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Chowdhury NJ, Akbor MA, Nahar A, Ali Shaikh MA. Techniques for quantification of organochlorine pesticides from a validated method by using gas chromatography-electron capture detector. Heliyon 2024; 10:e34548. [PMID: 39114063 PMCID: PMC11305318 DOI: 10.1016/j.heliyon.2024.e34548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 07/11/2024] [Accepted: 07/11/2024] [Indexed: 08/10/2024] Open
Abstract
Organochlorine pesticides (OCPs) are persistent organic compounds found in aquatic environments worldwide. A well-validated and well-established analytical method is crucial for detecting OCPs in the environment. In this study, an analytical method for quantifying OCPs in water was developed and evaluated. Here, the range of linearity, reproducibility, uncertainty, specificity, method detection limits (MDL), and special emphasis on detection and quantitation limits were assessed. Recovery studies were performed to measure the accuracy and precision of the method. This method exhibited excellent linearity in the range of 2.5-20 μg/L for all compounds. As none of the targeted compounds was detected in the chromatograms of the blank sample with no baseline noise, the limits of detection (LOD) and limits of quantification (LOQ) were determined using the linear regression method, external calibration curve slope, and laboratory fortified blank-based detection. All compounds showed different LOD and LOQ values, depending on the approach used. In particular, endosulfan sulfate, methoxychlor, endrin ketone, H. epoxide, heptachlor, and 4,4'-DDT exhibited high detection limits. The recovery percentage of the 15 compounds at 5 μg/L spiked concentration was between 50 and 150 %, which is consistent with the accuracy of the APHA method. Except for endosulfan sulfate, the relative standard deviations of all other compounds were below 20 %, indicating good precision. This method has also been applied to real water samples. This validation technique is reliable, sensitive, simple, rapid, easy to comprehend, and reproducible. The application of this method in the real water samples was also conducted. Only α-BHC and γ-Chlordane were detected in the water sample.
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Affiliation(s)
- Nushrat Jahan Chowdhury
- Institute of National Analytical Research and Services (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
| | - Md. Ahedul Akbor
- Institute of National Analytical Research and Services (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
| | - Aynun Nahar
- Institute of National Analytical Research and Services (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
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Shah M, Kolhe P, Gandhi S. Two-dimensional layered MoSe 2/graphene oxide (GO) nanohybrid coupled with the specific immune-recognition element for rapid detection of endosulfan. ENVIRONMENTAL RESEARCH 2023; 238:117127. [PMID: 37716396 DOI: 10.1016/j.envres.2023.117127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/28/2023] [Accepted: 09/11/2023] [Indexed: 09/18/2023]
Abstract
Endosulfan (En) is an organochlorine biocide (OCB), that ends up in the environment due to the enzymatic and microsomal activity even though it is not accumulated in living tissue. Endosulfan acts as an organic micro-pollutant which disrupts land as well as aquatic ecosystem. In the present study, we chemically modified endosulfan and conjugated it with a carrier protein to produce an immune response. The generated antibodies were tested for specificity against En, and characterized before further use. Transition Metal Chalcogenides (TMC) showed excellent optoelectrical potential due to its direct bandgap and distinct physical as well as chemical characteristics. Herein, we synthesized a novel nanohybrid using MoSe2 in combination with graphene oxide (GO) and characterized thoroughly. This was similar to graphene-based metal chalcogenides which were further used in this study to fabricate biosensor for the sensitive detection of En. The in-house developed antibodies (En-Ab) were coupled with the nanohybrid to make MoSe2/GO/En-Ab electrode. Fabricated electrode was tested for electrochemical parameters using differential pulse voltammetry (DPV). Working efficiency of the fabricated electrode i.e., limit of detection (LOD), was found to be 7.45 ppt. In conclusion, we hypothesized that the synthesized TMC nanohybrids could be employed for biosensing of endosulfan, and can likely be developed to test field samples.
