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Journal articles on the topic 'Pda Detector'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Mei, Zhonghui, Qingmin Meng, Xiaofei Li, and Lenan Wu. "PDA detector For DS-CDMA cooperative system." Journal of Electronics (China) 26, no. 6 (2009): 812–18. http://dx.doi.org/10.1007/s11767-008-0157-x.

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2

Derbyshire, G. E., W. I. Helsby, A. J. Dent, et al. "Current and Future Energy Dispersive EXAFS Detector Systems." Advances in X-ray Analysis 34 (1990): 177–85. http://dx.doi.org/10.1154/s0376030800014452.

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AbstractThis paper presents a review of the current status of photodiode array systems adapted for Energy Dispersive EXAFS (EDE) using a synchrotron radiation source. The performance of a conventional Reticon PDA is compared with that of a hybrid CCD. The specification of a new detector system for EDE is discussed in the light of experience gained with current linear detectors.

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Ma, Kang, Xiaojia Li, Yiwen Zhang, and Fei Liu. "Determining High-Intensity Sweeteners in White Spirits Using an Ultrahigh Performance Liquid Chromatograph with a Photo-Diode Array Detector and Charged Aerosol Detector." Molecules 25, no. 1 (2019): 40. http://dx.doi.org/10.3390/molecules25010040.

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In China, white spirit is not only an alcoholic drink but also a cultural symbol. A novel and accurate method for simultaneously determining nine sweeteners (most authorized for use in China) in white spirits by ultrahigh performance liquid chromatography (UHPLC) with a photo-diode array detector (PDA) and charged aerosol detector (CAD) was developed. The sweeteners were acesulfame, alitame, aspartame, dulcin, neotame, neohesperidine dihydrochalcone, saccharin, sodium cyclamate, and sucralose. The sweeteners were separated within 16 min using a BEH C18 column and linear gradient-elution progra

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Brink, H. A., C. Trevor, J. Hunt, and P. E. Mooney. "A New High Performance Detector for Electron Energy Loss Spectroscopy." Microscopy and Microanalysis 6, S2 (2000): 212–13. http://dx.doi.org/10.1017/s1431927600033559.

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The serial detectors traditionally used in Electron Energy Loss Spectroscopy (EELS) have mostly been replaced by parallel detection systems, for reasons of efficiency and ease of use. So far most parallel detection systems have been based on fiber or lens coupled Photo Diode Array (PDA). Although these systems have proven satisfactory they have some limitations: 1) high readout noise, 2) limited correction for gain variations and 3) point spread function or cross talk between channels all of which effects the ultimate sensitivity and resolution. This paper discusses a newly developed parallel

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Farida, Ida Nur, and Annisa Muliya. "Validasi Kurkumin Hasil Isolasi Rimpang Kunyit Dengan Kromatografi Cair Kinerja Tinggi Photodiode Array Detector." Jurnal Pengelolaan Laboratorium Pendidikan 5, no. 2 (2023): 50–57. http://dx.doi.org/10.14710/jplp.5.2.50-57.

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Curcumin is the main compound in turmeric and has problems in its stability. The analytical method used to determine curcumin levels is by using high performance liquid Chromatography (HPLC) Photodiode Array Detector (PDA). HPLC has a high separation capability and good reproducibility with a low detection limit. The purpose of this research is that the isolation curcumine determined by HPLC-PDA and has been validated can be applied as a standard in quantitative analysis in the laboratory. The validation parameters specified include accuracy, precision, linearity, detection limits and quantifi

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M., Maste Meenaxi, Gawas Nikhil S., Utkarsh Shashtri, and Poonam Shelar. "RP-HPLC Method Development and Validation for Pioglitazone in Bulk and Marketed Formulation." Der Pharma Chemica 13, no. 6 (2021): 10. https://doi.org/10.5281/zenodo.11072414.

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The work describes a precise, accurate and reproducible Reverse Phase High Performance Liquid Chromatographic (RP-HPLC) method for development and validation of Pioglitazone in tablet dosage form on Lachrome Liquid chromatographic system having PDA-20 A UV/VIS Detector using stationary phase C18 column (300 mm × 3.9 mm, 5 µm, particle size) and acetonitrile:phosphate buffer, (50:50 v/v) as mobile phase at flow rate of 1.00 ml/min and the detection wavelength was 267 nm. The retention time for Pioglitazone was found to be 8.08 min. The method was validated for precision, accuracy, l

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Rao, Tentu Nageswara, Muralidhar Reddy Avuthu, B. Venkata Reddy, and SNVS Murthy. "Forced degradation study of terbinafine HCl by HPLC with PDA detector." Asian Journal of Research in Chemistry 9, no. 11 (2016): 561. http://dx.doi.org/10.5958/0974-4150.2016.00076.6.

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Bilhorn, R. B., J. V. Sweedler, P. M. Epperson, and M. B. Denton. "Charge Transfer Device Detectors for Analytical Optical Spectroscopy—Operation and Characteristics." Applied Spectroscopy 41, no. 7 (1987): 1114–25. http://dx.doi.org/10.1366/0003702874447680.

