Benzoxazine Porous Organic Polymer as an Efficient Solid-Phase Extraction Adsorbent for the Enrichment of Chlorophenols from Water and Honey Samples

2020 ◽  
Author(s):  
Weihua Liu ◽  
Shuangju Song ◽  
Lin Hao ◽  
Chun Wang ◽  
Qiuhua Wu ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Water Samples ◽  
High Performance ◽  
Solid Phase ◽  
Organic Polymer ◽  
Array Detector ◽  
Phase Extraction ◽  
Porous Organic Polymer ◽  
Alternative Approach ◽  
Relative Standard

Abstract Porous organic polymers have gained great research interest in the field of adsorption. A benzoxazine porous organic polymer (BoxPOP) constructed from p-phenylenediamine, 1,3,5-trihydroxybenzene and paraformaldehyde was fabricated and explored as an adsorbent for solid-phase extraction (SPE) of four chlorophenols from water and honey samples. Under the optimized SPE conditions, the response linearity for the analysis of the SPE extract of the chlorophenols by high performance liquid chromatography-diode array detector was observed in the range of 0.2–40.0 ng mL−1 for water samples and 5.0–400.0 ng g−1 for honey samples. The method detection limits of the analytes were 0.06–0.08 ng mL−1 for water samples and 1.5–2.0 ng g−1 for honey samples. The recoveries of the analytes from fortified water and honey samples ranged from 84.8 to 119.0% with the relative standard deviations below 8.4%. The results indicate that the prepared BoxPOP is an effective adsorbent for the chlorophenols. The established method provides an alternative approach for the determination of chlorophenols in real samples.

Preparation of functional magnetic porous organic polymer as sorbents for mercury speciation followed by HPLC-ICP-MS analysis

2021 ◽  
Author(s):  
Yifeng He ◽  
Man He ◽  
Beibei Chen ◽  
Bin Hu
Keyword(s):  
High Performance ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Mercury Speciation ◽  
Organic Polymer ◽  
Phase Extraction ◽  
Porous Organic Polymer ◽  
Icp Ms ◽  
Magnetic Solid ◽  
Sulfur Containing

A novel sulfur-containing functional core-shell magnetic porous organic polymer (Fe3O4@BD-TpMA-S-SH MOPs) was synthesized as magnetic solid phase extraction (MSPE) sorbent for mercury speciation followed by high performance liquid chromatography (HPLC)...

Application of a novel diol-based porous organic polymer to the determination of trace-level tetracyclines in water

2019 ◽  
Vol 11 (18) ◽  
pp. 2473-2481 ◽  
Author(s):  
Changzheng Cui ◽  
Zan Cao ◽  
Shenping Zhang ◽  
Yaru Hu ◽  
Lei Jiang ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Extraction Efficiency ◽  
Solid Phase ◽  
Organic Polymer ◽  
Phase Extraction ◽  
Trace Level ◽  
Porous Organic Polymer ◽  
Ms Analysis

A novel diol-based porous organic polymer (NTdiol-POP) was used as a new solid phase extraction material to improve extraction efficiency of trace tetracyclines in water before HPLC-MS/MS analysis.

scholarly journals Magnetic Solid Phase Extraction using Magnetic Mesoporous Silica for Preconcentration of Organophosphorus Pesticides

2019 ◽  
Vol 8 (4) ◽  
pp. 6847-6852
Keyword(s):  
Mesoporous Silica ◽  
Solid Phase Extraction ◽  
Water Samples ◽  
High Performance ◽  
Solid Phase ◽  
Organophosphorus Pesticides ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Magnetic Solid ◽  
Mcm 41

