Contamination levels of organophosphorus and synthetic pyrethroid pesticides in vegetables marketed in Accra, Ghana

Blankson, G.K.; Osei-Fosu, Paul; Adeendze, E.A.; Ashie, D.

doi:10.1016/j.foodcont.2016.03.045

Cited by 65 publications

(17 citation statements)

References 17 publications

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“…Within the composting process, greenhouse gases (GHGs) are produced, such as nitrous oxide (N 2 O), methane (CH 4 ), and ammonia (NH 3 ) [74]. Although the generation of these GHGs is lower than when using livestock manure to improve the yield of certain crops [75], GHG emissions from compost can be reduced using chemical additives (salts of PO 4 3− , Mg 2+ , superphosphate, gypsum, etc.) that promote chemical reactions in the compost substrate in relation to the renewal processes of N; physical additives (biochar, zeolites, bentonites, sand, soil, etc.…”

Section: Compost Vermicompost and Biocharmentioning

confidence: 99%

Natural Organic Compounds for Application in Organic Farming

2020

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Chemical fertilizers, pesticides, and fungicides are widely used in agriculture to improve crop yields. Most of the compounds used are synthetic, and their overuse causes environmental pollution and human health problems. Currently, several countries are working to reduce the use of agrochemicals. Organic agriculture is now emerging as a sustainable alternative to traditional agriculture using environmentally friendly strategies such as the application of organic fertilizers from plant and animal waste and pesticides based on plant extracts and microbials. However, the availability of commercial biopesticides and organic fertilizers is very limited because there are certain barriers to the commercialization of biological products. These barriers include small available quantities of raw materials and strict registration laws requiring toxicological tests and other studies that are expensive and time consuming. The objective of this review is to provide details about the various organic fertilizers and pesticides that do not have the same disadvantages as synthetic compounds in terms of persistence and toxicity.

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Section: Compost Vermicompost and Biocharmentioning

confidence: 99%

Natural Organic Compounds for Application in Organic Farming

2020

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“…Most croplands are indeed not studied for pyrethroids (Africa, Brasil, etc., see review [62]). In African market, esfenvalerate was the highest pesticide residue in fruits and vegetables, and allethrin was also detected, attesting for their use [80][81][82][83]. Ukraine, Pakistan, Turkey, Paraguay, and India registered the larger pyrethroid use while environmental informations on pyrethroid occurrence are mainly lacking for those countries [7,26].…”

Section: Future Research Integrationmentioning

confidence: 99%

Fate of Pyrethroids in Freshwater and Marine Environments

Méjanelle¹,

Jara

Dachs

2020

The Handbook of Environmental Chemistry

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As a consequence of their increasing use, pyrethroid insecticides are recognized as a threat for nontarget species and ecosystem health. The present chapter gives a state-of-art overview of individual pyrethroid occurrence in waters and sediments worldwide, together with recent reports of their quantification in the atmospheric gas and aerosol phases. Degradation rates, transport processes, and partitioning of pyrethroids between environmental phases are reviewed. River flow efficiently transports pyrethroids to river mouths and estuaries, while pyrethroid

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“…Ingestion of agricultural products with excessive pesticide residues may increase the risk of multiple cancers, which include leukemia, prostate, and colorectal cancer (Lozowicka, 2015; Sabarwal, Kumara, & Singha, 2018). Particularly, organophosphorus pesticides (OPs) are one of the mainstream pesticides in agriculture due to their acute toxicity (Blankson, Osei‐Fosu, Adeendze, & Ashie, 2016). Different types of OPs vary in degrees of toxicity to the human body, among them, avermectin is considered to be a highly toxic insecticide and phoxim has great destructive effects on the central nervous and gastrointestinal system of the human body (Zhu, Wang, Ding, Liu, & Xiao, 2018).…”

Section: Introductionmentioning

confidence: 99%

Pesticide residues identification by impedance time‐sequence spectrum of enzyme inhibition on multilayer paper‐based microfluidic chip

Yang

et al. 2020

J Food Process Engineering

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Different organophosphorus pesticides (OPs) normally vary in the level of toxicity to human health, but common electrochemical identification methods usually require complex electrode fabrication processes and high detection cost. To overcome these problems, a pesticide residues identification method based on multilayer paper-based microfluidic chip was proposed. The microfluidic chip integrates the enzyme inhibition and a label-free screen-printed carbon electrode (SPCE). Three different pesticides were selected as study objects, respectively, avermectin, phoxim, dimethoate. This chip realizes on-chip identification via analyzing impedance time-sequence spectrum data aroused by the enzyme inhibition during the 15 min period. A classification model based on principal component analysis (PCA) and support vector machines (SVMs) was established to evaluate these data. Furthermore, the real-world sample (lettuce) was tested to verify the feasibility of the proposed detection method. The results showed that the classification accuracy was achieved around 93% in multiple experiments. Therefore, the method has good stability and specificity in rapid identification of different pesticides. Practical Applications Identification of pesticide types is essential to human health, for this, impedance time-sequence spectrum data aroused by the enzyme inhibition during the 15 min period was used to establish a classification model to identity different types of pesticides. In this article, multilayer paper-based microfluidic chip and a label-free screenprinted carbon electrode (SPCE) was proposed without complicated operation steps and expensive cost, which provide a basis for establishment of the rapid pesticide discriminator.

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Contamination levels of organophosphorus and synthetic pyrethroid pesticides in vegetables marketed in Accra, Ghana

Cited by 65 publications

References 17 publications

Natural Organic Compounds for Application in Organic Farming

Natural Organic Compounds for Application in Organic Farming

Fate of Pyrethroids in Freshwater and Marine Environments

Pesticide residues identification by impedance time‐sequence spectrum of enzyme inhibition on multilayer paper‐based microfluidic chip

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