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This article is the first in a two-part series describing the operation, characteristics, and application of a new class of solid-state multichannel UV-visible detectors. In this paper, charge transfer devices (CTDs) are described. Detector characteristics pertinent to spectroscopic application—including quantum efficiency, read noise, dark count rate, and available formats—are emphasized. Unique capabilities, such as the ability to nondestructively read out the detector array and the ability to alter the effective detector element size by a process called binning, are described. CTDs with pea

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K., Kranthi Kiran* Dr. A. Srinivasa Rao Prof. D. Gowri Sankar. "NEW ANALYTICAL METHOD VALIDATION REPORT AND FORCED DEGRADATION STUDIES FOR ASSAY OF ELVITEGRAVIR, TENOFOVIR, EMTRICITABINE AND COBICISTAT BY RP-UPLC." Indo American Journal of Pharmaceutical Sciences 04, no. 12 (2017): 4662–72. https://doi.org/10.5281/zenodo.1127689.

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The main aim of the present work is to develop and validate a simple, specific, efficient, accurate, and precise stability-indicating rapid reversed phase ultra performance liquid chromatographic method is developed for the simultaneous determination of Elvitegravir, Tenofovir, Emtricitabine, and Cobicistat in its bulk and pharmaceutical combined dosage form with forced degradation studies. The four compounds is separated on a reversed phase Endoversil C18(50 x 2.1mm,1.8µm particle size) column, waters ACQUITY UPLC system with PDA detector and a mobile phase composed of 0.1% OPA: acetoni

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Jäkel, Evelyn, Manfred Wendisch, Mario Blumthaler, Rainer Schmitt, and Ann R. Webb. "A CCD Spectroradiometer for Ultraviolet Actinic Radiation Measurements." Journal of Atmospheric and Oceanic Technology 24, no. 3 (2007): 449–62. http://dx.doi.org/10.1175/jtech1979.1.

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Abstract A new spectroradiometer for spectral measurements of ultraviolet (UV) atmospheric radiation (290–400 nm) using a charge coupled device (CCD) as a detector is introduced. The instrument development is motivated by the need for measurements with (a) high accuracy in the UV-B spectral range (290–315 nm) for photochemistry applications and (b) high temporal resolution in quickly changing atmospheric conditions such as partial cloud cover. The new CCD instrument is mainly intended for airborne use. It allows fast data collection (&lt;300 ms time resolution for each spectrum) with impro

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Masoumi, Saeid, Hassan Hajghassem, Alireza Erfanian, and Ahmad Molaei Rad. "Design and manufacture of TNT explosives detector sensors based on CNTFET." Sensor Review 36, no. 4 (2016): 414–20. http://dx.doi.org/10.1108/sr-01-2016-0014.

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Purpose Miniaturized smart sensors that can perform sensitive and selective real-time monitoring of target analytes are tremendously valuable for various sensing applications. So, the purpose of this paper is to provide details of sensors based on selective nanocoatings by combining trinitrotoluene (TNT) receptors bound to conjugated polydiacetylene (PDA) polymers with single-walled carbon nanotube field-effect transistors (CNTFETs) for detecting explosives TNT. Design/methodology/approach Following an introduction, this paper describes the way of creating an FET with CNTs, which are functiona

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BĚLÁKOVÁ, Sylvie, Karolína BENEŠOVÁ, Renata MIKULÍKOVÁ, and Zdeněk SVOBODA. "Monitoring of changes of ferulic acid content in brewing materials using the UPLC method with PDA detector.." Kvasny Prumysl 56, no. 6 (2010): 266–69. http://dx.doi.org/10.18832/kp2010032.

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Hsing-Tan Liu, Chien-Hsiang Ni, Ya-Peng Wang, et al. "Analysis of the components of commercially traditional herbal tea (Platostoma palustre) in Taiwan." International Journal of Scientific Research Updates 5, no. 2 (2023): 038–41. http://dx.doi.org/10.53430/ijsru.2023.5.2.0034.

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Platostoma palustre jelly is a traditional food. It has been used as folk medicine and is effective against heat-shock, hypertension and diabetes. Therefore, the aim of this study was want to analyze the components of commercially traditional herbal tea (P. palustre) in Taiwan. The commercial herbal tea (P. palustre) was kindly provided by Yueta Agricultural Biotechnology Inc. The detection methods of the components of commercially traditional herbal tea (P. palustre) were followed the analysis protocols in Taiwan Herbal Pharmacopeia (IV). The levels of chlorogenic acid, rosmarinic acid, caffe

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Mac Thi, Thanh Hoa, Hong Ngoc Nguyen Thi, Mai Hoa Duong Thi, and Khanh Cao Cong. "Determination of xanthophylls compounds in dietary supplements by HPLC-PDA." Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam 2, no. 2 (2019): 51–56. http://dx.doi.org/10.47866/2615-9252/vjfc.62.

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An HPLC method using photodiode array detector (PDA) detector has been developed for the&nbsp;determination of astaxanthin, lutein, and zeaxanthin in dietary supplements. These compounds&nbsp;were separated on a C30 chromatography column with ethyl acetate: acetonitrile (12:88, v/v)&nbsp;containing 0.1% n-decanol as the mobile phase. Xanthophyll compounds, usually existing in the&nbsp;form of esters, were saponified in 45% KOH solution (with lutein and zeaxanthin) and 1% (with&nbsp;astaxanthin) at 60&deg;C within 15 minutes, then re-extracted with n-hexane before analyz

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Memon, Almas F., Amber R. Solangi, Saima Q. Memon, Arfana Mallah, and Najma Memon. "A MEKC method for naringenin from natural and biological samples." Analytical Methods 7, no. 11 (2015): 4521–27. http://dx.doi.org/10.1039/c5ay00632e.

