Acta Chromatographica最新文献_第8页

Residue characteristics of seven fungicides in cherry tomatoes and vegetable tomatoes 七种杀菌剂在樱桃番茄和蔬菜番茄中的残留特性

IF 1.9 4区化学

Acta Chromatographica Pub Date : 2022-03-24 DOI: 10.1556/1326.2022.01016

L. Chen, Jie Wei, Xuesheng Li, Honghong Li

{"title":"Residue characteristics of seven fungicides in cherry tomatoes and vegetable tomatoes","authors":"L. Chen, Jie Wei, Xuesheng Li, Honghong Li","doi":"10.1556/1326.2022.01016","DOIUrl":"https://doi.org/10.1556/1326.2022.01016","url":null,"abstract":"\u0000 A modified QuEChERS method using a GC-ECD to determine the multiple residues of pyraclostrobin, difenoconazole, dimethomorph and azoxystrobin and to indirectly determine the total residues of maneb, mancozeb and propineb by a GC-FPD (with an S filter) was established and validated. Meanwhile, field trials were conducted in accordance with good agricultural practice (GAP) to study their characteristics of residue degradation under the agricultural climate and cropping system of Guangxi Province. The separation effect of each target peak was good with a linearity range of 0.01–5 mg L−1, a limit of detection (LOD) of 0.003–0.015 mg kg−1 and a limit of quantification (LOQ) of 0.01–0.05 mg kg−1. The average recovery ranges of vegetable tomatoes and cherry tomatoes were 70.5–120.0% and 70.8–119.8%, respectively, with relative standard deviations (RSDs) of less than 7.1%. Field trials of seven fungicides in vegetable and cherry tomatoes showed that the half-lives (t\u0000 \u0000 1/2\u0000 ) of the dithiocarbamate fungicides (metiram, mancozeb, and propineb, defined as total residues determined as CS2), pyraclostrobin, difenoconazole, dimethomorph, and azoxystrobin were in the ranges of 5.2, 12.7–17.8, 7.6–7.9, 6.6–6.9, and 6.3–6.6 d in vegetable tomatoes, respectively. The cherry tomatoes presented ranges of 4.3–4.5, 10.8–11.8, 6.7–7.0, 5.4–5.5, and 5.9–6.2 d, respectively. Combined with the final residue and market monitoring results, the results show that cherry tomatoes have significantly higher terminal residues, initial deposits, and maximum residues of seven fungicides than vegetable tomatoes, and these seven pesticides can be detected in cherry tomatoes purchased from three markets. Therefore, cherry tomatoes may be regarded as representative varieties of tomatoes in realizing residual extrapolation for the establishment of the maximum residue limit (MRL) value of fungicides in tomatoes and for conducting market monitoring.","PeriodicalId":7130,"journal":{"name":"Acta Chromatographica","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45859451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simultaneous densitometric determination of β-sitosterol and lupeol through validated HPTLC method in different plant parts of Uraria picta (Jacq.) Desv. ex DC. – A dashmool species 高效液相色谱法同时密度测定茯苓不同部位中β-谷甾醇和芦皮醇的含量Desv。前女友。-一种水芹属植物