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Affiliation(s)
- Maitri Shah
- DBT-National Institute of Animal Biotechnology (NIAB), Hyderabad 500032, Telangana, India
| | - Pratik Kolhe
- DBT-National Institute of Animal Biotechnology (NIAB), Hyderabad 500032, Telangana, India
| | - Sonu Gandhi
- DBT-National Institute of Animal Biotechnology (NIAB), Hyderabad 500032, Telangana, India.
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3
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Amiri NA, Amiri FA, Faravardeh L, Eslami A, Ghasemi A, Rafiee M. Enhancement of MBBR reactor efficiency using effective microorganism for treatment of wastewater containing diazinon by engineered Pseudomonas putida KT2440 with manganese peroxidase 2 gene. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 316:115293. [PMID: 35597215 DOI: 10.1016/j.jenvman.2022.115293] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 04/16/2022] [Accepted: 05/09/2022] [Indexed: 06/15/2023]
Abstract
Pesticides not only are harmful to humans but they are noxious for water reservoirs, soil, and air quality as well. In this research, diazinon was removed from aqueous solutions by Moving Bed Biofilm Reactor (MBBR). The MBBR was spiked with transgenic Pseudomonas putida KT2440 with Pleurotus ostreatus fungus manganese peroxidase 2 gene to enhance the capabilities of Pseudomonas putida KT2440 in the degradation of diazinon. Although the amount of diazinon and COD and diazinon removal in the reactor including transgenic P. putida KT2440 was 95.46% and 97.47% and they were greater than the control and wild type (non-modified) P. putida KT2440 reactors, the surprising result was related to the adaptation pace of transgenic P. putida KT2440. The produced metabolites and the quantity of diazinon were assessed by HPLC and LC/MS. The metabolite hydroxyisopropyl diazinon was not found in the transgenic P. putida KT2440 reactor. Furthermore, a new sequence of cloned manganese peroxidase 2 gene has been recorded in GenBank with the accession number MT185558. According to bacterial identification of provided sludge the most frequent genus belonged to Aeromonas. Therefore, it seems that the MBBR in the presence of transgenic P. putida KT2440 with manganese peroxidase 2 gene can effectively remove the diazinon.
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Affiliation(s)
- Nafisah Aghazadeh Amiri
- Department of Environmental Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemah Aghazadeh Amiri
- Department of Environmental Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Leila Faravardeh
- Pesticide Research Department, Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran.
| | - Akbar Eslami
- Department of Environmental Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Abolghasem Ghasemi
- Plant Diseases Research Department, Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
| | - Mohammad Rafiee
- Department of Environmental Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Seasonal Changes in Pesticide Residues in Water and Sediments from River Tano, Ghana. JOURNAL OF ENVIRONMENTAL AND PUBLIC HEALTH 2022; 2022:8997449. [PMID: 35535351 PMCID: PMC9078842 DOI: 10.1155/2022/8997449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 02/21/2022] [Accepted: 04/13/2022] [Indexed: 01/29/2023]
Abstract
Pollution due to pesticide residues has been reported in the downstream of the Tano Basin in the rainy season and has been attributed to the anthropogenic activities upstream. However, data on the seasonal variations in pesticide residues in the upstream of Tano Basin are limited. Seasonal variations in 13 organochlorine pesticide residues, 8 organophosphorus pesticide residues, and 5 synthetic pesticide residues in water and sediment samples of River Tano upstream were assessed through extraction and Varian CP-3800 gas chromatography equipped with a CombiPAL Auto sampler set at ionization mode electron impact methods. Significantly higher pesticide residues were detected in water and sediment samples in the rainy season than the dry season. Permethrin (rainy: 0.007 ± 0.01 mg/kg; dry: 0.008 ± 0.02 mg/kg) and profenofos (rainy: 0.021 ± 0.02 mg/kg; dry: 0.026 ± 0.01 mg/kg) showed higher dry season concentrations in the sediment samples. Two isomers of lindane (δ-HCH = 0.059 ± 0.24 μg/L; γ-HCH = 0.002 ± 0.01 μg/L) were detected in the water in the rainy season, but 3 were detected in the sediment samples (δ-HCH = 0.004 ± 0.12 mg/kg; γ-HCH = 0.003 ± 0.01 mg/kg; aldrin = 0.001 ± 0.01 mg/kg) suggesting possible illegal use. The detected pesticide residual levels in both water and sediment samples were lower than the maximum residual levels in water and sediment. The Chemical Control and Management Centre of the Environmental Protection Agency should check possible faking and adulteration of banned organochlorine pesticides.