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The work reported describes the development of a micellar electrokinetic chromatographic (MEKC) method for the determination of naringenin in real samples including grapefruit juice and human blood serum using a PDA detector.

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Mac Thi, Thanh Hoa, Thanh Nguyen Ha, Ngoc Lan Dang Thi, Thanh Ha Pham Thi, Thanh An Vu Thi, and Khanh Cao Cong. "High performance liquid chromatography analytical method for glutaraldehyde determination in disinfectants." Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam 5, no. 2 (2022): 160–69. http://dx.doi.org/10.47866/2615-9252/vjfc.3912.

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Glutaraldehyde (GA) is commonly used to disinfect surfaces and equipment in industries, agriculture, healthcare, laboratories, etc. To evaluate the quality of products containing GA, a HPLC method using 2,4-diphenylhydrazine derivative was developed. The analyte was separated by CN column with isocratic of acetonitrile and phosphoric acid 0,1% (ratio 50 : 50) and detected by PDA detector using a wavelength of 360&nbsp;nm. The method was validated for specificity, linear curves, precision and accuracy which meet the requirements of AOAC.

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Nisha, M., Mukund Shankar, Nagasathiya Krishnan, Lilly M. Saleena, Mathur Rajesh, and M. Vairamani. "Direct estimation of ethanol as a negative peak from alcoholic beverages and fermentation broths by reversed phase-HPLC." Analytical Methods 8, no. 23 (2016): 4762–70. http://dx.doi.org/10.1039/c6ay01075j.

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Direct injection of alcoholic samples/broths into a RP-HPLC (with a PDA-UV detector) system to quantify ethanol directly as a negative peak. The kind of peak pair depends on the ethanol concentration as described in the article.

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18

Chaudhary, Anjali, Meenakshi Dhaiya, Shaily Tyagi, and Swati Mittal. "Method Development and Validation of Polmacoxib in Capsule Dosage Form by RP-HPLC." Journal of Drug Delivery and Therapeutics 11, no. 4-S (2021): 59–63. http://dx.doi.org/10.22270/jddt.v11i4-s.4984.

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A simple and sensitive RP-HPLC method developed for estimation of Polmacoxib in bulk by using a high performance liquid chromatography with PDA detector using Phenomenex luna C18 column (250mmx4.6mm), 5 µm; mobile phase comprises of Water : ACN as (1:1) at the flow rate 1.0 ml/min and the wavelength of detection 238 nm and eluted at 8.12 minutes. The proposed method is validated for specificity, Linearity, Precision, accuracy, ruggedness, and Robustness. All the parameters were found within the acceptable limits. RP-HPLC method was a simple, reliable economic and acceptable and it confirmed th

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Rangelov, Kozhuharov Vanya, Stanislava Ivanova, Vanya Nalbantova, Niko Benbassat та Kalin Ivanov. "Development and validation of an LC-PDA method for detection of the natural β2 agonist higenamine". Pharmacia 72 (21 травня 2025): 1–7. https://doi.org/10.3897/pharmacia.72.e151153.

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Higenamine is a natural <i>β<sub>2</sub></i> agonist that can be found in the extracts of many plants, including <i>Nelumbo nucifera</i> Gaertn., <i>Tinospora crispa</i> L., <i>Nandina domestica</i> Thunb., <i>Gnetum parvifolium</i> Warb., <i>Asarum sieboldii</i> Miq., <i>Asarum heterotropoides</i> F. Schmidt, <i>Aconitum carmichaelii</i> Debeaux, and <i>Aristolochia brasiliensis</i> Mart. & Zucc. Since 2017, the compound has been included in WADA's prohibited list, and its detection in the biological samples of professional athletes is regarded as a violation of the anti-doping rules. Cur

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Yang, Lin, Hai Jiang, Xudong Xing, et al. "A Biosensor-Based Quantitative Analysis System of Major Active Ingredients in Lonicera japonica Thunb. Using UPLC-QDa and Chemometric Analysis." Molecules 24, no. 9 (2019): 1787. http://dx.doi.org/10.3390/molecules24091787.

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In the study, a surface plasmon resonance-based (SPR-based) competitive assay was performed to analyze different compounds’ inhibitory activity to TNF-α, an important pro-inflammatory cytokine in the pathogenesis of chronic inflammatory diseases. Moreover, the single mass spectrometry (MS) detection method was coupled with an ultra-high-performance liquid chromatography (UPLC) system for the routine quality control (QC) of a traditional Chinese medicine (TCM). The above quality control strategy was evaluated with Lonicera japonica Thunb. Analytes were firstly separated on a Waters ACQUITYTM UP

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Arun Kumar Kuna, Ganapathi S, and Radha GV. "A novel RP- HPLC method development and forced degradation studies for semaglutide in active pharmaceutical ingredients and pharmaceutical dosage form." International Journal of Research in Pharmaceutical Sciences 10, no. 2 (2019): 865–73. http://dx.doi.org/10.26452/ijrps.v10i2.263.

