Box–Behnken design applied to optimize the ultrasound-assisted extraction of petroleum biomarkers in river sediment samples using green analytical chemistry

2017 ◽  
Vol 9 (40) ◽  
pp. 5859-5867 ◽  
Author(s):  
Fausto M. Araujo ◽  
Mellina D. R. Santos ◽  
Marcone A. L. de Oliveira ◽  
Renato C. Matos ◽  
Maria. A. C. Matos
Keyword(s):  
Analytical Chemistry ◽  
River Sediment ◽  
Green Analytical Chemistry ◽  
Ultrasound Assisted Extraction ◽  
Box Behnken Design ◽  
Sediment Samples ◽  
Assisted Extraction ◽  
Ultrasound Assisted

In this paper, the Box–Behnken design was used to optimize the conditions for the ultrasound-assisted extraction of petroleum biomarkers in sediments. The optimized method is an example of a greener analytical chemistry.

QuEChERS with ultrasound-assisted extraction combined with high-performance liquid chromatography for the determination of 16 polycyclic aromatic hydrocarbons in sediment

2021 ◽  
Author(s):  
Ling Wu ◽  
Qiurong He ◽  
Jing Zhang ◽  
Yongxin Li ◽  
Weiqing Yang ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Aromatic Hydrocarbons ◽  
High Performance ◽  
Ultrasound Assisted Extraction ◽  
Sediment Samples ◽  
Assisted Extraction ◽  
Polycyclic Aromatic ◽  
Ultrasound Assisted

Abstract Background Polycyclic aromatic hydrocarbons (PAHs) have attracted worldwide attention due to their carcinogenic, teratogenic and mutagenic effects, environmental persistence and bioaccumulation characteristics. Therefore, the sensitive, reliable and rapid detection of PAHs in sediment is of great importance. Objective To develop a high-performance liquid chromatography (HPLC) with fluorescence and ultraviolet detection after QuEChERS treatment for simultaneous determination of 16 U.S. Environmental Protection Agency priority PAHs in sediment samples. Methods The samples were ultrasonically extracted with acetone and then the supernatant was purified with a modified QuEChERS method. After centrifugation, the supernatant was injected into the HPLC system for analysis. The separation was accomplished on a ZORBAX Eclipse PAH column (150 × 4.6 mm, 3.5 μm) and the column temperature was set at 30 °C. The flow rate of the mobile phase consisting of water and acetonitrile in gradient elution mode was fixed at 0.9 mL/min. Detection was conducted on an ultraviolet detector and a fluorescence detector simultaneously. The qualitative analysis was based on retention time and the quantification was based on standard curves. Results Under the optimal conditions, this method showed good linearities in the range of 10–200 μg/L with correlation coefficients greater than 0.9993. The method had the limits of detection (LODs) ranging from 0.00108 to 0.314 ng/g. The mean recoveries ranged from 78.4 to 117% with the intra-day and inter-day relative standard deviations (RSDs) of 0.592–10.7 and 1.01–13.0%, respectively. The proposed method was successfully applied to the detection of 16 PAHs in sediment samples collected from the Funan River in Chengdu, China with the total contents of 431 to 2143 ng/g·dw. Conclusions The established method is simple, rapid, environment-friendly and cost- effective. It can be applied to the analysis of 16 PAHs in sediment samples. Highlights A method of QuEChERS with ultrasound-assisted extraction combined with HPLC has been established for the analysis of 16 PAHs in sediment samples and the proposed method has been successfully applied to the analysis PAHs in real sediment samples.

Ultrasound assisted extraction for the determination of mercury in sediment samples employing cold vapour atomic absorption spectrometry

2016 ◽  
Vol 8 (35) ◽  
pp. 6554-6559 ◽  
Author(s):  
Danilo J. Leao ◽  
Mario M. Silva Junior ◽  
Jucelino B. Silva Junior ◽  
Daiane A. F. de Oliveira ◽  
Antonio F. S. Queiroz ◽  
...  
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Extraction Procedure ◽  
Absorption Spectrometry ◽  
Ultrasound Assisted Extraction ◽  
Sediment Samples ◽  
Assisted Extraction ◽  
Cold Vapour ◽  
Ultrasound Assisted

An extraction procedure involving ultrasound assisted radiation was proposed for the determination of mercury in river sediment samples using cold vapour atomic absorption spectrometry (CV AAS).

scholarly journals Optimization of a Green Ultrasound-Assisted Extraction of Different Polyphenols from Pistacia lentiscus L. Leaves Using a Response Surface Methodology

Plants ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1482
Author(s):  
Cassandra Detti ◽  
Luana Beatriz dos Santos Nascimento ◽  
Cecilia Brunetti ◽  
Francesco Ferrini ◽  
Antonella Gori
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Industrial Applications ◽  
Pistacia Lentiscus ◽  
Ultrasound Assisted Extraction ◽  
Box Behnken Design ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Time Decrease

