JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES
·
2019
·
IF 1.463
Mingbo Ma,Suozhuai Dong,Wanhui Jin,Chongqi Zhang,Wenlong Zhou
Pesticides carried by cotton fiber are potential risk for production workers and consumers. Dissipation behaviour of a commonly used cotton pesticide profenofos in cotton fiber during growing period and scouring treatment was investigated. The results showed that profenofos in the fiber from the pre-opened and post-opened bolls both decreased to undetectable amounts 21 days after pesticide application. However, a minority of profenofos was converted to a strongly irritant compound, 4-bromo-2-chlorophenol and retained a non-negligible amount in cotton fiber even after 28 days. Profenofos and its degradation product could be completely removed during the conventional cotton scouring process. The degradation half-time of profenofos in scouring bath was only 3.0 min, and the degradation product was also 4-bromo-2-chlorophenol. Cotton products made of profenofos-carrying fiber are safe; however, the scouring waste should be detoxicated before discharge due to the accumulation of 4-bromo-2-chlorophenol in the scouring bath. These results could be useful for evaluating the risk of cotton fiber from the profenofos applied fields.
研究领域:
农业科学
·
环境科学
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DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
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2025
·
IF 5.1
Jiatong Li,Jie Li,Jiakang Hu,Yongxin Li,Hui Huang
The dual enzyme-like activities (phosphatase-like activity and laccase-like activity) of one nanozyme (Ce-MOF-808) were employed to develop a nanozyme cascade sensor for the facile and selective detection of profenofos. It was found that the nanozyme Ce-MOF-808 had phosphatase-like activity (V max = 0.31 μM/min and K m = 0.014 mM) and laccase-like activity (V max = 6.27 μM/min and K m = 0.033 mM). In the cascade sensor process, profenofos was first hydrolyzed by Ce-MOF-808. The P O bond was cleaved to produce 4-bromo-2-chlorophenol containing phenol through the phosphatase-like activity of nanozyme. The colorless product was efficiently oxidized because of the laccase-like activity of nanozyme, and then reacted with the color rendering agent 4-aminoantipyrine to produce the red quinone imine. The absorbance peak at 510 nm fitted a linear curve. The limit of detection (LOD) was determined to be 3.33 μg/mL in this method. The quantitative detection of profenofos was conducted on a variety of different real samples. Nanozymes could be stored at 4 ℃ for a long time and the detection method was simple and direct. The nanozyme cascade sensor was convenient and rapid for the detection of pesticides and had promising application prospects in the conventional rapid detection of pesticides in the field.
研究领域:
生物化学
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分析化学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Yue Sun,Sisi Wang,Mengya Li,Minghua Xiong,Hui Zhang
In recent years, the widespread usage of profenofos in agricultural practices has increased its residues in the environment, posing a serious threat to environmental and human health. However, the degradation efficiency of profenofos through either biotic or abiotic processes alone remains low, and these processes are often accompanied by the generation of secondary pollutants. In this study, a novel hybrid nanocatalyst, OpdB/Fe 3 O 4 @GO@ZIF-8, was synthesized through in situ encapsulation of profenofos hydrolase OpdB and graphene oxide (GO)-wrapped Fe 3 O 4 particles into ZIF-8 crystals via biomimetic mineralization to achieve efficient removal of profenofos. The encapsulated OpdB protected by the ZIF-8 framework exhibited high enzymatic activity in the integrated system. Additionally, the introduction of GO promoted the transfer of photo-generated electrons between ZIF-8 and Fe 3 O 4 , mediating the formation of free radicals during the photo-Fenton reaction. The encapsulated OpdB first specifically catalyzed the hydrolysis of profenofos to produce the main by-product, 4-bromo-2-chlorophenol (BCP), subsequently Fe 3 O 4 @GO@ZIF-8 rapidly degraded BCP through oxidative dehalogenation. The heterojunction exhibited excellent degradation performance for profenofos, implementing the complete detoxification of 50 mg L −1 of profenofos at an irradiation intensity of 300 W and 6 mM H 2 O 2 at pH 5 within 3 h. This performance is superior to any single biodegradation and inorganic catalysis reported previously. The enhanced degradation ability of OpdB/Fe 3 O 4 @GO@ZIF-8 could be attributed to the synergistic effect of the heterojunction formed between the bio-enzymatic and chemical catalysis systems. Overall, this strategy provides novel insights into the construction of heterojunction catalysts based on metal-organic frameworks for the removal and remediation of refractory pesticide pollution in the environment.