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This research objective is for the development of a specific and simple method to trace Semaglutide presence in active pharmaceutical ingredient and pharmaceutical dosages. As part of a study on Semaglutide drug, solvents of HPLC grade waters HPLC instrument (Empower software) with PDA detector, ultrasonicator (Make: Labman) and pH meter (Make: Adwa) are used. The Method was optimized with mobile phase with a composition of buffer and solvent were of 60:40%v/v, flow maintained was 1.0ml/min, the injection volume of 10µl, run time was 5min. All separations were performed with PDA detector and c

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22

Ma, Guang-Lei, Jiang Wan, Juan Xiong, Guo-Xun Yang, and Jin-Feng Hu. "Simultaneous Identification of Characteristic Components in HPLC-PDA-ELSD Fingerprint Profile of Ginkgo biloba Leaves Extract." Natural Product Communications 14, no. 6 (2019): 1934578X1985790. http://dx.doi.org/10.1177/1934578x19857902.

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This is an updated fingerprint profile for the simultaneous identification of 29 compounds, mainly including characteristic -terpene trilactones and flavonoid glycosides from Ginkgo biloba leaves (EGb) by employing a high-performance liquid chromatography-photodiode array-evaporative light scattering detector method. Compounds 1 and 6 had not been previously either detected or described in any EGb samples. In general, these 29 compounds were distributed into 5 regions in the fingerprint according to their different structural properties. This efficient analytical method could be generally appl

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Boulahlib, Soumia, Ali Boudina, Kahina Si-Ahmed, Yassine Bessekhouad, and Mohamed Trari. "Development and validation of a fast and simple HPLC method for the simultaneous determination of aniline and its degradation products in wastewater." Analytical Methods 8, no. 30 (2016): 5949–56. http://dx.doi.org/10.1039/c6ay01298a.

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In this study, a rapid and simple method based on reversed-phase high performance liquid chromatography (RP-HPLC) using a photodiode array detector (PDA) for the simultaneous analysis of five pollutants including aniline and its degradation products, para-aminophenol, meta-aminophenol, ortho-aminophenol and phenol, was developed.

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Wu, Xuejin, Lingyan Jia, Jiafan Wu, et al. "Simultaneous Determination and Quantification of Triterpene Saponins from Camellia sinensis Seeds Using UPLC-PDA-QTOF-MS/MS." Molecules 24, no. 20 (2019): 3794. http://dx.doi.org/10.3390/molecules24203794.

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Saponins in the Camellia sinensis seeds have a broad spectrum of biological properties and application potentials. However, up to now, no chromatographic methods have been developed to provide full fingerprinting and quality assurance for these saponins. This research aimed to develop a novel method to tentatively identify and quantify saponins in C. sinensis seeds by ultra-high-performance liquid chromatography coupled with photo-diode array detector and quadrupole time-of-flight mass spectrometry (UPLC-PDA-QTOF-MS/MS), and compare it with the classic vanillin-sulfuric acid assay. Fifty-one t

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Nadendla, Prof Ramarao, and Dr Abhinandana Patchala. "A Validated high Performance Liquid Chromatographic Method for the Quantification of Favipiravir by PDA Detector." International Journal of pharma and Bio Sciences 11, no. 2 (2021): 181–88. http://dx.doi.org/10.22376/ijpbs/lpr.2021.11.2.p181-188.

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Wang, Rui, Jacquelyn Runco, Li Yang, et al. "Qualitative and quantitative analyses of goitrin–epigoitrin in Isatis indigotica using supercritical fluid chromatography-photodiode array detector-mass spectrometry." RSC Adv. 4, no. 90 (2014): 49257–63. http://dx.doi.org/10.1039/c4ra02705a.

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A novel SFC/PDA/MS method was established for determination ofR- andS-goitrin inIsatis indigoticaand it was shown as an integral part of the overall analytical platform for natural product research, especially in the area of chiral analysis.

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Le Thi, Thuy, Trang Vu Thi, Quynh Do Truc, et al. "Simultaneous determination of capsanthin and capsorubin in foods by high-performance liquid chromatography using PDA detector." Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam 6, no. 4 (2023): 91–105. http://dx.doi.org/10.47866/2615-9252/vjfc.4163.

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A high-performance liquid chromatography method with a photodiode array detector (HPLC-PDA) was developed for the simultaneous determination of Capsanthin and Capsorubin in food. These are the two main carotenoids responsible for the red color found in Capsicum annuum and lily (Lilium). Analytes were extracted by ultrasonic vibration method with solvent of acetonitrile (ACN): ethyl acetate containing 0.1% butyl hydroxytoluene (BHT) (1:1, v/v) at a temperature of 40oC for 20 minutes. The sample extract solution was determined by HPLC&ndash;PDA with the following conditions: InterSustain C18

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Larisa, Alagić Džambić, Dacić Minela, Bikić Nikolina, and Džambić Mirsad. "Quantification of Betamethasone Dipropionate in Pharmaceutical Ointment by RP-HPLC." Chemistry Research Journal 5, no. 6 (2020): 167–71. https://doi.org/10.5281/zenodo.13148362.