IF 1.9 4区化学

Acta Chromatographica Pub Date : 2022-03-23 DOI: 10.1556/1326.2022.01018

H. Saxena, S. Parihar, G. Pawar, G. Rao

{"title":"Simultaneous densitometric determination of β-sitosterol and lupeol through validated HPTLC method in different plant parts of Uraria picta (Jacq.) Desv. ex DC. – A dashmool species","authors":"H. Saxena, S. Parihar, G. Pawar, G. Rao","doi":"10.1556/1326.2022.01018","DOIUrl":"https://doi.org/10.1556/1326.2022.01018","url":null,"abstract":"\u0000 β-sitosterol (BS) and lupeol (LU) exhibit a number of biological activities and are the important bioactive marker compounds in pharmaceutical science. In the present study, a simple, precise, accurate and validated high performance thin layer chromatographic (HPTLC) method was developed for simultaneous quantification of these two compounds in leaves, stem and roots of Uraria picta, a critically endangered medicinal plant and one of the important constituents of ten plants ayurvedic formulation called Dashmoola. Standards and test samples were applied on TLC aluminum plate precoated with 0.2 mm layer of silica gel 60F254. The plate was run in a twin glass chamber comprising toluene: methanol: chloroform (8:1:1, v/v/v) as a mobile phase. The plates were immersed in anisaldehyde-sulfuric reagent and then heated at 105 °C for 5 min in CAMAG TLC plate heater for appearance of bands. Densitometric scanning was performed at λ\u0000 max = 525 nm using tungsten light source in CAMAG TLC Scanner4 armed with WinCATS software. R\u0000 \u0000 F\u0000 values of BS and LU standards and those of test samples were found to be 0.53 ± 0.01 and 0.63 ± 0.01 respectively. The method was further validated by following the International Conference of Harmonization (ICH) guidelines. For BS and LU, the linear regression data for the calibration plots revealed a satisfactory linear association with r\u0000 2 = 0.995 and 0.998, respectively. Linear range for both BS and LU was 200–600 ng/band. Accuracy of the method was evaluated by performing recovery study at three different levels by standard addition methods with an average recovery of 99.86% and 101.07%. The results revealed that the leaf samples of U. picta contained highest concentration of BS (0.150 ± 0.02%) while its root samples confined the highest concentration of LU (0.149 ± 0.01%). The developed method can be applied for routine and quality control analysis in different herbal formulations containing U. picta species.","PeriodicalId":7130,"journal":{"name":"Acta Chromatographica","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47364094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A simple and sensitive HPLC method for simultaneous quantification of macrocyclic spermidine alkaloids in root, stem and leaf of Tripterygium wilfordii 高效液相色谱法同时测定雷公藤根、茎、叶中大环亚精胺生物碱的含量

IF 1.9 4区化学

Acta Chromatographica Pub Date : 2022-03-23 DOI: 10.1556/1326.2022.01014

Liang Zhang, Weiwei Xu, Hongxia Jiang, Jianqun Liu

引用次数: 2

Validation and quantification of a UPLC-MS/MS method for the simultaneous determination of quinocetone and its main metabolites (3-methylquinoxaline-2-carboxylic acid and dedioxoquinenone) in aquatic products UPLC-MS/MS同时测定水产品中喹诺酮及其主要代谢物(3-甲基喹诺啉-2-羧酸和去二氧喹诺酮)的方法验证及定量

IF 1.9 4区化学

Acta Chromatographica Pub Date : 2022-03-11 DOI: 10.1556/1326.2022.01001

Xiuhui Tian, Dianfeng Han, Yanmei Cui, L. Ren, Fang Jiang, Hui Huang, Xianghong Gong, Jingling Xue, Jiawei Li, Huihui Liu, Yingjiang Xu, Xiaojun Luo, Xiaojing Liu, Xiuzhen Zhang

{"title":"Validation and quantification of a UPLC-MS/MS method for the simultaneous determination of quinocetone and its main metabolites (3-methylquinoxaline-2-carboxylic acid and dedioxoquinenone) in aquatic products","authors":"Xiuhui Tian, Dianfeng Han, Yanmei Cui, L. Ren, Fang Jiang, Hui Huang, Xianghong Gong, Jingling Xue, Jiawei Li, Huihui Liu, Yingjiang Xu, Xiaojun Luo, Xiaojing Liu, Xiuzhen Zhang","doi":"10.1556/1326.2022.01001","DOIUrl":"https://doi.org/10.1556/1326.2022.01001","url":null,"abstract":"\u0000 A sensitive and validated method for determining quinocetone and its main metabolites (3-methylquinoxaline-2-carboxylic acid and dedioxoquinenone) was established in aquatic products using ultra-high-performance liquid chromatography-tandem spectrometry (UHPLC-MS/MS). Samples were extracted with 2.0 mol L−1 hydrochloric acid, then purified on MAX columns. After extraction and purification, the supernatant was evaporated to dry nearly under a gentle stream of nitrogen at 40 °C. Formic acid-acetonitrile-water (0.1/30/70, v/v/v) was adjusted to 1.00 mL final volume. An aliquot (10 μL) was injected into the C18 column for separation with the mobile phase of acetonitrile and 0.5% formic acid in water at 0.25 mL min−1. Calibration curves were linear ranged from 10.00 ng mL−1 to 200.0 ng mL−1 for quinocetone and 3-methylquinoxaline-2-carboxylic acid, and 20.00 ng mL−1 to 400.0 ng mL−1 for dedioxoquinenone. Mean recoveries were 70%–89%, 73%–83% and 72%–84%, respectively. The limit of detection (LOD) was 1.00 μg kg−1, 1.00 μg kg−1 and 2.00 μg kg−1, and quantification (LOQ) were 2.00 μg kg−1, 2.00 μg kg−1 and 4.00 μg kg−1 for quinocetone, 3-methylquinoxaline-2-carboxylic acid, and dedioxoquinenone. Based on the method above, the analytes were determined in Apostichopus japonicus, three fishes (including Ctenopharyngodon idellus, Crucian carp and Oreochromis mossambicus), Penaeus vannamei, Penaeus chinensis, and Chlamys farreri. The method shows good sensitivity, linearity, precision, and accuracy. In short, the proposed method was reliable for the determination of quinocetone, 3-methylquinoxaline-2-carboxylic acid, and dedioxoquinenone in aquatic products.","PeriodicalId":7130,"journal":{"name":"Acta Chromatographica","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42809893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication of magnetic ordered mesoporous carbon for quantitative analysis of acidic phytohormones in mushroom samples prior to their determination by ultra-high-performance liquid chromatography–tandem mass spectrometry 磁性有序介孔碳的制备用于蘑菇样品中酸性植物激素的定量分析——超高效液相色谱-串联质谱法测定