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Asamba MN, Mugendi EN, Oshule PS, Essuman S, Chimbevo LM, Atego NA. Molecular characterization of chlorpyrifos degrading bacteria isolated from contaminated dairy farm soils in Nakuru County, Kenya. Heliyon 2022; 8:e09176. [PMID: 35846483 PMCID: PMC9280583 DOI: 10.1016/j.heliyon.2022.e09176] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 01/18/2022] [Accepted: 03/17/2022] [Indexed: 11/16/2022] Open
Abstract
Chlorpyrifos (CP) is an organophosphate widely used as an insecticide and acaricide. Extensive application of CP contaminates ecosystems, polluting the environment and food products, creating health complications to humans due to its neurotoxicity. The study evaluated CP bioremediation by bacteria isolated from dairy farm soils in Nakuru County, Kenya, through enrichment culture technique. The growth response of the bacteria and degradation of chlorpyrifos was monitored every five days using UV-VIS Spectrophotometer (600nm). Enrichment culture technique led to the isolation of eighteen (MA1-MA18) potential CP degraders belonging to the genera Pseudomonas, Stenotrophomonas, Bacillus, Alicaligenes, and Achromobacter. The efficacy of four (4) strains was further investigated using Gas Chromatography-Mass Spectrometry (GC-MS) analysis. The results showed that all four strains significantly degraded chlorpyrifos in Minimum Salt Medium (MSM): Lysinibacillus sp.HBUM206408 (87.16 %), Stenotrophomonas maltophilia (82.04 %), Pseudomonas putida (89.52 %), and Achromobacter insuavis (91.08 %) within 16 days, producing 2-Hydroxy-3, 5, 6-trichloropyridine (TCP) as the main metabolite. Therefore, these strains can be used to degrade chlorpyrifos in contaminated soil. There is a need for further studies to determine the possible mechanisms and other metabolites of chlorpyrifos degradation by the isolates obtained in the study. Besides, future studies should explore the efficacy and survival of the organisms in the contaminated environment.
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Nyihirani F, Qu C, Yuan Z, Zhang Y, Mbululo Y, Janneh M, Qi S. Level, source, and distribution of organochlorine pesticides (OCPs) in agricultural soils of Tanzania. ENVIRONMENTAL MONITORING AND ASSESSMENT 2021; 194:19. [PMID: 34890011 DOI: 10.1007/s10661-021-09631-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 11/12/2021] [Indexed: 05/16/2023]
Abstract
This study investigated the level, composition, and spatial and vertical distribution of the organochlorine pesticides (OCPs) at 0-2 cm and 2-20 cm in the agricultural surface soils from Southeastern to Central-western Tanzania. Although the most abundant OCPs were DDT with a mean concentration of 2.29 ng/g, dieldrin (1.57 ng/g), and methoxychlor (0.79 ng/g), HCH was the most dominant (with detection frequency of 88%). OCP dominance was in the Southern Highlands, which is the most productive agricultural zone. Though there were indicators of recent inputs for some sites, OCP contamination was mainly historical. DDT contamination was dominated by p,p'-DDE and resulted from both technical DDT and dicofol while HCH contamination was dominated by γ-HCH and resulted from both technical HCH and lindane. Based on depth, the OCPs dominated mainly the upper 2 cm, which was associated with soil and environmental factors rather than recent inputs since most of the detected compounds were historical. Nevertheless, some sites showed exceptional high abundance in the lower soil with more concentration of parent compounds. Therefore, this study recommends the need for further studies on the influence of soil properties on OCPs' transport in the soil, surface water, and air. Besides, detection of recent inputs at some sites calls for more mapping of the OCPs in the country to strengthen their control and prevention of future risks.