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<strong>Abstract </strong>A simple, specific, precise and accurate reverse phase HPLC method has been developed for the quantification of Betamethasone in pharmaceutical ointment. The chromatographic separation was achieved on Zorbax column, 150 mmx4.6 mm, 5 µm, using PDA detector. The mobile phase was 50% acetonitrile (v:v), at flow rate 1.0 mL/min. Active ingredient Betamethasone was detected at 230 nm, at 30ºC temperature for column. The retention time was 15.4 min. The method was validated according to the ICH guidelines with respect to specificity, linearity (r<sup>2</sup> =1),

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Turkiewicz, Igor, Aneta Wojdyło, Karolina Tkacz, Paulina Nowicka, and Francisca Hernández. "Antidiabetic, Anticholinesterase and Antioxidant Activity vs. Terpenoids and Phenolic Compounds in Selected New Cultivars and Hybrids of Artichoke Cynara scolymus L." Molecules 24, no. 7 (2019): 1222. http://dx.doi.org/10.3390/molecules24071222.

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The aim of the study was to analyze the chemical composition of new artichoke cultivars and hybrids and to assess their potential health-promoting properties. Polyphenols, carotenoids and chlorophylls were identified by liquid chromatography-photodiode detector-mass spectrometry/quadrupole time of flight (LC-PDA-MS/QTof) and quantified by ultra performance liquid chromatography-photodiode detector (UPLC-PDA). Sugar and organic acid profiles were prepared, and antioxidant capacity (ABTS, FRAP and ORAC) and in vitro antidiabetic (inhibition of α-amylase and α-glucosidase) and anticholinesterase

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Quandt, Eckhard, Stephan laBarré, Andreas Hartmann, and Heinz Niedrig. "Parallel Detection of Electron Energy Loss Spectra in Direct Mode." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 2 (1990): 82–83. http://dx.doi.org/10.1017/s0424820100134004.

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Due to the development of semiconductor detectors with high spatial resolution -- e.g. charge coupled devices (CCDs) or photodiode arrays (PDAs) -- the parallel detection of electron energy loss spectra (EELS) has become an important alternative to serial registration. Using parallel detection for recording of energy spectroscopic large angle convergent beam patterns (LACBPs) special selected scattering vectors and small detection apertures lead to very low intensities. Therefore the very sensitive direct irradiation of a cooled linear PDA instead of the common combination of scintillator, fib

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Satish, J., P. Radhakrishnanand, and K. Surendra Babu. "METHOD DEVELOPMENT AND VALIDATION OF NORETHINDRONE ACE-TATE ASSAY AND ITS RELATED IMPURITIES IN API AND PHARMACEUTICAL FORMULATION WITH ORTOGONAL DETECTOR TECHNQUES." International Journal of Pharmacy and Pharmaceutical Sciences 9, no. 12 (2017): 110. http://dx.doi.org/10.22159/ijpps.2017v9i12.19856.

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Objective: To develop and validate a sensitive and stability indicating gradient reverse phase ultra-high performance(UHPLC-PDA) liquid chromatography with photodiode array(PDA) and mass spectroscopy (MS) of Norethindrone Acetate (NA) assay and organic impurities (OI) in active pharmaceutical Ingredient(API) and Pharmaceutical Formulation (PF).Methods: The chromatographic conditions were optimized using Zorbax SB-C18 analytical UHPLC column with the dimensions (100 x 2.1) mm and 1.8 μm particle sizes. The mobile phase consisted of water (solution A) and acetonitrile (solution B) with gradient

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Larisa, Alagić-Džambić, Dacić Minela, Frljak Amila, Osmanović Omerdić Ehlimana, and Džambić Mirsad. "RP-HPLC Method of the Estimation of Xylometazoline hydrochloride in Nasal Spray Solution." Chemistry Research Journal 5, no. 5 (2020): 31–34. https://doi.org/10.5281/zenodo.13144163.

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<strong>Abstract </strong>A simple, specific, precise and accurate reverse phase HPLC method has been developed for the determination of nasal decongestive, Xylometazoline hydrochloride in nasal spray solution. The chromatographic separation was achieved on column C18, 150 mmx4.6 mm, 3.5 µm, using PDA detector. The mobile phase was acetonitrile and phosphate buffer pH 3.0 (60:40 v:v), at flow rate 1.0 mL/min, detected at 220 nm, at 35ºC temperature for column. The retention times was at about 1.5minutes.The method was validated according to the ICH guidelines with respect to specifi

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Larisa, Alagić Džambić, Dacić Minela, Beganović Larisa, and Džambić Mirsad. "RP-HPLC Method of the Estimation of Folic Acid in Tablets." Chemistry Research Journal 5, no. 6 (2020): 163–66. https://doi.org/10.5281/zenodo.13148237.

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<strong>Abstract </strong>A simple, specific, precise and accurate reverse phase HPLC method has been developed and described for the determination of Folic acid in solid oral forms, tablets. The chromatographic separation was achieved on column C18, 150 mmx4.6 mm, 3.5 µm, using PDA detector. The mobile phase was methanol and acetate buffer pH 5.2 (50:50 v:v), at flow rate 1.0 mL/min, detected at 240 nm, at 25ºC temperature for column. The retention time was at about 1.8 minutes. The method was validated according to the ICH guidelines with respect to specificity, linearity (r<sup>2

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Al-amin, Mohammad, Gazi Nurun Nahar Sultana, and Chowdhury Faiz Hossain. "IDENTIFICATION OF SILDENAFIL CITRATE AS AN ADULTERANT IN HERBAL PRODUCTS USING HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY WITH PHOTODIODE ARRAY DETECTOR." International Journal of Pharmacy and Pharmaceutical Sciences 10, no. 9 (2018): 15. http://dx.doi.org/10.22159/ijpps.2018v10i9.26425.

