Assay of picogram level isocarbophos residue on tangerines and oranges with luminol–albumin chemiluminescence system

Chen, Donghua; Song, Zhengyong; Lv, Hairu

doi:10.1016/j.foodchem.2012.07.014

Cited by 14 publications

(4 citation statements)

References 24 publications

(21 reference statements)

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“…Chlorpyrifos (17.8%), one of organophosphorus compounds (OPs) used to kill insects the most widely in the world. Isocarbophos, another member of OPs, presented in 4.5% of samples, applied widely to control a variety of leaf-eating and soil insects such as aphids, spider mite, borers and leaf rollers on rice, cotton, fruit and other crops (Chen et al 2012). But isocarbophos is banned to be used on fruits in China for its acute toxicity.…”

Section: Pesticides Residues In Bayberrymentioning

confidence: 99%

Pesticide residues in bayberry (Myrica rubra) and probabilistic risk assessment for consumers in Zhejiang, China

Yang

Wang

SenMiao

et al. 2017

Journal of Integrative Agriculture

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As pesticide residues in bayberry has raised serious concern from the public in China, a monitoring survey was carried out during 2013-2014 and 157 samples were analyzed in total. 23 pesticides were detected among the 44 pesticides analyzed and at least one pesticide was detected in 63% of 99 samples. Whereas 45.6% of samples were found with two or more pesticide residues, and 23.6% of samples with four or more pesticide residues. Probabilistic risk assessments indicated that estimated daily intake (EDI) of cyhalothrin at P97.5 th was 1.11 of acceptable daily intake (ADI) for children, the estimated short-term intake (ESTI) at P97.5 th is 1.9 and 1.78 of acute reference dose (ARfD) for adult and children, respectively, indicating the potential risk concern from pyrethroids. EDI of the pesticides with anti-androgenic effects ranged from 0.15-2.46 of ADI, the probability of exposure exceeding the ADI was 7.1 and 31.1% for adults and children, respectively, the probability of exposure of pyrethroids exceeding the ADI was 3.8% for children. Exposures for other pesticides and groups were below 1.0. In consideration of the co-occurrence of frequency of cyhalothrin and cypermethrin was 9.55% and the combinations of pesticides detected with anti-androgenic effects has not been found in the present monitoring, the results indicate that the pesticide residues in bayberry will not constitute serious public health risk, however, they are significant for the management of pesticide use on bayberry and dietary health risk in China.

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Section: Pesticides Residues In Bayberrymentioning

confidence: 99%

Pesticide residues in bayberry (Myrica rubra) and probabilistic risk assessment for consumers in Zhejiang, China

Yang

Wang

SenMiao

et al. 2017

Journal of Integrative Agriculture

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“…Therefore, a rapid and accurate analytical method for the estimation of IPS is required. The main methods for IPS detection include chromatography (Huang et al, 2002 ; Yao et al, 2015 ; Li et al, 2017 ), chemiluminescence (Chen et al, 2012 ), and electrochemical methods (Yan et al, 2012 ). In recent years, new methods, such as highly selective aptamers and catalytic techniques, have been used to detect IPS (Pang et al, 2014 ; Zhang et al, 2014 ; Chen et al, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Fullerol Nanocatalysis and Trimodal Surface Plasmon Resonance for the Determination of Isocarbophos

2020

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Fullerol (C 60 OH) has been shown to catalyze the trisodium citrate (TSC)-silver nitrate reaction to generate Ag nanoparticles (AgNPs). These AgNPs exhibit significant nanoplasmic surface-enhanced Raman scattering (SERS), resonance Rayleigh scattering (RRS), and absorption (Abs). When an aptamer (Apt) adsorbs on the C 60 OH surface, catalysis is inhibited, and the intensities of SERS, RRS, and Abs decrease. In the presence of isocarbophos (IPS), Apt forms a stable complex (Apt-IPS) and releases C 60 OH. As a result, SERS, RRS, and Abs intensities increase with increasing IPS concentration. Accordingly, a new SERS, RRS, and Abs trimodal method using Apt-labeled fullerol was established for the determination of IPS. Of the three spectral methods, SERS was the most sensitive, while the Abs method was the most cost-effective.

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“…As the characterization and performance of the fiber were well demonstrated in that paper , in this paper, emphasis was put on the combination of the multifiber. Five kinds of OPPs were chosen as model analytes as they are among the most frequently detected OPPs in fruits and vegetables . The extraction selectivity and capacity were evaluated by comparison with the multi‐template MIPs.…”

Section: Introductionmentioning

confidence: 99%

Multifiber solid‐phase microextraction using different molecularly imprinted coatings for simultaneous selective extraction and sensitive determination of organophosphorus pesticides

Xiang

Wang

Zhang

et al. 2019

J of Separation Science

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Three types of molecularly imprinted solid‐phase microextraction fibers were fabricated through sol‐gel method using diazinon, parathion‐methyl, and isocarbophos as templates, respectively, and assembled together to construct a multifiber for analysis of organophosphorus pesticides in complex matrices. The multifiber provided large extraction capacity and high imprinting factor up to 3.89. In contrast, the imprinting factor of a single fiber was around 1.6, and the multi‐template imprinted coating showed no selectivity. The multifiber was applied to analyze pesticides in fruits and vegetables. The limits of detection, which ranged from 0.0052 to 0.23 µg/kg, were lower than those obtained by a single molecularly imprinted fiber, and much lower than those reported by other methods. The recoveries of five analytes in spiked apple, cucumber, Chinese cabbage, and cherry tomato samples were 75.1–123.2%. The study shows that the molecularly imprinted multifiber could achieve simultaneous selective extraction and sensitive determination of multiple targets in complex matrices for high‐throughput analysis.

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Assay of picogram level isocarbophos residue on tangerines and oranges with luminol–albumin chemiluminescence system

Cited by 14 publications

References 24 publications

Pesticide residues in bayberry (Myrica rubra) and probabilistic risk assessment for consumers in Zhejiang, China

Pesticide residues in bayberry (Myrica rubra) and probabilistic risk assessment for consumers in Zhejiang, China

Fullerol Nanocatalysis and Trimodal Surface Plasmon Resonance for the Determination of Isocarbophos

Multifiber solid‐phase microextraction using different molecularly imprinted coatings for simultaneous selective extraction and sensitive determination of organophosphorus pesticides

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