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Sandro Navickiene

Bio: Sandro Navickiene is an academic researcher from Universidade Federal de Sergipe. The author has contributed to research in topics: Matrix (chemical analysis) & High-performance liquid chromatography. The author has an hindex of 19, co-authored 64 publications receiving 1109 citations. Previous affiliations of Sandro Navickiene include Sao Paulo State University & University of Cagliari.


Papers
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Journal ArticleDOI
TL;DR: Two simple methods were developed to determine 11 pesticides in coconut water, a natural isotonic drink rich in salts, sugars and vitamins consumed by the people and athletes, and no detectable amounts of the pesticides were found in any samples under the conditions described.

142 citations

Journal ArticleDOI
TL;DR: In this paper, a study was carried out to evaluate preliminarily the BTEX, polycyclic aromatic hydrocarbons (PAHs), and metals contents in produced water samples taken from effluents of the Bonsucesso treatment plant located in the city of Carmopolis, North-east of Brazil.

128 citations

Journal ArticleDOI
30 Jul 2008-Talanta
TL;DR: A simple and effective extraction method based on matrix solid-phase dispersion (MSPD) was developed to determine dimethoate, malathion, lufenuron, carbofuran, 3-hydroxycarb ofuran, thiabendazole, difenoconazole and trichlorfon in coconut pulp using gas chromatography-mass spectrometry with selected ion monitoring (GC/MS, SIM).

63 citations

Journal ArticleDOI
TL;DR: The metal-organic framework tested for extraction of pyrimicarb, procymidone, malathion, methyl parathion and α- and β-endosulfan from lettuce was linear over the range tested, with analysis using GC/MS in SIM mode.
Abstract: The metal–organic framework ∞[(La0.9Eu0.1)2(DPA)3(H2O)3] was tested for extraction of pyrimicarb, procymidone, malathion, methyl parathion and α- and β-endosulfan from lettuce, with analysis using GC/MS in SIM mode. Experiments were carried out in triplicate at two fortification levels (0.1 and 0.5 mg/kg), and resulted in recoveries in the range of 78–107%, with RSD values between 1.6 and 8.0% for ∞[(La0.9Eu0.1)2(DPA)3(H2O)3] sorbent. Detection and quantification limits ranged from 0.02 to 0.05 mg/kg and from 0.05 to 0.10 mg/kg, respectively, for the different pesticides studied. The method developed was linear over the range tested (0.05–10.0 μg/mL), with correlation coefficients ranging from 0.9990 to 0.9997. Comparison between ∞[(La0.9Eu0.1)2(DPA)3(H2O)3] and conventional sorbent (silica gel) showed better performance of the ∞[(La0.9Eu0.1)2(DPA)3(H2O)3] polymeric sorbent for all pesticides tested.

55 citations

Journal ArticleDOI
TL;DR: A study on the presence of herbicides, namely simazine, metribuzin, metolachlor, trifluralin, atrazine and two metabolites, deisopropylatrazine (DIA) and DEA, was performed in ground and surface waters from Primavera do Leste region, Mato Grosso state (Middle West of Brazil).
Abstract: A study on the presence of herbicides, namely simazine, metribuzin, metolachlor, trifluralin, atrazine and two metabolites, deisopropylatrazine (DIA) and deethylatrazine (DEA), was performed in ground and surface waters from Primavera do Leste region, Mato Grosso state (Middle West of Brazil). The analytical procedure was based on solid-phase extraction (SPE) with Sep-Pak C18 disposable cartridges and ethyl acetate for elution solvent. Residue levels were determined by gas chromatography with nitrogen-phosphorus detection. For most of the pesticides average recoveries at different fortification levels were >70% with relative standard deviation <19%. The recoveries of DIA and trifluralin in water were 25% and 56%, respectively, which were attributed to the incomplete retention of DIA and strong retention on the sorbing material and high volatility of trifluralin. Detection limits ranged from 0.023 to 0.088 µg L-1. This method was applied for the analysis of 5 superficial water samples and 28 groundwater samples, in places used for human consumption without previous treatment, collected in Primavera do Leste, Mato Grosso, Brazil. Results indicated that the highest level of contamination in a water sample was 1.732 µg L-1 for metolachlor, while metribuzin was the most frequently detected herbicide with maximum concentration of 0.351 µg L-1.