The present study describes the synthesis, characterization and application of two mesoporous silica material based coated magnetic nanoparticles namely Fe3O4 -SBA-15 and Fe3O4 -MCM-41 for the simultaneous preconcentration of three selected organophosphorus pesticides (OPPs) namely chlorpyrifos, diazinon and parathion methyl from water samples. The resultant sorbent material was physicochemically and morphologically characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) and N2 adsorption analysis. OPPs pesticides extraction efficiency of two sorbents were evaluated through magnetic solid phase extraction (MSPE) using high performance liquid chromatography with ultraviolet detector (HPLC/UV). The main parameters affecting the sorbent efficiency namely extraction time and desorption solvent were optimized. Comparatively, Fe3O4 -SBA-15 achieved excellent percent recovery (97.5%) compared to the Fe3O4 -MCM-41 (87.1%) under optimum condition respectively. The result appealed that the Fe3O4 -SBA-15 composite was efficient sorbent with good capability for the preconcentration of selected OPPs from water samples.AThe present study describes the synthesis, characterization and application of two mesoporous silica material based coated magnetic nanoparticles namely Fe3O4 -SBA-15 and Fe3O4 -MCM-41 for the simultaneous preconcentration of three selected organophosphorus pesticides (OPPs) namely chlorpyrifos, diazinon and parathion methyl from water samples. The resultant sorbent material was physicochemically and morphologically characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) and N2 adsorption analysis. OPPs pesticides extraction efficiency of two sorbents were evaluated through magnetic solid phase extraction (MSPE) using high performance liquid chromatography with ultraviolet detector (HPLC/UV). The main parameters affecting the sorbent efficiency namely extraction time and desorption solvent were optimized. Comparatively, Fe3O4 -SBA-15 achieved excellent percent recovery (97.5%) compared to the Fe3O4 -MCM-41 (87.1%) under optimum condition respectively. The result appealed that the Fe3O4 -SBA-15 composite was efficient sorbent with good capability for the preconcentration of selected OPPs from water samples.

scholarly journals Determining the Levels of Four Phenylethanoid Glycosides and Five Triterpene Acids in Liuwei Dihuang Capsule Using Solid Phase Extraction with HPLC-UV

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Yong Zhang ◽  
Xian-Liang Zou ◽  
Yong-Li Wang ◽  
Lu Gao ◽  
Gui-Xin Chou
Keyword(s):  
Solid Phase Extraction ◽  
High Performance ◽  
Solid Phase ◽  
Phase Extraction ◽  
Phenylethanoid Glycosides ◽  
Triterpene Acids ◽  
Ultraviolet Detector ◽  
Relative Standard ◽  
Removal Of Impurities

In this study, we used quantitative high-performance liquid chromatography equipped with an ultraviolet detector (HPLC-UV) and solid phase extraction (SPE) to determine the levels of four phenylethanoid glycosides and five triterpene acids in Liuwei Dihuang capsules (LDCs). LDCs were methanol-extracted and purified using a 500 mg/6 mL silica-based C18 SPE cartridge. Two elutions were analyzed on a ChromCore C18 column under two HPLC conditions. To improve the pretreatment clean-up, an array of silica- and polymer-based SPE cartridges were compared. Both wash and elution steps were also optimized to achieve the highest removal of impurities. Under optimal chromatographic conditions, good linearity was achieved for all compounds (correlation coefficient of r ≥ 0.999), with a quantification limit ranging from 0.0076 to 0.418 μg/mL. The method had satisfactory efficiency and reproducibility with recovery rates ranging from 91.6 to 99.3% with a relative standard deviation below 1.5%. Taken together, this demonstrated SPE as a suitable extension of HPLC-UV for the determination of phenylethanoid glycosides and triterpene acids in complex LDCs.

scholarly journals Determination of Imazaquin Residues in Soil by Solid-Phase Extraction and High-Performance Liquid Chromatography

2007 ◽  
Vol 90 (2) ◽  
pp. 568-574 ◽  
Author(s):  
Chen Xuyan ◽  
Hu Jiye ◽  
Li Jianzhong
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Solid Phase Extraction ◽  
High Performance ◽  
Limit Of Detection ◽  
Solid Phase ◽  
Phase Extraction ◽  
Application Rates ◽  
Relative Standard ◽  
Strong Anion Exchange