研究领域:
环境科学
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生物催化
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材料科学
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产品关联
DOI
PubMed
高影响因子
Frontiers in Chemistry
·
2020
·
IF 3.693
Chen Mei-jun,Yang Hai-lin,Si Ya-min,Tang Qian,Chow Cheuk-fai,Gong Cheng-bin
As a moderately toxic organophosphorus pesticide, profenofos (PFF) is widely used in agricultural practice, resulting in the accumulation of a high amount of PFF in agricultural products and the environment. This will inevitably damage our health. Therefore, it is important to establish a convenient and sensitive method for the detection of PFF. This paper reports a photoresponsive surface-imprinted polymer based on poly(styrene-co-methyl acrylic acid) (PS-co-PMAA@PSMIPs) for the detection of PFF by using carboxyl-capped polystyrene microspheres (PS-co-PMAA), PFF, 4-((4-(methacryloyloxy)phenyl)diazenyl) benzoic acid, and triethanolamine trimethacrylate as the substrate, template, functional monomer, and cross-linker, respectively. PS-co-PMAA@PSMIP shows good photoresponsive properties in DMSO/H2O (3:1, v/v). Its photoisomerization rate constant exhibits a good linear relationship with PFF concentration in the range of 0~15 μmol/L. PS-co-PMAA@PSMIP was applied for the determination of PFF in spiked tomato and mangosteen with good recoveries ranging in 94.4–102.4%.
研究领域:
分析化学
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环境科学
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农药残留检测
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DOI
高影响因子
Analytical Methods
·
2024
·
IF 2.7
Dangqin Jin,Jiali Xiao,Hui Zhou,Qin Gao,Aiqin Gong,Qin Xu,Yun Shu
An ultra-sensitive photoelectrochemical sensing platform for profenofos detection based on the inhibition of catalase activity was prepared in this work. First, the novel functional nanocomposite material AgVO3/BiOI was prepared by a hot solvent method and successive ion layer adsorption reaction. Then, chitosan was employed as a dispersion medium to disperse and immobilize the catalase. Under visible light irradiation, the prepared CAT/CS/AgVO3/BiOI/ITO nanocomposite electrode generates a stable low photocurrent in hydrogen peroxide solution. When this electrode is immersed in a phosphate buffer solution containing profenofos, the activity of the catalase is inhibited, resulting in an increase in the photocurrent. Under the optimized experimental conditions, the profenofos concentration and increase in photocurrent are linearly related in the concentration range of 1 × 10−10 to 5.0 × 10−8 mol L−1, and the limit of detection is 1.0 × 10−11 mol L−1. This biosensor shows good selectivity for detecting profenofos in fruits and vegetables, and the determination results of profenofos are satisfactory.
研究领域:
生物传感
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材料科学
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环境监测
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产品关联
DOI
PubMed
高影响因子
SPECTROSCOPY LETTERS
·
2025
·
IF 1.6
Jin Dangqin,Zhou Hui,Xiao Jiali,Gao Qin,Gong Aiqin
This study presents the development and validation of UV-spectrophotometry methods for the quantification of organophosphorus pesticide residues in fruits and vegetables based on solid phase extraction and the principle of enzyme inhibition of catalase. A silica gel modified with 3,3 ‘- dodecyl-1,1’ - di-1-vinylimidazolium bromide ionic liquid (Poly - (3,3 ‘- dodecane-1,1’ - bis-1-vinylimidazolium dibromide modified silica), Poly (DBVD) - Sil, is used as a solid-phase extraction adsorbent. At the same time, based on the principle of enzyme inhibition of catalase, bovine liver catalase was screened as the enzyme solution, and a rapid detection method for profenofos residue was established by solid-phase extraction UV-spectrophotometry by optimizing the reaction conditions. That CAT inhibited the oxidation of MB by H2O2, limited MB fading, and the degree of absorbance recovery was related to CAT activity. Profenofos has a significant inhibitory effect on catalase, with a decrease in absorbance values. The natural logarithm of profenofos is linearly related to the enzyme activity inhibition rate within the range of 0.001-5.0 mg/L, the linear regression equation is y = 0.0509x + 0.4341, with R2=0.9968, the detection limit (3s/k) is 3.1 × 10−4 mg/L. A standard recovery rate of 95.3% to 104.2% for profenofos. The results showed the method is simple, fast, precise, accurate, and has a low detection limit, meeting the needs of rapid detection of profenofos residues in fruits and vegetables.