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Affiliation(s)
- Fatuma Nyihirani
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, China
- School of Environmental Studies, China University of Geosciences, Wuhan, China
- Institute of Development Studies, Center for Environment, Poverty and Sustainable Development, Mzumbe University, Morogoro, Tanzania
| | - Chengkai Qu
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, China
- School of Environmental Studies, China University of Geosciences, Wuhan, China
| | - Zhang Yuan
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, China
| | - Yunchao Zhang
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, China
| | - Yassin Mbululo
- Department of Geography and Environmental Studies, Solomon Mahlangu College of Science and Education, Sokoine University of Agriculture, Morogoro, Tanzania
| | - Mariama Janneh
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, China
- School of Environmental Studies, China University of Geosciences, Wuhan, China
| | - Shihua Qi
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, China.
- School of Environmental Studies, China University of Geosciences, Wuhan, China.
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Nyantakyi AJ, Wiafe S, Akoto O, Fei-Baffoe B. Heavy Metal Concentrations in Fish from River Tano in Ghana and the Health Risks Posed to Consumers. JOURNAL OF ENVIRONMENTAL AND PUBLIC HEALTH 2021; 2021:5834720. [PMID: 34790243 PMCID: PMC8592689 DOI: 10.1155/2021/5834720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 09/06/2021] [Accepted: 10/06/2021] [Indexed: 11/17/2022]
Abstract
Appreciable levels of trace metals have been reported in the Tano basin, but data on the corresponding levels in fish and the risk they pose to consumers are limited. The levels of 7 trace metals in 18 fish muscles were assessed between November 2016 and October 2017 using acid digestion and PerkinElmer (PinAACle 900T) Atomic Absorption Spectrophotometry. Apart from Cu, all the metals studied were detected in all fish samples. The levels of Cr, As, and Hg were higher than the acceptable levels of fish muscles. Cr concentration ranged from 16.10 ± 0.2 mg/kg in Clarias gariepinus to 57.9 ± 4.2 mg/kg in Sarotherodon galilaeus. The levels of As ranged from 1.01 ± 0.08 in Clarias gariepinus to 3.00 ± 0.01 mg/kg in Mormyrus rume. Hg level was 0.58 ± 0.69 mg/kg in Oreochromis niloticus and 2.52 ± 0.70 mg/kg in Ctenopoma kingsleyae. However, Pb, Zn, and Cd concentrations were below the Food and Agriculture Organization limits with low target hazard quotients in all fish samples, suggesting no possible noncarcinogenic risks to adult consumers. Possible noncarcinogenic and carcinogenic health risks were recorded for As, Hg, and Cr in all fish species. Strong associations were observed between Hg, As, Zn, and Cr and between Pb and Cd suggesting a possible common source. Mormyrus rume fish species was under stress in the river, but the remaining species were in good condition. Periodic monitoring of trace metal concentrations in fish and enforcement of the buffer zone policy are recommended.
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Affiliation(s)
- A. J. Nyantakyi
- Environmental Protection Agency, P. O. Box GS 166, Ahafo Regional Office, Accra, Ghana
| | - S. Wiafe
- Sunyani Technical University, Sunyani, Ghana
| | - O. Akoto
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Bernard Fei-Baffoe
- Department of Environmental Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
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El Megid AA, Abd Al Fatah ME, El Asely A, El Senosi Y, Moustafa MMA, Dawood MAO. Impact of pyrethroids and organochlorine pesticides residue on IGF-1 and CYP1A genes expression and muscle protein patterns of cultured Mugil capito. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 188:109876. [PMID: 31704319 DOI: 10.1016/j.ecoenv.2019.109876] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 10/16/2019] [Accepted: 10/25/2019] [Indexed: 06/10/2023]
Abstract
This study aimed to assess the levels of pyrethroids and organochlorine residues in the tissues of cultured Mugil capito and in water samples obtained from three different sites (Al-Hamol, Al-Riad and Sidi Salem; referred to as Area 1, Area 2, and Area 3, respectively) in the Delta region, Egypt. The study also assessed the biochemical markers in exposed mullet and evaluated the impact of these residues on the expression of insulin-like growth factor 1 (IGF-1) in muscle and cytochrome P4501A (CYP1A) in liver tissues using qRT-PCR and SDS-PAGE methods. The results revealed that pesticide residue levels in the water were variable, but were lower than detected levels in fish. Significant (P < 0.05) differences were found across the three study areas in terms of serum ALT, but the serum AST level was not significantly (P > 0.05) elevated in all study regions. Serum creatinine and urea levels were significantly (P < 0.05) elevated in area 3. Furthermore, glutathione and malondialdehyde concentrations significantly increased (P < 0.05) in liver tissues in area 3. Using the qRT-PCR technique, the results revealed that the expression level of IGF-1 was most significant in area 3, while the expression level of CYP1A was most significant in area 1. The protein profile showed some differences in band numbers and molecular weights of protein bands across different regions. Overall, the alteration in biochemical parameters revealed pesticide interference with the metabolic processes of fish. Furthermore, the pesticide pollution had an effect on the expression of IGF-1 and CYP1A genes and led to changes in the protein profile. Therefore, these markers can be used to monitor fish distress following exposure to the pollutant.
