et Migo

Zhao

Hou

2022

Biomedical Chromatography

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Dendrobium officinale, a minor crop with medicinal and edible value, is increasingly consumed by people, but the pesticide residues on it have received little attention. In this work, field trials were conducted under good agricultural practice conditions to investigate the residues of chlorothalonil, SDS‐3701, metalaxyl, and dimethomorph in D. officinale; then the evolution of these pesticides after household processing was studied. The results indicated that chlorothalonil, SDS‐3701, metalaxyl, and dimethomorph were 2.41–30.12, 0.20–1.23, 0.07–0.80, and 0.19–7.90 mg kg−1, respectively, in stems at recommended preharvest interval (30 days). Washing and soaking removed the pesticides in fresh stems with processing factors 0.41–1.14 and 0.12–1.13, respectively. In the brewing test, the transfer rates of pesticides in dry stems decreased from the first time (4.27–95.40%) to the third time (3.89–15.57%). Intake risk assessments were also conducted, and the risk quotients were no more than 27.02% for all compounds in different samples, which indicated acceptable risks for consumers. As effective risk‐reducing home‐processing methods, washing, soaking, and multiple brewing were suggested in this work, hoping to help consumers with diet safety.

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“…Ratiometric fluorescence analysis can measure the concentration of the target by measuring the ratio of the photoluminescence intensity. − Because of the built-in reference signal, the probe can reduce systematic errors and improve sensitivity and accuracy . However, most ratiometric sensors using fluorescent organic dyes suffer from photobleaching and low fluorescence quantum yield and generally exhibit a wide emission band and a narrow excitation wavelength. , Organic molecular dyes also suffer from complex syntheses and purification processes . In contrast, semiconductor quantum dots with excellent optical properties have been widely used in the detection of ions, amino acids, proteins, and environmental pollutants .…”

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confidence: 99%

“…16 However, most ratiometric sensors using fluorescent organic dyes suffer from photobleaching and low fluorescence quantum yield and generally exhibit a wide emission band and a narrow excitation wavelength. 17,18 Organic molecular dyes also suffer from complex syntheses and purification processes. 19 In contrast, semiconductor quantum dots with excellent optical properties have been widely used in the detection of ions, amino acids, proteins, and environmental pollutants.…”

mentioning

confidence: 99%

Ratiometric Fluorescent Quantum Dot-Based Biosensor for Chlorothalonil Detection via an Inner-Filter Effect

et al. 2020

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A new sensitive sensor for detecting chlorothalonil (CHL) based on the inner-filter effect (IFE) between gold nanoparticles (AuNPs) and ratiometric fluorescent quantum dots (RF-QDs) was developed. Here, RF-QDs were designed by two different color CdTe QDs. Based on the IFE, the AuNPs can quench the fluorescence of the RF-QDs. Because of the electrostatic attraction between protamine (PRO) and the AuNPs, the PRO can restore fluorescence effectively. Papain (PAP) can easily hydrolyze PRO and causes the quench of fluorescence quenching. The addition of CHL can inhibit PAP activity and restore the fluorescent signal. Through the characterization of the structural changes of PAP, the inhibition and mechanism of CHL on PAP activity were studied. The ability of CHL to inhibit PAP activity was evaluated by measuring the fluorescence of the RF-QDs. Under the optimal conditions, this sensing platform shows a response to CHL in the range of 0.34–2320 ng/mL and a detection limit of 0.0017 ng/mL. Based on the CHL inhibition of PAP activity, the RF-QDs showed good selectivity for CHL. The practical application of the proposed system was demonstrated by detecting CHL in food and environmental samples with satisfying results.

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Residue behavior and dietary risk assessment of chlorothalonil and its metabolite SDS-3701 in water spinach to propose maximum residue limit (MRL)

Cited by 25 publications

References 23 publications

Pesticide Residue Behavior and Risk Assessment in Celery after Se Nanoparticles Application

Pesticide Residue Behavior and Risk Assessment in Celery after Se Nanoparticles Application

Residue levels, household processing evolution, and risk assessment of chlorothalonil, SDS‐3701, metalaxyl, and dimethomorph in Dendrobium officinale Kimura et Migo

Ratiometric Fluorescent Quantum Dot-Based Biosensor for Chlorothalonil Detection via an Inner-Filter Effect

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