研究领域:
分析化学
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食品科学
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环境科学
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产品关联
DOI
高影响因子
Agronomy-Basel
·
2024
·Vol. 14
·期 2
·399
·
IF 3.3
Nan Zhang,Yawei Yang,Xin Wang,Taozhong Shi,Pei Lv,Qing X. Li,Rimao Hua
Profenofos is a detectable insecticide in the environment with strong toxicity to non-targeted organisms. Photodegradation is a main transformation of profenofos in the environment. Myricetin is a flavonoid that strongly scavenges free radicals. The effect of myricetin on the photodegradation of profenofos was studied. The half-lives (T1/2) of profenofos were 1.7–7.0 and 90 h under artificial light and sunlight. The photolysis rate of profenofos decreased by 1.87–4.72 and 7.62 times with the addition of 20 ratios of myricetin. Free radicals reacting with profenofos were •OH and1O2, and the key free radical was •OH. Myricetin strongly scavenged •OH and1O2which rapidly reacted with profenofos.O-(2-Chlorophenyl)-O-ethyl-S-propyl phosphorothioate (M3) andO-(2-chlorophenyl)-O-ethyl phosphorothioate (M4) were major and new photoproducts of profenofos. According to the Ecological Structure Activity Relationships, photodegradation of profenofos was a detoxification process, but myricetin inhibited the photodegradation of profenofos and its photoproducts. These results highlight the implication of myricetin on the fate and potential risk of profenofos in the environment.
研究领域:
环境科学
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农药化学
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产品关联
DOI
高影响因子
ANALYTICAL LETTERS
·
2022
·
IF 2.267
Zhufeng Lu,Jiayou Li,Jie Shen,Hongmei Wang
A biosensor based on the optical signal of gold nanorods (GNRs) and an aptamer as the recognition element is reported to perform the rapid and selective spectrophotometric determination of profenofos. The GNR synthesized by the seed growth method have unique structures which binds with the aptamer through electrostatic adsorption and is well dispersed in a salt-containing solution. Upon the addition of profenofos, specific recognition caused aggregation of the GNRs. The optical signal therefore decreased and the response linearly related to the concentration of profenofos. The results demonstrate that ascorbic acid as the reducing agent plays an important role in the morphology of the GNRs. GNRs with the length-diameter ratio (L/D) of 12 stably combined with the aptamer. For the optimum conditions, spectrophotometric determination of profenofos was achieved using the biosensor with a linear relationship between the absorbance of GNR at 508 nm and the concentration of profenofos from 40 to 460 µg/L. The limit of detection of the method was 31.93 µg/L. In addition, this approach shows good selectivity for the analysis of fruits and vegetable. A valuable new method is reported for the determination of profenofos.
研究领域:
分析化学
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环境科学
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农业科学
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
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2022
·
IF 9.231
Feiyan Liu,Shengliang Zhao,Xuandi Lai,Yongyao Fan,Peigang Han,Liqiong Chen
Colorimetric and fluorescent sensors were developed for the detection of profenofos. The colorimetric assay relied on the aggregation of cysteine modified gold nanoparticles (Au-cys) composite caused by the hydrogen bond and Au-S bond between profenofos and Au-cys. The further addition of S, N -doped carbon quantum dots (CDs) (fluorescence quantum yield up to 98%) into the Au-cys system depended on the change of fluorescence intensity of Au-cys-CDs owing to the inner filter effect between Au-cys and CDs. Under the optimal conditions, the sensor exhibits good linearity within 0.2–1.2 mg L −1 and 20–320 μg L −1 , and limit of detection of 21.7 μg L −1 and 5.5 μg L −1 in colorimetry and fluorescence mode, respectively. The developed sensor did not only possess favorable selectivity and sensitivity, but also feasibility of usage in the actual detection of profenofos in farmland system samples.