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Affiliation(s)
- Afaf Abd El Megid
- Department of Biochemistry, Faculty of Veterinary Medicine, Benha University, Egypt
| | | | - Amel El Asely
- Department of Aquatic Animal Diseases and Management, Faculty of Veterinary Medicine, Benha University, Egypt
| | - Yakout El Senosi
- Department of Biochemistry, Faculty of Veterinary Medicine, Benha University, Egypt
| | - Mahmoud M A Moustafa
- Department of Genetics and Genetic Engineering, Faculty of Agriculture, Benha University, Egypt
| | - Mahmoud A O Dawood
- Department of Animal Production, Faculty of Agriculture, Kaferelshiekh University, Kaferelshiekh, Egypt.
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Zeyad MT, Kumar M, Malik A. Mutagenicity, genotoxicity and oxidative stress induced by pesticide industry wastewater using bacterial and plant bioassays. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2019; 24:e00389. [PMID: 31763201 PMCID: PMC6864361 DOI: 10.1016/j.btre.2019.e00389] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 10/21/2019] [Accepted: 10/21/2019] [Indexed: 12/25/2022]
Abstract
Atomic absorption spectrophotometer and gas chromatography analysis revealed the presence of heavy metals, organochlorine and organophosphate pesticides in industrial wastewater. XAD, Dichloromethane and n-Hexane extracted wastewater were analysed for genotoxic potential using Ames Salmonella/mammalian microsome test. The XAD concentrated sample displayed remarkable mutagenic activity compared to solvent assisted liquid-liquid extraction. Strain TA98 was found utmost sensitive towards all extracts. Wastewater induced chromosomal aberrations in roots of Allium cepa showed significant (p < 0.05) decrease in mitotic index. Seeds of Vigna radiata germinated on soft agar plates treated with different concentration of wastewater showed significant reduction in germination (52 %), seedling vigor index (76 %), radicle length (56 %), plumule length (47 %), biomass of radicle (64 %) and plumule (57%) at highest wastewater concentration. Propidium iodide stained V. radiata roots showed oxidative stress induced by wastewater under CLS microscopy. Further, genotoxicity of wastewater was confirmed by plasmid nicking assay using pBR322 plasmid.
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Affiliation(s)
- Mohammad Tarique Zeyad
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh, UP-202002, India
| | - Murugan Kumar
- National Bureau of Agriculturally Important Microorganisms, Kushmaur, Mau, UP-275103, India
| | - Abdul Malik
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh, UP-202002, India
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Milhome MAL, Vieira SKV, Reges BM, Fernandes DR, Uchoa MLP, Pinheiro AI, Castro RC, Silva VPA, Nobre CA, Menezes MGG, Silva RO, do Nascimento RF. Multiresidue analysis and evaluation of the matrix effect on 20 pesticides in Brazilian maize ( Zea mays L.) flour. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2019; 54:892-897. [PMID: 31305217 DOI: 10.1080/03601234.2019.1640586] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Maize consists of a cereal widely used in the preparation of different food products. Brazil is one of the world's largest maize producers. Several types of pesticides have been applied in maize crop, which can lead to the contamination of the derived products. The present work aims at the validation of multiresidue method to analyze the matrix effect and level of pesticides in maize flour. Twenty residues were investigated in samples commercialized in the state of Ceará, Brazil. The method was satisfactorily validated, according to parameters recommended by European Union. About 55% of the pesticides had an intense negative matrix effect. Multiresidue analyzes showed the presence of traces of fenitrotion in 20% of maize flour samples. Detected levels were below maximum residue limits recommended for maize. The results indicate that maize products need continuous monitoring to ensure food security.
