Graphene and graphene like 2D graphitic carbon nitride: Electrochemical detection of food colorants and toxic substances in environment

Magesa, Felista; Wu, Yiyong; Tian, Yaling; Vianney, John-Mary; Buza, Joram; He, Quanguo; Tan, Yimin

doi:10.1016/j.teac.2019.e00064

Cited by 106 publications

(37 citation statements)

References 109 publications

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“…This method was also applied to the biological samples such as human serum and urine to prove the practical applications. The preparation of the serum samples wasbased onthe previous report [47][48][49][50]. The samples were diluted with PBS and the standard Trpsolution was supplemented to calculate the recovery.…”

Section: Sample Determinationmentioning

confidence: 99%

Sensitive Voltammetric Sensor for Tryptophan Detection by Using Polyvinylpyrrolidone Functionalized Graphene/GCE

Liu

Feng

et al. 2020

Nanomaterials

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In this paper, an electrochemical method for the measurement of tryptophan (Trp) was developed based on a glassy carbon electrode modified with polyvinylpyrrolidonefunctionalized graphene (PVP-GR)/glassy carbon electrode (GCE). In 0.1 M phosphate buffer solution (PBS, pH = 2.2), compared with bare GCE, PVP/GCE, and GR/GCE, the oxidation peak current of Trp increased dramatically at PVP-GR/GCE. The oxidation mechanism of Trp on the PVP-GR/GCE was discussed and the experimental conditions were optimized. Under the best experimental conditions, the oxidation peak current of Trp was proportional to its concentration in the range of 0.06 µM–10.0 µM and 10.0–100.0 µM, and the limit of detection (LOD) was 0.01 µM (S/N = 3). The target modified electrode with excellent repeatability, stability and selectivity, was successfully applied to detectTrp in drugs and biological samples.

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Section: Sample Determinationmentioning

confidence: 99%

Sensitive Voltammetric Sensor for Tryptophan Detection by Using Polyvinylpyrrolidone Functionalized Graphene/GCE

Liu

Feng

et al. 2020

Nanomaterials

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“…According to studies, Gr is considered as a fundamental structure in graphitic material and as aone-atom-thick planar sheet of sp 2 bonded carbon atoms in a honeycomb crystal lattice. Since the physical exfoliation by Novoselov which led to the synthesis of Gr in 2004, Gr has been widely used to modify the electrode owing to its increased electrical conductivity, lower costs, larger surface area, and higher tensile strength [ 42 ].…”

Section: Electrochemical Sensing and Biosensing Of Bpamentioning

confidence: 99%

Recent Advances in Electrochemical Sensors and Biosensors for Detecting Bisphenol A

Tajik

Beitollahi

Nejad

et al. 2020

Sensors

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In recent years, several studies have focused on environmental pollutants. Bisphenol A (BPA) is one prominent industrial raw material, and its extensive utilization and release into the environment constitute an environmental hazard. BPA is considered as to be an endocrine disruptor which mimics hormones, and has a direct relationship to the development and growth of animal and human reproductive systems. Moreover, intensive exposure to the compound is related to prostate and breast cancer, infertility, obesity, and diabetes. Hence, accurate and reliable determination techniques are crucial for preventing human exposure to BPA. Experts in the field have published general electrochemical procedures for detecting BPA. The present timely review critically evaluates diverse chemically modified electrodes using various substances that have been reported in numerous studies in the recent decade for use in electrochemical sensors and biosensors to detect BPA. Additionally, the essential contributions of these substances for the design of electrochemical sensors are presented. It has been predicted that chemically modified electrode-based sensing systems will be possible options for the monitoring of detrimental pollutants.

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“…Como os problemas de resíduos de pesticidas estão cada vez mais presentes na atualidade, é importante entre os pesquisadores que desenvolvam dispositivos que sejam ecológicos e amigáveis ao meio ambiente. 17,18 Dessa forma, a utilização de sensores eletroquímicos pode ser considerada maneira vantajosa para a análise de resíduos de pesticidas (em água, solo e alimentos) por apresentarem características significativas (alta sensibilidade, seletividade, estabilidade, baixo custo, fácil automação, potencial para miniaturização e análises in situ), além de apresentarem a possibilidade de serem desenvolvidos de forma sustentável.…”

Section: Sensores Eletroquímicosunclassified

Electrochemical Sensors Based on Different Materials for the Determination of Pesticides

Alves¹,

Coelho²,

Pereira³

2020

Rev. Virtual Quim.

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Pesticides are chemical or biological substances widely used in agriculture in order to protect crops from attack by pests. However, many pesticides have been banned due to the fact that their compositions provide the formation of cancerous tumors and the appearance of other problems for human health, which makes it necessary to control and quantify their residues in food, water and soil. Thus, the development of techniques for the quantification and control of pesticides and their residues in food, water and soil is of essential importance. Among techniques that can be used for the analysis of these pesticides, the development of electrochemical sensors is an area of great interest for electroanalytical, and its use becomes advantageous due to characteristics such as high sensitivity, selectivity and stability, in addition, few residues are generated, have moderate cost and easy automation. One of the purposes in which sensors are widely used is in the determination of substances of environmental interest, providing control over the use of pesticides and especially their residues, whose presence of certain amounts in food, water and soil can be considered harmful to the health of living beings and the environment. Thus, this review aims to show trends in the use and application of electrochemical sensors for the determination of various pesticides in real samples. Os pesticidas são substâncias químicas ou biológicas muito utilizadas na agricultura com o intuito de proteger as lavouras do ataque de pragas. Entretanto, muitos pesticidas tiveram o uso proibido devido ao fato de suas composições proporcionarem a formação de tumores cancerígenos e o surgimento de outros problemas para saúde humana, o que torna necessário o controle e quantificação de seus resíduos nos alimentos, água e solo. Dessa forma, o desenvolvimento de técnicas para a quantificação e controle de pesticidas e seus resíduos em alimentos, água e solo, é de essencial importância. Dentre técnicas que podem ser utilizadas para a análise desses pesticidas, o desenvolvimento de sensores eletroquímicos é uma área de grande interesse da eletroanalítica, e seu uso torna-se vantajoso devido características como alta sensibilidade, seletividade e estabilidade, além disso, são gerados poucos resíduos, apresentam custo moderado e fácil automação. Um dos propósitos em que os sensores são amplamente utilizados é na determinação de substâncias de interesse ambiental, proporcionando o controle sobre a utilização de pesticidas e principalmente de seus resíduos, cuja presença de determinadas quantidades em alimentos, água e solo podem ser considerados prejudiciais à saúde de seres vivos e ao meio ambiente. Assim, esta revisão tem por objetivo mostrar as tendências sobre o emprego e aplicação de sensores eletroquímicos para a determinação de variados defensivos agrícolas em amostras reais.

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Graphene and graphene like 2D graphitic carbon nitride: Electrochemical detection of food colorants and toxic substances in environment

Cited by 106 publications

References 109 publications

Sensitive Voltammetric Sensor for Tryptophan Detection by Using Polyvinylpyrrolidone Functionalized Graphene/GCE

Sensitive Voltammetric Sensor for Tryptophan Detection by Using Polyvinylpyrrolidone Functionalized Graphene/GCE

Recent Advances in Electrochemical Sensors and Biosensors for Detecting Bisphenol A

Electrochemical Sensors Based on Different Materials for the Determination of Pesticides

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