Abstract A method has been developed for the quantitation of imazaquin residues in soil. The herbicide was extracted from soil with methanolwater (2 + 1, v/v) and cleaned up by strong anion-exchange solid-phase extraction cartridges. Analysis was performed by using high-performance liquid chromatography with ultraviolet detection. Average recoveries through the method ranged from 90.7 to 100.6%, with relative standard deviation equal to or lower than 6.6%. The limit of detection was estimated to be 0.0015 mg/kg, and the minimum quantitation concentration of imazaquin in soil was 0.005 mg/kg. This method was successfully applied to evaluate imazaquin residue levels in soil and its dissipation rates in a soybean field in the Xisanqi District of Beijing, People's Republic of China. The dissipation study showed that the half life of imazaquin in soil was 10.37 0.0135 days at 3 different application rates.

scholarly journals AVALIAÇÃO DA PRESENÇA DE PESTICIDAS N-METILCARBAMATOS E SEUS PRODUTOS DE DEGRADAÇÃO NAS ÁGUAS DA REGIÃO DE PARÁ DE MINAS (MG) BRASIL

2001 ◽  
Vol 11 ◽  
Author(s):  
FABRÍCIO VILELA PARREIRA ◽  
EUCLER B. PANIAGO ◽  
CIOMARA RABELO DE CARVALHO ◽  
ROBSON JOSÉ DE CÁSSIA FRANCO AFONSO
Keyword(s):  
Water Samples ◽  
High Performance ◽  
Solid Phase ◽  
Degradation Products ◽  
Phase Extraction ◽  
Method Detection Limit ◽  
Ultraviolet Detector ◽  
Brazilian Legislation ◽  
Relative Standard ◽  
The City

Os pesticidas N-metilcarbamatos e alguns de seus metabólitos são altamente tóxicos para o homem e o meio ambiente. Por esta razão desenvolveu-se método analítico utilizando extração em fase sólida e cromatografia líquida de alta eficiência com detector de ultravioleta (CLAE/UV) para análise destes compostos em amostras de água. O método apresentou índice de recuperação para 10 compostos de 57 a 99%, com desvio padrão relativo (CV) de 5,67 a 7,67% para n=6. A repetitividade do método forneceu CV entre 5,94 a 8,46% para n=6. O limite de detecção do método (MDL) situou-se na faixa de 0,07 a 0,38 µg/L para 10 compostos. Este método foi aplicado na análise de amostras de águas coletadas na cidade de Pará de Minas-MG, Brasil, e também em alguns pontos selecionados nas bacias dos Rios Paciência e Bom Sucesso, situadas no município de Pará de Minas. Os resultados das análises em amostras de água mostraram-se abaixo dos limites estabelecidos pela legislação brasileira. EVALUATION OF THE PRESENCE OF N-METHYLCARBAMATE PESTICIDES AND DEGRADATION PRODUCTS IN WATERS OF PARÁ DE MINAS (MG) REGION IN BRAZIL Abstract The N-methylcarbamate pesticides and some of the their metabolites are highly toxic for men and environment. Then, an analytical method utilizing solid phase extraction and high performance liquid chromatography with ultraviolet detector (SPE/CLAE/UV) to analyze these compounds in water was developed. The accuracy of the method for 10 compounds varied from 57 to 99%, presenting relative standard deviation (RSD) from 5,67 to 7,67% for n=6. The repeatability supplied RSD among 5,94 to 8,46% for n=6. The method detection limit (MDL) is in the ranging of 0,07 to 0,38 µg/L for 10 compounds. This method was utilized in water samples collected in the city of Pará de Minas (MG) and in several points of the rivers Paciência e Bom Sucesso, situated in Pará de Minas (MG), Brazil. The results of the analysis of water samples are bellow of the limits permitted by Brazilian legislation.

Sign in / Sign up

Export Citation Format

Share Document