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Affiliation(s)
- M A L Milhome
- Departamento de Tecnologia de Alimentos, Instituto Federal de Educação, Ciência e Tecnologia do Ceará-IFCE, Limoeiro do Norte, Brasil
| | - S K V Vieira
- Departamento de Tecnologia de Alimentos, Instituto Federal de Educação, Ciência e Tecnologia do Ceará-IFCE, Limoeiro do Norte, Brasil
| | - B M Reges
- Departamento de Tecnologia de Alimentos, Instituto Federal de Educação, Ciência e Tecnologia do Ceará-IFCE, Limoeiro do Norte, Brasil
| | - D R Fernandes
- Departamento de Tecnologia de Alimentos, Instituto Federal de Educação, Ciência e Tecnologia do Ceará-IFCE, Limoeiro do Norte, Brasil
| | - M L P Uchoa
- Departamento de Tecnologia de Alimentos, Instituto Federal de Educação, Ciência e Tecnologia do Ceará-IFCE, Limoeiro do Norte, Brasil
| | - A I Pinheiro
- Fundação Núcleo de Tecnologia Industrial do Ceará (NUTEC), Fortaleza, Brasil
| | - R C Castro
- Fundação Núcleo de Tecnologia Industrial do Ceará (NUTEC), Fortaleza, Brasil
| | - V P A Silva
- Fundação Núcleo de Tecnologia Industrial do Ceará (NUTEC), Fortaleza, Brasil
| | - C A Nobre
- Fundação Núcleo de Tecnologia Industrial do Ceará (NUTEC), Fortaleza, Brasil
| | - M G G Menezes
- Departamento de Química Analítica e Físico Química, Universidade Federal do Ceará, Fortaleza, Brasil
| | - R O Silva
- Departamento de Química Analítica e Físico Química, Universidade Federal do Ceará, Fortaleza, Brasil
| | - R F do Nascimento
- Departamento de Química Analítica e Físico Química, Universidade Federal do Ceará, Fortaleza, Brasil
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11
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Chen H, Ling Y, Zhang F, Liu T, Wang JF, Wu HQ, Hong YH, Cheng Y. Simultaneous Detection of Eight Prohibited Flavor Compounds in Foodstuffs Using Gas Chromatography-Tandem Mass Spectrometry. J Food Prot 2019; 82:331-338. [PMID: 30688535 DOI: 10.4315/0362-028x.jfp-18-221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A multiflavor detection method, using gas chromatography-triple quadrupole tandem mass spectrometry (GC-MS/MS), has been developed for the simultaneous identification and quantification of eight prohibited flavor compounds in daily foods. Under the optimized extraction conditions, samples were purified directly through membrane filtration. Variables affecting the GC-MS/MS were optimized to obtain better separation. The excellent selectivity and sensitivity achieved in multiple reactions monitoring mode allowed satisfactory confirmation and quantitation. In this study, the linear ranges of the target compounds were 0.05 to 500 ng/L with good correlation coefficients ( R2 > 0.999). The limits of detection of target compounds ranged from 0.005 to 0.2 μg/kg. The average recoveries were in the range of 80.2 to 110.6% (beef jerky), 82.3 to 94.1% (cod liver oil), and 83.6 to 104.1% (candy).