研究领域:
农业科学
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环境科学
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分析化学
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DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2019
·Vol. 166
·期 15
·B1562
·
IF 3.12
Huimin Liu,Shuting Cheng,Xiaojie Shi,Hui Zhang,Qingxue Zhao,Haowei Dong,Yemin Guo,Xia Sun
In this work, an electrochemiluminescence (ECL) aptasensor based on silver nanoparticles (AgNPs) for detection of profenofos was presented. The aptasensor was based on the affinity of the aptamer (Apt) with the target profenofos. When the Apt contacted with the profenofos, the ECL detection signals were weakened, indicating the successful construction of the aptasensor. In order to improve the aptasensor performance, the platinum electrode (PE) was modified by AgNPs due to their good conductivity and catalytic property. Meanwhile luminol-hydrogen peroxide was selected as a luminescence system. Through the standard curve experiment and specificity experiment, it was proved that the sensor had the advantages of low detection limit and good specificity. Under the optimum conditions, the aptasensor had a good linear response to profenofos from 0.5 μg/mL to 100 μg/mL (1.34 μM to 267.6 μM ), with a low detection limit of 0.13 ng/mL and a correlation coefficient (R²) of 0.9903. The aptasensor was also successfully applied for detection of profenofos in real vegetables. Because the developed aptasensor had the following advantages of simple preparation, good stability, high selectivity and sensitivity, it would show great potential for other small molecule contamination detection.
研究领域:
分析化学
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环境科学
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农业科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2026
·
IF 3.6
Yuying Zhang,Jianfang Qin,Mengxi Zhang,Lijuan Jia,Fenglin Zhang,Tong Chang,Haiying Yang,Xu Liu,Yan Zhu
Exploiting atomic-precision metal nanoclusters as an electrochemical sensor for environmental detection is a significant application in the field of cluster chemistry. However, the development of cluster-based sensors is still in its infancy. Herein, we successfully fabricate a three-layer KBE-CS/Au 25 @MLG/GC electrode (KBE = kidney bean enzyme, CS = chitosan, MLG = multilayer graphene, GC = glassy carbon), in which Au 25 @MLG and CS serve to adsorb and protect the plant esterase of KBE, respectively. The optimized Au 25 -based sensor demonstrates an excellent linear relationship between the mass concentration of profenofos (lgC) and the inhibition rate (Inh %) within the range of 1∼2000 µg/L with a detection limit of 0.137 µg/L. Furthermore, this biosensor presents excellent reproducibility, anti-interference, and stability for the detection of profenofos in real samples. This study paves an avenue to construct a cluster-based detection platform with high performance in electrochemical sensing, facilitating the practical application of metal nanoclusters in pesticide detection. Graphical A three-layer electrochemical sensor is constructed based on an enzyme inhibition mechanism, in which atomically precise Au 25 nanoclusters serve as an electrocatalyst for the conversion of 1-naphthyl acetate to 1-naphthol that can be efficiently recognized in the enzymatic reaction. This novel biosensor exhibits outstanding reproducibility, anti-interference, and stability for the detection of profenofos with a low limit of 0.137 µg/L.
✓ 已验证
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Miao Chen,Xuerong Li,Qiulan Li,Jitao Li,Yaohong Gu,Peng Yang,Bo Yang,Yaling Yang
Nanozyme-based dephosphorylation reactions show potential for monitoring organophosphorus pesticides (OPs) but require efficient sensing platforms. Herein, a novel dual-mode cascaded amplification sensing strategy was established for the rapid detection of profenofos by employing metal-organic framework-based nanozymes (Ce-UiO-66/Zn) and carbon-dot-based nanozymes (Ce-CDs/MnO 2 ). Based on the high phosphohydrolase-like activity of Ce-UiO-66/Zn, profenofos could be rapidly hydrolyzed and the hydrolysis product would be further oxidized by Ce-CDs/MnO 2 with laccase-like activity, and the oxidative product was coupled with 4-aminoantipyrine to form a red product for colorimetric detection. Additionally, this cascade reaction was also used in the exploration of a smartphone sensing platform due to its obvious color change, which was used to visually analyze profenofos in different food samples and achieved ideal recovery rates. This study provides new insight into development of highly sensitive and selective biosensors, food safety and environmental on-site monitoring.
研究领域:
分析化学
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纳米技术
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环境监测
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食品安全
·
生物传感器
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）