Pistacia lentiscus leaves are used in several applications, thanks to their polyphenolic abundance. Thiswork aimed to characterize the polyphenols and to optimize the extraction conditions to shorten the time, decrease the consumption of solvent, and to maximize the yield of different classes of phenolics, which have diverse industrial applications. The variables were optimized by applying a Box–Behnken design. Galloyl and myricetin derivatives were the most abundant compounds, and two new tetragalloyl derivatives were identified by LC-MS/MS. According to the models, the maximum yields of polyphenols (51.3 ± 1.8 mg g−1 DW) and tannins (40.2 ± 1.4 mg g−1 DW) were obtained using 0.12 L g−1 of 40% ethanol at 50 °C. The highest content of flavonoids (10.2 ± 0.8 mg g−1 DW) was obtained using 0.13 L g−1 of 50% ethanol at 50 °C, while 0.1 L g−1 of 30% ethanol at 30 °C resulted in higher amounts of myricitrin (2.6 ± 0.19 mg g−1 DW). Our optimized extraction decreased the ethanolic fraction by 25% and halved the time compared to other methods. These conditions can be applied differently to obtain P. lentiscus extracts richer in tannins or flavonoids, which might be employed for various purposes.

scholarly journals Optimization of Ultrasound-Assisted Extraction of Phenolic Antioxidants from Lotus corniculatus

2019 ◽  
Vol 92 (3) ◽  
pp. 369-377
Author(s):  
Barbara Fumić ◽  
Mario Jug ◽  
Marijana Zovko Končić
Keyword(s):  
Phenolic Compounds ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Lotus Corniculatus ◽  
Extraction Yield ◽  
Phenolic Antioxidants ◽  
Ultrasound Assisted Extraction ◽  
Box Behnken Design ◽  
Assisted Extraction ◽  
Ultrasound Assisted

Ultrasound-assisted extraction of phenolic antioxidants from Lotus corniculatus was optimized using response surface methodology. The extraction was performed according to the Box–Behnken design with ethanol concentration, temperature, and pH, as independent variables. The responses were extraction yield, DPPH radical scavenging activity (RSA) IC50 and content of different phenolic compounds (total phenols, flavonoids and phenolic acids, as well as quercetin, kaempferol and genistein derivatives). The models were used to calculate best conditions for maximal extraction of phenolic compounds and antiradical activity. Use of the optimized extraction parameters increased the content of quercetin and kaempferol derivatives more than tenfold (from 6.07 to 65.10 mg mL–1 and 6.69 to 92.75 mg mL–1, respectively). The results of this work stress the importance of careful selection of conditions for flavonoids extraction. Abundance of bioactive phenolics in L. corniculatus extracts obtained under optimized extraction conditions opens the possibility for wider utilization of this plant.

scholarly journals Optimization of ultrasound - assisted extraction of phenolic compounds from wood apple pulp: Identification of phytochemicals using GC-MS

2019 ◽  
Vol 25 (4) ◽  
pp. 361-368
Author(s):  
Anbarasi Karunanithi ◽  
Sivakumar Venkatachalam
Keyword(s):  
Phenolic Compounds ◽  
Octanoic Acid ◽  
Vaccenic Acid ◽  
Phytochemical Screening ◽  
Process Variables ◽  
Ultrasound Assisted Extraction ◽  
Box Behnken Design ◽  
Bioactive Component ◽  
Assisted Extraction ◽  
Ultrasound Assisted

In the present work, ultrasound-assisted extraction (UAE) was employed to extract the phenolic compounds from wood apple pulp. A Box-Behnken design was used to optimize the process variables. The results revealed that UAE have significantly higher TPC (17.41?0.13 mg GAE/g dW) and TFC (6.73?0.19 mg RE/g dW) in comparison with solvent extraction that gave noticeably lower TPC (12.01?0.17 mg GAE/g dW) and TFC = 4.47?0.09 mg RE/g dW). Optimally obtained extracts of wood apple pulp were subjected to phytochemical screening and it was found that bicyclo[2.2.1]heptane, 2-(1-buten-3-yl)-serverogenin acetate, 4H-pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl-, L-(+)- -ascorbic acid 2,6-dihexadecanoate, cis-vaccenic acid, thiopene, 2-propyl- -phenol, 2,4-bis(1,1-dimethylethyl) and octanoic acid were present only in UAE extracts. Since the bioactive component presence is remarkably higher in UAE compared to other techniques, UAE seems to be a better method for the extraction of phenolic compounds from wood apple pulp.

The analysis of faecal sterols in sediment samples by HPLC-UV using ultrasound-assisted treatment

2014 ◽  
Vol 6 (24) ◽  
pp. 9581-9587 ◽  
Author(s):  
Michele F. Resende ◽  
Mellina D. R. Santos ◽  
Renato C. Matos ◽  
Maria A. C. Matos
Keyword(s):  
Uv Detector ◽  
Ultrasound Assisted Extraction ◽  
Sediment Samples ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Faecal Sterols

A method was developed for the analysis of faecal sterols in sediment samples by ultrasound-assisted extraction and quantification by HPLC with a UV detector.

Box–Behnken design applied to ultrasound-assisted extraction for the determination of polycyclic aromatic hydrocarbons in river sediments by gas chromatography/mass spectrometry

2014 ◽  
Vol 6 (6) ◽  
pp. 1650-1656 ◽  
Author(s):  
Mellina D. R. Santos ◽  
Marcos R. F. Cerqueira ◽  
Marcone A. L. de Oliveira ◽  
Renato C. Matos ◽  
Maria A. C. Matos
Keyword(s):  
Aromatic Hydrocarbons ◽  
River Sediments ◽  
Gas Chromatography Mass Spectrometry ◽  
Ultrasound Assisted Extraction ◽  
Box Behnken Design ◽  
Ultrasonic Bath ◽  
Assisted Extraction ◽  
Polycyclic Aromatic ◽  
Ultrasound Assisted

This paper describes the optimization of the extraction of PAHs in sediment samples from a river by applying an ultrasonic bath for quantification by GC/MS.

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