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Objective: Investigation of sildenafil citrate as an adulterant in the traditional liquid herbal products of the local market in Bangladesh.Methods: A reversed-phase high-performance liquid chromatographic (HPLC) method with photodiode array (PDA) detector system has been developed and validated for investigating the presence of synthetic phosphodiesterase 5 (PDE-5) enzyme inhibitor as an adulterant in the traditional herbal products. Nine of the liquid preparations (syrup), Balarista (A), Jinsant (B), Jernide (C), Bolarist (D), Sree Gopal Oil (E), Menostroge (F), Enerton (G), Ginseng (H) and

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Savale, Sagar Kishor. "Simultaneous estimation of Curcumin and Gefitinib in bulk by using RP-HPLC technique with PDA detector." Hygeia J. D.Med.10 (1) August 2018 - January 2019 10, no. 1 (2018): 1–8. http://dx.doi.org/10.15254/h.j.d.med.10.2018.172.

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Plan: RP-HPLC method development and validation for the simultaneous estimation of curcumin and Gefitinib in bulk. Preface: RP-HPLC chromatographic method the been widely employed in the determination of individual components in a mixture or fixed dose combination. For the ternary mixture containing Curcumin and Gefitinib, no chromatographic method for simultaneous evaluation has been reported so far. Thus our aim is to develop a simultaneous estimation method for curcumin and gefitinib by using an RP-HPLC method using a PDA detector. Methodology: The method was validated as per ICH guidelines

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Budikayanti, Astri, Chiswyta Chaliana, Melva Louisa, and Rianto Setiabudy. "DEVELOPMENT AND VALIDATION OF CARBAMAZEPINE PLASMA CONCENTRATIONS MEASUREMENT AND ITS APPLICATION ON EPILEPSY PATIENTS." International Journal of Pharmacy and Pharmaceutical Sciences 9, no. 9 (2017): 87. http://dx.doi.org/10.22159/ijpps.2017v9i9.19402.

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Objective: To develop and validate high-performance liquid chromatography with photodiode array (HPLC-PDA) detector as a method for measuring carbamazepine plasma concentrations in epilepsy patients treated with monotherapy or polytherapy.Methods: Carbamazepine was extracted from epilepsy patients’ plasma through liquid-liquid extraction, using protein precipitation with chloroform. Analysis was performed using HPLC with Inertsil DS-4 C18 (4.6x150 mm), 5 μm particle size column. The optimal condition for separation was established in a mobile phase consisting of acetonitrile: water (50:50) at

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Reis, Débora, Pedro Silva, Rosa Perestrelo, and José S. Câmara. "Residue Analysis of Insecticides in Potatoes by QuEChERS-dSPE/UHPLC-PDA." Foods 9, no. 8 (2020): 1000. http://dx.doi.org/10.3390/foods9081000.

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Insecticides are broadly applied in agriculture to defend crops from illnesses and pest attacks, consequently guaranteeing high production. However, their residual deposits in food products are becoming a main concern with regard to human consumption. As such, sensitive analytical methods should be developed to assess, prevent and control insecticide residues. In this research, an accurate, fast and reliable residual analytical method, that is quick, easy, cheap, effective, rugged and safe, combined with dispersive solid phase extraction (QuEChERS-dSPE), was developed for the determination of

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Iwata, Tetsuo, and Gary M. Hieftje. "Simple Method to Measure the Coherence Time of a Mode-Locked Laser." Applied Spectroscopy 46, no. 10 (1992): 1464–68. http://dx.doi.org/10.1366/000370292789619241.

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A simple method is described to measure the coherence time of a mode-locked pulse train. The temporal coherence function is obtained from an interference pattern produced by crossing the two laser pulses at a linear photodiode array (PDA) detector. Two wave-fronts generated from the same or from successive pulses are tilted with respect to each other and intersect the PDA at a small angle; the “visibility” of the resulting fringe pattern is then plotted as a function of the temporal offset between the interfering pulses. The coherence time of a mode-locked Ar+ laser (225 ps) and that of a sync

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Dwiyanti, Shinta Puspa, Diva Afiah Hanifa Irawan, Zuyyinna Alya Abbas, Marsah Rahmawati Utami, and Lina Nurfadhila. "Validasi Metode Analisis Senyawa Obat Dalam Sampel Biologis (Urine)." Journal of Pharmaceutical and Sciences 6, no. 2 (2023): 885–91. http://dx.doi.org/10.36490/journal-jps.com.v6i2.165.

