Spectrophotometric detection of organophosphate diazinon by porphyrin solution and porphyrin-dyed cotton fabric

Cao, Huantian; Jin-hee, Nam; Harmon, H. James; Branson, Donna

doi:10.1016/j.dyepig.2006.01.032

Cited by 21 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When looking up to literature, lots of studies were reported on diazinon detection with various sensor electrodes. 62,63 However, this is the first report on diazinon detection with enzymeless MnClPc based electrodes since all of the presented studies in literature include various sensor electrodes modified with enzyme composites. For instance, Mulchandani and co-workers 56 have designed a sensor electrode to sense diazinon and they reported the detection limit of relevant electrode as 2.0 μmoldm −3 .…”

Section: Electrode Modification and Characterization-electrochemicalmentioning

confidence: 97%

Electropolymerization and Electrochemical Pesticide Sensor Application of Metallophthalocyanines Bearing Polymerizable Morpholin Groups

Özen

Keleş

Bıyıklıoğlu

et al. 2016

J. Electrochem. Soc.

View full text Add to dashboard Cite

In this paper, new metallophthalocyanines (MPc) were synthesized by cyclotetramerization of 4-{[4-(2-morpholin-4-ylethoxy)benzyl]oxy}phthalonitrile. To increase potential application of MPcs, redox active Co(II), Mn(III) and Ti(IV)O metal centers were preferred. MPcs were decorated with redox active and electropolymerizable {[4-(2-morpholin-4-ylethoxy)benzyl]oxy} substituents in order to coat the complexes with electropolymerization. Synthesized MPcs were characterized with UV-Vis, IR, 1H-NMR, 13C-NMR and MS (ES+ and MALDI-TOF) spectroscopies and voltammetry and in situ spectroelectrochemistry techniques. Voltammetric and in situ spectroelectrochemical analyses indicated that all complexes gave metal based reduction processes in addition to the Pc based processes. During oxidation reaction, all complexes were coated on the glassy carbon electrode (GCE) surface with oxidative electropolymerization reactions. Redox active and conductive GCE/MPc electrodes were constructed with the electropolymerization of MPcs and these electrodes were tested as active pesticide sensors for eserine, parathion, diazinon and fenitrothion pesticides. CoPc did not interact with any pesticide compound while MnPc and TiOPc selectively sensed diazinon and eserine, respectively.

show abstract

Section: Electrode Modification and Characterization-electrochemicalmentioning

confidence: 97%

Electropolymerization and Electrochemical Pesticide Sensor Application of Metallophthalocyanines Bearing Polymerizable Morpholin Groups

Özen

Keleş

Bıyıklıoğlu

et al. 2016

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…Thus, instead of measuring the enzyme inhibition, detection methods involving OPH allow for a more direct measurement of OP compounds. Nowadays, OPH is widely used as a biosensor because of its ability to hydrolyze a wide range of compounds containing P-O, P-F, P-S, or P-CN bonds [ 40 , 42 ]. Hydrolysis of the OP compounds led to the stoichiometric production of two protons which can be monitored and directly correlated to the amount of OP substrate [ 43 ].…”

Section: Advances In Detection Of Op Compoundsmentioning

confidence: 99%

Fluorescent Chemosensors for Toxic Organophosphorus Pesticides: A Review

Obare

Guo

et al. 2010

Sensors

131

View full text Add to dashboard Cite

Many organophosphorus (OP) based compounds are highly toxic and powerful inhibitors of cholinesterases that generate serious environmental and human health concerns. Organothiophosphates with a thiophosphoryl (P=S) functional group constitute a broad class of these widely used pesticides. They are related to the more reactive phosphoryl (P=O) organophosphates, which include very lethal nerve agents and chemical warfare agents, such as, VX, Soman and Sarin. Unfortunately, widespread and frequent commercial use of OP-based compounds in agricultural lands has resulted in their presence as residues in crops, livestock, and poultry products and also led to their migration into aquifers. Thus, the design of new sensors with improved analyte selectivity and sensitivity is of paramount importance in this area. Herein, we review recent advances in the development of fluorescent chemosensors for toxic OP pesticides and related compounds. We also discuss challenges and progress towards the design of future chemosensors with dual modes for signal transduction.

show abstract

Section: Fluorescence-based Biosensors For Op Compoundsmentioning

confidence: 99%

Advances in Analytical Methods for Organophosphorus Pesticide Detection

Samuels¹,

Obare²

2011

Pesticides in the Modern World - Trends in Pesticides Analysis

View full text Add to dashboard Cite

Environmental pollution by organic chemicals continues to be one of the world's leading challenges to sustainable development. Modern developed and developing countries utilize millions of synthetic organic compounds in their civilian, commercial, and defense sectors for an ever-expanding diversity of uses (Ariese et al., 2001). Common applications include plastics, lubricants, refrigerants, fuels, solvents, preservatives, surfactants, dispersants and pesticides. As a result of widespread global usage coupled with improper handling practices, many of these organic compounds enter the environment and cause air, water, and soil pollution. For example, pesticides and herbicides are applied directly to plants and soils, while accidental releases originate from spills, leaking pipes, underground storage tanks, waste dumps, and waste repositories. Many pesticides are sprayed in large amounts with only 1% reaching the intended target. Some of these contaminants have long half-lives and thus persist to varying degrees in the environment. They migrate through large regions of soil until they reach water resources, where they may present an ecological or humanhealth threat (Karr & Dudley, 1981). Organisms, vegetation, animals and humans are affected by various chemicals through absorption, inhalation or ingestion. These contaminants pose serious to fatal health hazards, such as asthma, birth defects and deaths. Therefore, environmental monitoring is required to protect the public and the environment from possible organic toxins released into the air, soil, and water. The United States Environmental Protection Agency (U.S. EPA) has imposed strict regulations on the concentrations of many environmental contaminants in air and water (U.S. EPA, 2010). However, current monitoring methods for most organic contaminants are costly and time-intensive, and limitations in sampling and analytical techniques exist (United States Geological Survey, U.S.G. S., 2010). Thus, there is a great demand for development of quick, simple and reliable methods for the detection of organic-based agricultural pesticides. In this chapter, advancements in methods to detect organophosphorus (OP) pesticides are discussed. Structure of OP CompoundsOP pesticides are synthetic esters, amides, or thiol derivatives of phosphoric, phosphonic, phosphorothioic, or phosphonothioic acids. Table 1 lists the names of the most commonly used OP pesticides (

show abstract

Spectrophotometric detection of organophosphate diazinon by porphyrin solution and porphyrin-dyed cotton fabric

Cited by 21 publications

References 15 publications

Electropolymerization and Electrochemical Pesticide Sensor Application of Metallophthalocyanines Bearing Polymerizable Morpholin Groups

Electropolymerization and Electrochemical Pesticide Sensor Application of Metallophthalocyanines Bearing Polymerizable Morpholin Groups

Fluorescent Chemosensors for Toxic Organophosphorus Pesticides: A Review

Advances in Analytical Methods for Organophosphorus Pesticide Detection

Contact Info

Product

Resources

About