IF 1.9 4区化学

Acta Chromatographica Pub Date : 2022-02-15 DOI: 10.1556/1326.2022.01022

Qianchun Zhang, Yan Chen, Yanqun Yang, Yulan Liu, Ming Wen, Xingyi Wang

{"title":"Fabrication of magnetic ordered mesoporous carbon for quantitative analysis of acidic phytohormones in mushroom samples prior to their determination by ultra-high-performance liquid chromatography–tandem mass spectrometry","authors":"Qianchun Zhang, Yan Chen, Yanqun Yang, Yulan Liu, Ming Wen, Xingyi Wang","doi":"10.1556/1326.2022.01022","DOIUrl":"https://doi.org/10.1556/1326.2022.01022","url":null,"abstract":"\u0000 A novel method was established for analysing trace four acidic phytohormones, namely, indole-3-acetic acid, 3-indolebutyric acid, abscisic acid, and 1-naphthylacetic acid, using magnetic ordered mesoporous carbon (MOMC). MOMC was facilely synthesised via self-assembly strategy with a direct carbonisation process. The properties of MOMC were characterised using various instruments. MOMC exhibited excellent adsorption capacity towards the analytes. Various critical parameters which may influence the enrichment efﬁciency were evaluated, including amount of MOMC, extraction conditions, and desorption conditions. An efficient method based on MOMC magnetic solid-phase extraction coupled with ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC–MS/MS) was developed to analyse the trace four acidic phytohormones, with good correlation coefﬁcients (R\u0000 2 = 0.9965–0.9998) and low limits of detection (0.13–9.7 ng L−1, S/N = 3). Trace acidic phytohormones in Agaricus bisporus and Hypsizygus marmoreus samples were determined with satisfactory recoveries (91.8–108%) and reproducibility (2.6–6.3%). The features indicated that MOMC provides an efficient platform for mushroom sampling; the developed method is convenient, promising, and sensitive for the detection of trace phytohormones in complicated mushroom samples.","PeriodicalId":7130,"journal":{"name":"Acta Chromatographica","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44860876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A new simple liquid chromatographic assay for gentamicin in presence of methylparaben and propylparaben 在对羟基苯甲酸甲酯和对羟基苯丙酯存在下测定庆大霉素的新方法

IF 1.9 4区化学

Acta Chromatographica Pub Date : 2022-02-15 DOI: 10.1556/1326.2022.00999

B. Ivković, Ivana Milutinović, O. Čudina, B. Marković

{"title":"A new simple liquid chromatographic assay for gentamicin in presence of methylparaben and propylparaben","authors":"B. Ivković, Ivana Milutinović, O. Čudina, B. Marković","doi":"10.1556/1326.2022.00999","DOIUrl":"https://doi.org/10.1556/1326.2022.00999","url":null,"abstract":"\u0000 Gentamicin sulfate is a potent broad spectrum aminoglycoside antibiotic which is used against Gram-positive and Gram-negative bacteria. A simple, isocratic HPLC method for separation, identification and determination of gentamicin and parabens (methylparaben and propylparaben) was developed and validated. To our knowledge there is no report about simultaneous determination of those three analytes in pharmaceutical products. The optimum chromatographic conditions were achieved on CN column with a mobile phase consisting of 0.15% triethylamine in 10 mM KH2PO4 aqueous solution (final pH 3.0 adjusted with H3PO4) and methanol in the ratio 70:30 (v/v), providing selective quantification of analytes within 5 min. The method was successfully validated according to ICH guidelines acceptance criteria in terms of selectivity, linearity, accuracy, precision and robustness. The linearity of the method was proved in defined concentrations ranges for gentamicin (0.32–1.04 mg mL−1), methylparaben (0.0072–0.0234 mg mL−1) and propylparaben (0.0008–0.0026 mg mL−1). Relative standard deviations calculated for all analytes in precision testing were <2% (analysis repeatability) and <3% (intermediate precision). Recovery values were between 98.87% and 101.67%. Chromatographic parameters are not significantly influenced by small variations of column temperature, pH and molarity of KH2PO4. Finally, the method was successfully applied for quantitative determination of gentamicin and parabens in commercially available solution for injection. Proposed HPLC method is found to be promising in terms of simplicity, analysis times and non-use of derivatization and ion-pair agents.","PeriodicalId":7130,"journal":{"name":"Acta Chromatographica","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43448797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Development and validation of RP-HPLC method for quantification of trace levels of topical corticosteroids in ambiphilic cream 反相高效液相色谱法测定两亲性乳膏中外用皮质类固醇微量含量的建立与验证

