Chromatography –mass

Magnolia citrata Noot. & Chalermglin was collected in the Central Highlands of Vietnam and examined for its essential oils’ chemical compositions and antimicrobial activities. The essential oils were obtained from the leaves, twigs, and stem barks of M. citrata using hydrodistillation, then analyzed using Gas Chromatography-Mass Spectrometry (GC-MS) and evaluated for antimicrobial activities.

10p dianmotminh02 03-05-2024 1 1   Download

A simple and environment-friendly electrochemical method using activated glassy carbon electrodes (aGCE) for monitoring the residues of tetracycline in pork samples was developed. A two-step pretreatment procedure was established for activating the glassy carbon electrode surface, including mechanical polishing and electrochemical pretreatment. In the supporting electrolyte solution of 0.2 M sodium sulfate (at pH 2.5), the electrochemical response of TC was characterized by two irreversible oxidation peaks at +0.95 V and +1.05 V vs. saturated calomel electrode. T

9p dianmotminh02 03-05-2024 3 1   Download

In this continuity, the potentiality of D. citrea essential oil was subjected to screening research. The extract yield was obtained experimentally and its chemical characterization was acquired by gas chromatography-mass spectrometry (GC-MS). The determined data was subjected as the input for computational implementations, including density functional theory calculation, molecular docking simulation, and biopharma-potential predicting analyses.

20p dianmotminh02 03-05-2024 1 1   Download

The needle and cone essential oils of Pinus fenzeliana Hand-Mazz. (Pinus kwangtungensis Chun & Tsiang) collected in Hang Kia-Pa Co Nature Reserve, Hoa Binh province were obtained by hydrodistillation and analyzed by a combination of GC-FID, GC-MS and NMR (Gas Chromatography/Gas Chromatography-Mass Spectrometry/Nuclear Magnetic Resonance (NMR) analysis).

9p dianmotminh02 03-05-2024 3 2   Download

Ebook "Russian contributions to analytical chemistry" offers a unique perspective and novel information on the significant contributions of Russian scientists to analytical chemistry and chemical analysis. Written by the Editor-in-Chief of the Journal of Analytical Chemistry, it discusses various examples of new methods and approaches originating in Russia, such as chromatography, electrothermal atomic absorption spectrometry, Kumakhov X-ray optics, the Spolský effect in fluorescent analysis and important innovations in mass spectrometry, which are already widely used.

165p tracanhphuonghoa1007 22-04-2024 7 3   Download

Ebook "Practical gas chromatography: A comprehensive reference" continues to be one of the most widely used analytical techniques, since its applications today expand into fields such as biomarker research or metabolomics. This new practical textbook enables the reader to make full use of gas chromatography. Essential fundamentals and their implications for the practical work at the instrument are provided, as well as details on the instrumentation such as inlet systems, columns and detectors.

904p tudohanhtau1006 29-03-2024 8 1   Download

Ebook "Nanomaterials for liquid chromatography and laser desorption/ionization mass spectrometry" describes major advances in ultrathin-layer chromatography (UTLC), liquid chromatography and surface-assisted laser desorption ionization (SALDI), and matrix-enhanced SALDI (ME-SALDI) mass spectrometry. Lu describes the fabrication of electrospun polyvinyl alcohol (PVA) UTLC plates using an in-situ crosslinking electrospinning technique.

118p tudohanhtau1006 29-03-2024 7 1   Download

Ebook "Multidimensional HPLC of polymers (Manuals in Polymer science)" presents the principle ideas of combining different analytical techniques in multi-dimensional analysis schemes. It reviews the basic principles and instrumentation of multi-dimensional chromatography and the hyphenation of liquid chromatography with selective spectroscopic detectors and presents experimental protocols for the analysis of complex polymers.

290p coduathanh1122 27-03-2024 3 1   Download

Part 2 book "Organic trace analysis" includes contents: Chromatography, capillary electrophoresis (CE), mass spectrometry, receptor based bioanalysis for mass screening, selected applications.