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Urin merupakan salah satu spesimen yang dipilih karena metabolit dan obat didalam urin keberadaannya relatif tinggi. Selain itu, sampel yang paling mudah dan stabil untuk pemeriksaan adalah sampel urin. Tujuan penelitian ini untuk mengetahui metode analisis yang valid untuk menganalisis senyawa obat dalam sampel biologis urin. Metode penelitian yang dilakukan yaitu studi literatur yang dilakukan pada beberapa jurnal yang kredibel dengan kriteria jurnal 10 tahun terakhir yang berkaitan dengan penentuan kadar senyawa obat urine manusia. Hasil yang telat diperoleh dari lima analit yang berbeda ya

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Pereira, Fernando J., Aida Rodríguez-Cordero, Roberto López, Luis C. Robles, and A. Javier Aller. "Development and Validation of an RP-HPLC-PDA Method for Determination of Paracetamol, Caffeine and Tramadol Hydrochloride in Pharmaceutical Formulations." Pharmaceuticals 14, no. 5 (2021): 466. http://dx.doi.org/10.3390/ph14050466.

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Paracetamol (acetaminophen) (PAR), caffeine (CAF) and tramadol hydrochloride (TRA) are important drugs widely used for many clinical purposes. Determination of their contents is of the paramount interest. In this respect, a quick, simple and sensitive isocratic RP-HPLC method with photodiode array detection was developed for the determination of paracetamol, caffeine and tramadol in pharmaceutical formulations. An improved sensitive procedure was also evolved for tramadol using a fluorescence detector system. A C18 column and a mobile phase constituted by methanol/phosphate were used. LODs wer

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Furusawa, Naoto. "A 100% Water Mobile Phase HPLC-PDA Analysis of Selected Neonicotinoid Insecticides." JOURNAL OF ADVANCES IN CHEMISTRY 10, no. 9 (2014): 3127–32. http://dx.doi.org/10.24297/jac.v10i9.878.

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This paper describes a reserved-phase HPLC method for detecting frequently-used neonicotinoid insecticides, acetamiprid (ATP) and imidacloprid (ICP), using an isocratic 100 % water mobile phase. Chromatographic separations were performed an Inertsil® WP300 C4 with water mobile phase and a photodiode-array detector. The total run time was < 7 min. The system suitability was well within the international acceptance criteria. The detection limits were 0.013 μg ml-1 for ATP and 0.015 μg ml-1 for ICP, respectively. A harmless HPLC method for simultaneous detecting ATP and ICP was developed and m

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Rangelov Kozhuharov, Vanya, Stanislava Ivanova, Vanya Nalbantova, Niko Benbassat та Kalin Ivanov. "Development and validation of an LC-PDA method for detection of the natural β2 agonist higenamine". Pharmacia 72 (21 травня 2025): 1–7. https://doi.org/10.3897/pharmacia.72.e151153.

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Higenamine is a natural β2 agonist that can be found in the extracts of many plants, including Nelumbo nucifera Gaertn., Tinospora crispa L., Nandina domestica Thunb., Gnetum parvifolium Warb., Asarum sieboldii Miq., Asarum heterotropoides F. Schmidt, Aconitum carmichaelii Debeaux, and Aristolochia brasiliensis Mart. & Zucc. Since 2017, the compound has been included in WADA’s prohibited list, and its detection in the biological samples of professional athletes is regarded as a violation of the anti-doping rules. Currently, many dietary supplements (DSs) contain plants that are rich in hig

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Bernart, Matthew W. "Ultra-High Performance Liquid Chromatography (UHPLC) Method for the Determination of Limonene in Sweet Orange (Citrus sinensis) Oil: Implications for Limonene Stability." Journal of AOAC INTERNATIONAL 98, no. 1 (2015): 94–97. http://dx.doi.org/10.5740/jaoacint.14-157.

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Abstract The citrus-derived bioactive monoterpene limoneneis an important industrial commodity and fragrance constituent. An RP isocratic elution C18 ultra-HPLC (UHPLC) method using a superficially porous stationary phase and photodiode array (PDA) detector has beendeveloped for determining the limonene content of sweet orange (Citrus sinensis) oil. The method is fast with a cycle time of 1.2 min, linear, precise, accurate, specific, and stability indicating, and it satisfies U.S. Pharmacopeia suitability parameters. The method may be useful in its present form for limonene processing, or modi

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Buralla, Kiran Kumar, and Varadarajan Parthasarathy. "Validated RP-HPLC Method Development of Pazopanib in Bulk and its Pharmaceutical Dosage Form." Pharmaceutical Methods 11, no. 1 (2020): 4. https://doi.org/10.5281/zenodo.14586103.

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Objectives: An accurate, sensitive, precise and rapid method for analysis and quantification of Pazopanib by Reverse Phase High Performance Chromatography (RP-HPLC) was developed and validated. Pazopanib in bulk and formulations were analyzed and quantification. Methods: Pazopanib in bulk and formulations were analyzed on Phenomenex enable C18 column (15x4.6mm, 5µm particle size) as stationary phase. Mobile phase was composed of acetonitrile and phosphate buffer (pH 5) in the ratio of 60:40%v/v at a flow rate of 1.2ml/min. elutes were analyzed using PDA detector at a detection wavelength

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Manusmitha, Sriram Srinivasa, Shivanna Chandan Ravandur, and Sairam Koganti Venkata. "Validated RP-UFLC Method Development of Paclitaxel in Pure and Pharmaceutical Dosage Form." Pharmaceutical Methods 8, no. 1 (2017): 01–05. https://doi.org/10.5281/zenodo.14854634.