IF 1.9 4区化学

Acta Chromatographica Pub Date : 2022-02-03 DOI: 10.1556/1326.2021.00998

B. Ivković, Milkica Crevar, Anka Cvetanović, Katarina Ubavkić, B. Marković

{"title":"Development and validation of RP-HPLC method for quantification of trace levels of topical corticosteroids in ambiphilic cream","authors":"B. Ivković, Milkica Crevar, Anka Cvetanović, Katarina Ubavkić, B. Marković","doi":"10.1556/1326.2021.00998","DOIUrl":"https://doi.org/10.1556/1326.2021.00998","url":null,"abstract":"\u0000 Corticosteroids are anti-inflammatory and immunosuppressant drugs. Topical corticosteroids formulations (ointments, creams, gels) are used in the treatment of different types of dermatitis and urticaria. Considering their therapeutic and whitening effects, they are frequently used for counterfeiting of cosmetic products. Corticosteroids can cause different local and systemic side effects. HPLC method is often chosen for their analysis, because it is selective, sensitive, precise, simple and fast.\u0000 The aim of this study was optimization and validation of RP-HPLC method with UV detection for determination of trace levels of corticosteroids in ambiphilic creams. This method is used for qualitative and quantitative analysis of evaluated corticosteroids.\u0000 Mometasone furoate, hydrocortisone acetate, fluocinonide, fluocinolone acetonide, betamethasone, betamethasone dipropionate and triamcinolone acetonide were evaluated. Separation was performed on Inertsil® ODS-3V 250 × 4.6 mm, 5 μm chromatographic column. Mobile phase was mixture of acetonitrile and water 50:50 (v/v) with gradient elution and flow rate 1 mL min−1. Column temperature was held on 40 °C and UV detection was performed at 240 nm.\u0000 Selectivity, linearity, accuracy, precision and limit of quantification (LOQ) were evaluated. Method is selective because ambiphilic cream base peaks and corticosteroids peaks were not overlapping. Linearity was confirmed since correlation coefficient was 1 for all compounds. Accuracy and precision were evaluated for hydrocortisone acetate and betamethasone dipropionate. Determined Recovery values were in range of 70–130%. Both RSD values (21.46% and 9.59%) were lower than 30%. Method is highly sensitive since LOQ concentrations were in ng mL−1 range.\u0000 All evaluated parameters of validation were in accordance with regulatory requirements. Validated RP-HPLC method can be used for qualitative and quantitative analysis of selected corticosteroids in ambiphilic creams.","PeriodicalId":7130,"journal":{"name":"Acta Chromatographica","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42582359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Separation of ampicillin on polar-endcapped phase: Development of the HPLC method to achieve its correct dosage in cardiac surgery 氨苄青霉素在极性封端相上的分离：高效液相色谱法在心脏外科手术中的应用