52 citations


Cited by
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Journal ArticleDOI
TL;DR: This Account summarizes the research on the analytical applications of MOFs ranging from sampling to chromatographic separation, and develops an in situ hydrothermal growth approach to fabricate thin films of MOF-199 on etched stainless steel wire for solid-phase microextraction of volatile benzene homologues with large enhancement factors and wide linearity.
Abstract: In modern analytical chemistry researchers pursue novel materials to meet analytical challenges such as improvements in sensitivity, selectivity, and detection limit. Metal–organic frameworks (MOFs) are an emerging class of microporous materials, and their unusual properties such as high surface area, good thermal stability, uniform structured nanoscale cavities, and the availability of in-pore functionality and outer-surface modification are attractive for diverse analytical applications. This Account summarizes our research on the analytical applications of MOFs ranging from sampling to chromatographic separation.MOFs have been either directly used or engineered to meet the demands of various analytical applications. Bulk MOFs with microsized crystals are convenient sorbents for direct application to in-field sampling and solid-phase extraction. Quartz tubes packed with MOF-5 have shown excellent stability, adsorption efficiency, and reproducibility for in-field sampling and trapping of atmospheric form...

594 citations

Journal ArticleDOI
TL;DR: This overview evaluates the capabilities of mass spectrometry in combination with gas chromatography and liquid chromatography for the determination of a multitude of pesticides and shows a wider scope and better sensitivity if detection is based on LC-MS.
Abstract: This overview evaluates the capabilities of mass spectrometry (MS) in combination with gas chromatography (GC) and liquid chromatography (LC) for the determination of a multitude of pesticides. The selection of pesticides for this assessment is based on the status of production, the existence of regulations on maximum residue levels in food, and the frequency of residue detection. GC-MS with electron impact (EI) ionization and the combination of LC with tandem mass spectrometers (LC-MS/MS) using electrospray ionization (ESI) are identified as techniques most often applied in multi-residue methods for pesticides at present. Therefore, applicability and sensitivity obtained with GC-EI-MS and LC-ESI-MS/MS is individually compared for each of the selected pesticides. Only for one substance class only, the organochlorine pesticides, GC-MS achieves better performance. For all other classes of pesticides, the assessment shows a wider scope and better sensitivity if detection is based on LC-MS.

537 citations

Journal ArticleDOI
TL;DR: This review focuses on recent progress achieved in MOF research with respect to general sensing principles and analytical performance, and discusses future industrial applications in sensing that are of immense research interest.
Abstract: A metal organic framework (MOF) represents a new class of hybrid material built from metal ions with well-defined coordination geometry and organic bridging ligands Over the past few years, MOFs have attracted a great deal of attention due to their intriguing framework architecture, topology, and optical properties MOFs have provided promising perspectives in various research fields, such as catalysis, energy storage, drug-delivery systems, non-linear optics, and gas storage Recently, the application of MOFs was further extended to cover new, interesting fields of sensing toward various target components, including small molecules, solvents, pesticides, explosives, and biological markers In this review, we focus on recent progress achieved in MOF research with respect to general sensing principles and analytical performance This review also discusses future industrial applications in sensing that are of immense research interest

399 citations

Journal ArticleDOI
TL;DR: Results published indicate that in some sites, intrinsic bioremediation can reduce the monoaromatic compounds content of contaminated water to reach standard levels of potable water, however, engineering biOREmediation is faster and more efficient.

367 citations

Journal ArticleDOI
TL;DR: This review serves to provide a compilation of recent research concerning the behavior of bees in relation to resins and propolis, focusing more on the bees themselves and the potential evolutionary benefits of resin collection.
Abstract: Social immunity, which describes how individual behaviors of group members effectively reduce disease and parasite transmission at the colony level, is an emerging field in social insect biology. An understudied, but significant behavioral disease resistance mechanism in honey bees is their collection and use of plant resins. Honey bees harvest resins with antimicrobial properties from various plant species and bring them back to the colony where they are then mixed with varying amounts of wax and utilized as propolis. Propolis is an apicultural term for the resins when used by bees within a hive. While numerous studies have investigated the chemical components of propolis that could be used to treat human diseases, there is a lack of information on the importance of propolis in regards to bee health. This review serves to provide a compilation of recent research concerning the behavior of bees in relation to resins and propolis, focusing more on the bees themselves and the potential evolutionary benefits of resin collection. Future research goals are also established in order to create a new focus within the literature on the natural history of resin use among the social insects and role that propolis plays in disease resistance.

337 citations