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Introduction: An accurate, precise and rapid method for analysis and quantification of paclitaxel by reverse phase ultra-fast liquid chromatography (RP UFLC) was developed and validated. Paclitaxel in bulk and formulations were analyzed and quantified. Methods: Paclitaxel in bulk and formulations were analyzed on phenomenex C18 column (250 mm×4.6 mm i.d., 5 µm particle size) as stationary phase. Mobile phase was composed of acetonitrile and phosphate buffer pH 4.5 in the ratio 50:50 at a flow rate of 1.0 mL/min. Elutes were analyzed using PDA detector at a detection wavelength of 2

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Nguyen Quang, Hung, Lan Tran Ngoc, Anh Kieu Van, et al. "Quantification of lactoferrin in dietary supplements using a Heparin affinity clean-up column by HPLC PDA detector." Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam 6, no. 4 (2023): 75–90. http://dx.doi.org/10.47866/2615-9252/vjfc.4162.

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The use of dietary supplements containing lactoferrin is a growing trend. As a result, there is a need for a simple and reliable analytical method to determine the content of lactoferrin in these supplements to ensure food quality. In this study, an HPLC method was developed and validated for determining lactoferrin in dietary supplements using a HiTrap Heparin clean-up column in combination with HPLC. The study involved selecting optimal conditions for extracting lactoferrin from the sample matrix, followed by chromatography conditions using a C4 column (150 mm &times; 4.6 mm, 3.5 &mi

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ADEYEMO DAYO OMODELE, BALOGUN AYOMIDE HALIMAT, and ABADUNNI VICTOR INIOLUWA. "Chemical analysis by laser-based Raman spectroscopy." International Journal of Scholarly Research and Reviews 2, no. 2 (2023): 001–4. http://dx.doi.org/10.56781/ijsrr.2023.2.2.0019.

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Raman was first discovered by C.V. Raman and K.F. Krishnan in 1928.It is a spectroscopic technique based on inelastic scattering of monochromatic light usually- from a laser in the visible or near infra-red part of electromagnetic spectrum. It probes vibrational, modes of the molecule and crystals of solid, liquid, and gaseous samples. t is commonly used in chemical analysis to provide a fingerprint by which molecules can be identified. At the time of its discovery from observing sunlight, obvious challenges were posed by the lack of a good Raman source, lack of a good detector, and by interfe

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Cheng, Qian, Shuhuan Peng, Fangyi Li, et al. "Quality Distinguish of Red Ginseng from Different Origins by HPLC–ELSD/PDA Combined with HPSEC–MALLS–RID, Focus on the Sugar-Markers." Separations 8, no. 11 (2021): 198. http://dx.doi.org/10.3390/separations8110198.

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Red ginseng (RG) has been extensively utilized in Asian countries due to its pharmacological effects. For the quality evaluation of RG, small molecules, such as ginsenosides, have been widely considered as candidates of its quality markers (Q-markers), and various analytical techniques have been developed in order to identify these compounds. However, despite the efforts to analyze the hydrophobic constituents, it is worth pointing out that about 60% of the mass of RG is made of carbohydrates, including mono-, oligo- and polysaccharides. Consequently, the quality differentiation and identifica

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Runja, Chinnalalaiah, P. Ravikumar, and Srinivasa Rao Avanapu. "A Validated Stability Indicating RP-HPLC Method Development and Validation for Simultaneous Estimation of Aliskiren Hemifumarate and Amlodipine Besylate in Pharmaceutical Dosage Form." Chromatography Research International 2014 (December 7, 2014): 1–7. http://dx.doi.org/10.1155/2014/628319.

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The present study describes the stability indicating RP-HPLC method for simultaneous estimation of aliskiren hemifumarate and amlodipine besylate in pharmaceutical dosage forms. The proposed RP-HPLC method was developed by using waters 2695 separation module equipped with PDA detector and chromatographic separation was carried on C-8 Inertsil ODS (150 × 4.6 mm, 5 µ) column at a flow rate of 1 mL/min and the run time is 10 min. The mobile phase consisted of phosphate buffer and acetonitrile in the ratio of 40 : 60% v/v and pH was adjusted to 3 with orthophosphoric acid and eluents were scanned

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Syahputra, M. Rio, Ferry F. Karwur, and Leenawaty Limantara. "Analisis Komposisi dan Kandungan Karotenoid Total dan Vitamin A Fraksi Cair dan Padat Minyak Sawit Kasar (CPO) Menggunakan KCKT Detektor PDA." Jurnal Natur Indonesia 10, no. 2 (2012): 89. http://dx.doi.org/10.31258/jnat.10.2.89-97.

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This study was carried out on two phases of Crude Palm Oil (CPO) to determine the total and composition ofcarotenoid and vitamin A content. Total of carotenoid was analyzed using spectrophotometer UV-Vis, and then theresult was calculated by Gross (1991) equation. The vitamin A content was calculated by NAS-NRC equation (1974).The type and composition of both phases of CPO were determined by Choo’s method (1994) by using HPLC withPhoto Diode Array (PDA) detector. The sample was prepared in two methods, with and without saponification. Theresult shows that total carotenoids in liquid and solid

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