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Affiliation(s)
- Hong Chen
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, 11 Ronghua South Road, Beijing 100176, People's Republic of China
| | - Yun Ling
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, 11 Ronghua South Road, Beijing 100176, People's Republic of China
| | - Feng Zhang
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, 11 Ronghua South Road, Beijing 100176, People's Republic of China
| | - Tong Liu
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, 11 Ronghua South Road, Beijing 100176, People's Republic of China
| | - Jian-Feng Wang
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, 11 Ronghua South Road, Beijing 100176, People's Republic of China
| | - Han-Qiu Wu
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, 11 Ronghua South Road, Beijing 100176, People's Republic of China
| | - Yun-He Hong
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, 11 Ronghua South Road, Beijing 100176, People's Republic of China
| | - Yan Cheng
- Institute of Food Safety, Chinese Academy of Inspection & Quarantine, 11 Ronghua South Road, Beijing 100176, People's Republic of China
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Chormey DS, Bodur S, Baskın D, Fırat M, Bakırdere S. Accurate and sensitive determination of selected hormones, endocrine disruptors, and pesticides by gas chromatography-mass spectrometry after the multivariate optimization of switchable solvent liquid-phase microextraction. J Sep Sci 2018; 41:2895-2902. [PMID: 29774656 DOI: 10.1002/jssc.201800223] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 04/09/2018] [Accepted: 05/07/2018] [Indexed: 01/24/2023]
Abstract
Switchable solvent liquid-phase microextraction was combined with gas chromatography and mass spectrometry to improve the sensitivity and accuracy for the determination of selected endocrine disruptors, pesticides, and hormones. The extraction method was used to complement gas chromatography with mass spectrometry by preconcentrating analytes for trace determinations. A Box-Behnken experimental design was used to evaluate the main variables and their interaction effects, and optimum parameters were selected based on the model of experimented results. Application of optimum extraction conditions to mixed standard solutions yielded limits of detection and quantitation values between 0.20-13 and 0.90-46 ng/mL, respectively. The accuracy and the applicability of the developed method was checked in tap water and two different wastewater samples by spiked recovery tests. The percent recoveries recorded for the analytes were between 91 and 110%, and percent relative standard deviation values were all below 10%. The results indicate that the method can be used for the accurate and sensitive determination of these analytes in the presented matrixes.
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Affiliation(s)
- Dotse Selali Chormey
- Yıldız Technical University, Faculty of Art and Science, Chemistry Department, Istanbul, Turkey
| | - Süleyman Bodur
- Yıldız Technical University, Faculty of Art and Science, Chemistry Department, Istanbul, Turkey
| | - Dilgeş Baskın
- Yıldız Technical University, Faculty of Art and Science, Chemistry Department, Istanbul, Turkey
| | - Merve Fırat
- Yıldız Technical University, Faculty of Art and Science, Chemistry Department, Istanbul, Turkey
| | - Sezgin Bakırdere
- Yıldız Technical University, Faculty of Art and Science, Chemistry Department, Istanbul, Turkey
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Isolation, Enrichment and Metagenomic Characterization of Simultaneous DDT and Lindane Degrading Microbial Consortium. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2017. [DOI: 10.22207/jpam.11.4.36] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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14
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Sun T, Sun H, Zhao F. Dispersive solid-phase extraction for the determination of trace organochlorine pesticides in apple juices using reduced graphene oxide coated with ZnO nanocomposites as sorbent. J Sep Sci 2017; 40:3725-3733. [DOI: 10.1002/jssc.201700599] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 07/09/2017] [Accepted: 07/10/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Ting Sun
- College of Chemistry and Chemical Engineering; Anyang Normal University; Anyang P. R. China
| | - Hefeng Sun
- The Ping Mei Senior High School; Chifeng P. R. China
| | - Feng Zhao
- College of Chemistry and Chemical Engineering; Anyang Normal University; Anyang P. R. China
- Henan Province Key Laboratory of New Opto-Electronic Functional Materials; Anyang P. R. China
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15
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3D Imaging with a Sonar Sensor and an Automated 3-Axes Frame for Selective Spraying in Controlled Conditions. J Imaging 2017. [DOI: 10.3390/jimaging3010009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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