Fluorescence detection of pesticides using quantum dot materials – A review

Nsibande, Sifiso A.; Forbes, Patricia B.C.

doi:10.1016/j.aca.2016.10.002

Cited by 241 publications

(85 citation statements)

References 117 publications

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“…Applications of pesticides have secured almost one-third of crop production in the whole world. Pesticides have led to the improvement of food production to secure the demands of a never increasing human population (Nsibande and Forbes, 2016).…”

Section: Introductionmentioning

confidence: 99%

Biochemical Role of Pyrethroids on Male Fertility and Seminal Profile of Rat

Maksoud

Mahfouz

Soliman

et al. 2018

Benha Veterinary Medical Journal

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A B S T R A C TA total number of 80 Wister male rats, 9 -wk. old were taken, weighed and divided into four experimental groups to investigate the effect of Deltamethrin (DLM) oral administration (0.87, 8.7 and 17.4 mg/kg B.W) for a period of 9 weeks on reproductive organs and fertility indices of Wister male rats. The results indicated that DLM caused a significant reduction in Testis weights, sperm count, motility and viability and fructose in semen. Also induced decreases in serum FSH, LH and Estradiol levels however increase in sperm abnormalities. These results indicated that DLM is a toxic pyrethroid pesticide that produced significant reproductive toxicity in treated male rats as revealed by the severely affected parameters (Key word: DLM, Reproductive toxicity, Sperm quality) (http://www.bvmj.bu.edu.eg) (bvmj, 35 (1): 311-318, SEPT.., 2018)

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Section: Introductionmentioning

confidence: 99%

Biochemical Role of Pyrethroids on Male Fertility and Seminal Profile of Rat

Maksoud

Mahfouz

Soliman

et al. 2018

Benha Veterinary Medical Journal

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“…Accordingly, there are great amount of pesticides releasing into the environment and ecosystem. Furthermore, the common detection strategies are not capable to detect low quantities of pesticides and the remaining residues contaminate the surrounding environment [2]. Moreover, the pesticide residues could cause serious health problems for living organisms even in low concentrations [3].…”

Section: Introductionmentioning

confidence: 99%

Ultrasensitive fluorescent detection of pesticides in real sample by using green carbon dots

et al. 2020

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Pesticides, widely used in modern agriculture, could potentially cause environmental pollution and affect human lives. Hence, the development of a highly sensitive sensing element to detect pesticide residues is crucial for food safety and ecosystem protection. Optical methods based on fluorescence properties provide an ideal approach for screening and quantification of these compounds in different medias including water, plant, and nutritional products. The development of fluorescence emitting carbon dot-based sensors for monitoring pesticides has attracted great attention in recent years. In comparison to other fluorophores, carbon dots have more promising optical features, higher quantum yields and better biocompatibility. This article aims to present a novel fluorescent sensing method of diazinon, glyphosate, and amicarbazone using plant-based carbon dots. A comprehensive characterization of carbon dots obtained from cauliflower was performed by methods including UV-visible, FTIR spectroscopy, fluorometry, AFM, DLS, and zeta sizer. Following this step, carbon dots were used to detect pesticides. The fluorescence quenching property of carbon dots has been utilized to identify detection limit of 0.25, 0.5, and 2 ng ml-1 for diazinon, amicarbazone, and glyphosate, respectively. Also, real sample study revealed that the detection of pesticides accompanied by our developed nano-sensor is repeatable and accurate. According to carbon dots specificity determination, the prepared nano sensor does not have the potential to identify "bromacil" and "dialen super" pesticides but the other three mentioned pesticides are detectable. The results confirm that synthesized green carbon dots are well qualified for application in food safety and environmental monitoring.

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“…Fluorescence sensors, particularly quantum dot (QD) based probes, are being explored as an alternative analytical technique for sensitive detection of pesticides as shown in our previous review . Semiconductor QDs are attractive fluorescence signal reporters in sensing applications due to their unique optical properties which surpasses those of organic fluorophores, including high fluorescence quantum yields, broad absorption, narrow fluorescence emission, high photostability and resistance to photodegradation .…”

Section: Introductionmentioning

confidence: 99%

Development of a quantum dot molecularly imprinted polymer sensor for fluorescence detection of atrazine

Nsibande

Forbes

2019

Luminescence

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Atrazine is a common agricultural pesticide which has been reported to occur widely in surface drinking water, making it an environmental pollutant of concern. In the quest for developing sensitive detection methods for pesticides, the use of quantum dots (QDs) as sensitive fluorescence probes has gained momentum in recent years.QDs have attractive and unique optical properties whilst coupling of QDs to molecularly imprinted polymers (MIPs) has been shown to offer excellent selectivity. Thus, the development of QD@MIPs based fluorescence sensors could provide an alternative for monitoring herbicides like atrazine in water. In this work, highly fluorescent CdSeTe/ZnS QDs were fabricated using the conventional organometallic synthesis approach and were then encapsulated with MIPs. The CdSeTe/ZnS@MIP sensor was characterized and applied for selective detection of atrazine. The sensor showed a fast response time (5 min) upon interaction with atrazine and the fluorescence intensity was linearly quenched within the 2-20 mol L −1 atrazine range. The detection limit of 0.80 × 10 −7 mol L −1 is comparable to reported environmental levels. Lastly, the sensor was applied in real water samples and showed satisfactory recoveries (92-118%) in spiked samples, hence it is a promising candidate for use in water monitoring. KEYWORDS atrazine, fluorescence sensor, molecularly imprinted polymer, quantum dot

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Fluorescence detection of pesticides using quantum dot materials – A review

Cited by 241 publications

References 117 publications

Biochemical Role of Pyrethroids on Male Fertility and Seminal Profile of Rat

Biochemical Role of Pyrethroids on Male Fertility and Seminal Profile of Rat

Ultrasensitive fluorescent detection of pesticides in real sample by using green carbon dots

Development of a quantum dot molecularly imprinted polymer sensor for fluorescence detection of atrazine

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