IF 1.9 4区化学

Acta Chromatographica Pub Date : 2022-01-27 DOI: 10.1556/1326.2021.00957

Vendula Kubíčková, Z. Racova, J. Strojil, P. Šantavý, K. Urbanek

{"title":"Separation of ampicillin on polar-endcapped phase: Development of the HPLC method to achieve its correct dosage in cardiac surgery","authors":"Vendula Kubíčková, Z. Racova, J. Strojil, P. Šantavý, K. Urbanek","doi":"10.1556/1326.2021.00957","DOIUrl":"https://doi.org/10.1556/1326.2021.00957","url":null,"abstract":"\u0000 The accurate, simple, and selective reversed phase high performance liquid chromatography (RP-HPLC) has been established and validated for the determination of an antibiotic ampicillin (AMP) in human blood plasma. The SPE extraction was used for the sample preparation. Chromatographic separation was accomplished by a mobile phase containing 15 mM monopotassium phosphate solution of pH 3.3 and methanol (75:25, v/v) in an isocratic mode at a flow rate of 1.4 mL min−1 at 30 °C. The separation was evaluated on a column with a new polar-endcapped C18 stationary phase Arion® Polar C18 or well-known phase Luna® Omega Polar C18. Excellent linearity (R\u0000 2 0.9998) was shown over range 10–300 mg L−1 with mean percentage recovery 90%. Peak shapes were symmetrical in both columns, Arion® Polar C18 and Luna® Omega Polar C18, with asymmetry factor of 1.0 and 1.4, tailing factor of 1.0 and 1.2, and retention factor of 4.6 and 5.6, respectively. The Arion® Polar C18 was almost 1.4-fold more effective than Luna® Omega Polar C18 phase. The LOQ for ampicillin was achieved 10 mg L−1 for Luna® Omega Polar C18 and 5 mg L−1 for Arion® Polar C18 using 20 µL of a solution containing 0.24 mg mL−1 of cephalexin as an internal standard.\u0000 A number of articles dealing with the determination of ampicillin is limited, therefore, this study showed the HPLC method suitable for the determination of AMP in human blood plasma from patient who underwent elective cardiac surgical revascularization. In addition, the determination of AMP was also performed for the first time using an Arion® Polar C18 column, which effectively separated AMP from other compounds present in human blood plasma. This new polar-endcapped phase can help in separation of polar antibiotics or other polar compounds, which are unsuccessfully separated on conventional C18 column, and thus can help during method development.","PeriodicalId":7130,"journal":{"name":"Acta Chromatographica","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41970064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Application of gas chromatography-ion mobility spectrometry in the analysis of food volatile components 气相色谱-离子迁移率光谱法在食品挥发性成分分析中的应用

IF 1.9 4区化学

Acta Chromatographica Pub Date : 2022-01-25 DOI: 10.1556/1326.2022.01005

Xuelian Yang, Tianxin Zhang, Dongdong Yang, Jianchun Xie

引用次数: 2

Cyclodextrin-assisted dispersive liquid-liquid microextraction based on solidification of floating organic droplets coupled with HPLC for the determination of pyrethroid residues in cereals 基于悬浮有机液滴凝固的环糊精辅助分散液液微萃取-高效液相色谱法测定谷物中拟除虫菊酯类杀虫剂残留

IF 1.9 4区化学

Acta Chromatographica Pub Date : 2022-01-24 DOI: 10.1556/1326.2021.00991

Haijuan Jiang, Xinyuan Bi, Xin Huang, Xingle Guo, Ziyu Zou, Ying Li, Xu Jing, Junxue Wu

{"title":"Cyclodextrin-assisted dispersive liquid-liquid microextraction based on solidification of floating organic droplets coupled with HPLC for the determination of pyrethroid residues in cereals","authors":"Haijuan Jiang, Xinyuan Bi, Xin Huang, Xingle Guo, Ziyu Zou, Ying Li, Xu Jing, Junxue Wu","doi":"10.1556/1326.2021.00991","DOIUrl":"https://doi.org/10.1556/1326.2021.00991","url":null,"abstract":"\u0000 A simple, rapid, and environmentally friendly sample preparation method for pyrethroids determination in cereals using cyclodextrin-assisted dispersive liquid-liquid microextraction based on solidification of floating organic droplets coupled with high-performance liquid chromatography was established. The cereal samples were extracted with acetonitrile, cleaned up, and concentrated by green extractant menthol via γ-cyclodextrin assisted extraction process. The extractant menthol dispersed as fine droplets in the cyclodextrin solution and then solidified at room temperature for efficient extraction and convenient collection. The optimized method provided good linearity in the range of 0.01–10 mg kg−1 with limits of detection of 3.5–9.5 μg kg−1. The fortified recoveries of three pyrethroids (i.e., lambda-cyhalothrin, deltamethrin, and bifenthrin) in four cereals (i.e., rice, wheat, maize, and millet) at three levels were in the range of 77.6–101.6% with relative standard deviations of 0.6–6.6%. Overall, the proposed method can be successfully applied for the determination of pyrethroids in cereals.","PeriodicalId":7130,"journal":{"name":"Acta Chromatographica","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42783028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1