227p muasambanhan09 16-03-2024 6 0   Download

Ebook "Chromatography of aroma compounds and fragrances" aims to be self-sufficient in terms of the need of the professional intending to work in this interesting field. The objectives of the book are the compilation of the newest results in this field of research, the critical evaluation of the results and the prediction of the future trends in the study of these compound classes.

399p manmanthanhla0201 26-02-2024 4 1   Download

Ebook Basic principles of forensic chemistry: Part 1 Mô tả gốc: (BQ) Part 1 includes content: Introduction, atomic structure, molecules, organic chemistry, forensic language, forensic documentation, chemical screening, microcrystal techniques, chemical extractions and sample preparation, chromatography and mass spectrometry,… and other contents. Invite you to consult the details.

165p longtimenosee03 01-02-2024 4 0   Download

This work studied on developing the analytical procedure for determination of Aflatoxin B1 (AFB1) in cereal for infants by using ultra-performance liquid chromatography triple quadrupole mass spectrometry detector (UPLC-MS/MS).

8p vigojek 02-02-2024 3 1   Download

Liquid chromatography-mass spectrometry (LC-MS/MS) was used for measurement of the variation of tetrodotoxin (TTX) in a horseshoe crab Carcinoscorpius rotundicauda collected from Can Gio coast, Ho Chi Minh City, Vietnam from May 2021 to May 2022 over the seasons, body weight and gender.

13p vigojek 02-02-2024 4 1   Download

Cholesterol is a soft, pale yellow steroid fat that exists in the body's cell membranes and is transported in the plasma of most animals. This compound plays an important role in the physiology of the human body. However, excess cholesterol in the diet is also one of the leading causes of cardiovascular diseases.

14p vigojek 02-02-2024 5 1   Download

This study aimed to develop a method for measuring eight alkenylbenzenes (eugenol, methyl eugenol, acetyl eugenol, trans-isoeugenol, safrole, estragole, myristicin and trans-anethole) in various spices using gas chromatography highresolution mass spectrometry (GC-HRMS) with a simple ultrasonic vibration sample extraction method.

13p vigojek 02-02-2024 2 1   Download

In this study, a liquid chromatography with tandem mass spectrometry (LC-MS/MS) method was developed and applied to quantify sex hormones: progesterone (PG), testosterone (TS), and 17β-estradiol (E2) in health supplements.

13p vigojek 02-02-2024 2 1   Download

Ebook "LC-MS in drug bioanalysis" to discuss the development and validation of LC-MS methods and their applications in analyzing a wide range of drugs. Will facilitate pharmacologists, toxicologists, and physicians finding relevant analytical techniques in their clinical research.

476p nhanphanguyet 28-01-2024 2 2   Download

This report presents the development an highly sensitive, stable and reliable OCs analyzing method with GC/MS (gas chromatography/mass spectrometry) and results of OCs (organochlorines) levels in sediments of Thivai River basin.

10p vimarillynhewson 02-01-2024 0 0   Download

Trong báo cáo này, phương pháp phân tích Sắc ký khí ghép nối khối phổ (Gas Chromatography coupled Mass Spectroscopy - GC/MS) được sử dụng nhằm phân tích thành phần dạng khí sinh ra từ quá trình đốt cháy vải sợi cotton chưa qua xử lý, cũng như vải sợi cotton chống cháy xử lý bằng hệ phụ gia Pyrovatex CP, để từ đó thu được cái nhìn rõ nét hơn về tính an toàn của loại vật liệu này trong điều kiện sử dụng thực tế.

7p vimichaelfaraday 28-12-2023 6 4   Download

To reduce consumed chemicals and time, we developed a simple and rapid sample preparation procedure for PAH analysis in settled dust samples. The dust samples were extracted by using two ultrasonication techniques such as direct extraction (ultrasonic processor) and indirect extraction (ultrasonic water bath). Some extract clean-up techniques were also investigated. The proposed method was applied to analyze a representative settled road dust sample with and without native standard spiking.

6p vimichaelfaraday 28-12-2023 5 3   Download