Results 31 to 40 of about 63,191 (286)

A Miniaturized Sample Preparation Method for the Determination of Vitamins A and E in Food Products

Molecules, 2023
A new analytical approach to the simultaneous identification and quantification of vitamins A and E in three representative matrices (Parmesan, spinach, and almonds) was developed. The analyses were based on high-performance liquid chromatography with UV-
Magdalena Słowik-Borowiec, Natalia Głąb, Sabina Stach, Ewa Szpyrka   +3 more
doaj   +1 more source

Retention Time and Ion Abundance Ratio of 8 Common Drugs （Poisons） by LC-MS/MS Qualitative Analysis#br# [PDF]

Fayixue Zazhi, 2020
Objective To investigate the maximum allowable deviations of retention time and ion abundance ratio of the 8 common drugs （poisons） from 3 categories, poisons （methamphetamine, morphine, ketamine）, benzodiazepines （estazolam, midazolam, diazepam ...
MIN Tao, LIU Shao-dan, XIN Guo-bin, et al.
doaj   +1 more source

Polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and chlorinated pesticides in background air in central Europe – investigating parameters affecting wet scavenging of polycyclic aromatic hydrocarbons [PDF]

Atmospheric Chemistry and Physics, 2015
Concentrations of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and chlorinated pesticides (CPs) were measured in air and precipitation at a background site in central Europe.
P. Shahpoury, G. Lammel, A. Holubová Šmejkalová, J. Klánová, P. Přibylová, M. Váňa   +5 more
doaj   +1 more source

SPECTROPHOTOMETRIC DETERMINATION OF FENOTEROL IN PURE FORM AND PHARMACEUTICAL FORMULATION. [PDF]

Al-Azhar Journal of Pharmaceutical Sciences, 2012
Four simple and selective spectrophotometric methods were developed for quantitative determination of Fenoterol in pure forms as well as in its pharmaceutical formulation.
Monir Amin
doaj   +1 more source

Detection frequency and median copies/100mL above LOQ.

, 2020
Detection frequency and median copies/100mL above LOQ.
Thomas B. Moorman (1905778), Lanying Ma (3392006), Michelle L. Soupir (4437001), Timothy P. Neher (8282448), Adina C. Howe (6110822)   +4 more
core   +1 more source

Summary of the correlation coefficient, accuracy, precision, LOD and LOQ values for the proposed method.

, 2022
Summary of the correlation coefficient, accuracy, precision, LOD and LOQ values for the proposed method.
Hyo Jeong Kim (7490237), Stephan Levonis (11965331), Stephanie Schweiker (11965328), Katie Powell (3534251)   +3 more
core   +1 more source

Determination of icariside, hyperoside and psoralen in food by liquid chromatography-tandem mass spectrometry

Journal of Future Foods, 2023
A high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method was built to determine icarside, hyperoside and psoralen in food. The samples were extracted with 70% methanol, the solid and semi-solid hotpot seasoning samples were ...
Sufang Fan, Junmei Ma, Xiaoxian Yuan, Xu Wang, Yi Wang, Yan Zhang   +5 more
doaj   +1 more source

Linearity, LOD and LOQ of seven SCFAs

, 2016
Linearity, LOD and LOQ of seven ...
Xiumei Gao (221817), Xiaoya Zhao (3374264), Yuefei Wang (510745), Yan Zhu (112437), Xin Chai (2823662), Yan Wang (15435), Zhenzuo Jiang (2823659), Fan Yang (1413), Guixiang Pan (3374267)   +8 more
core   +1 more source

Spectrophotometric simultaneous analytical method validation to determine isoniazid and pyridoxine in pure and 3D printed tablet forms

Journal of Pharmacy, 2023
Introduction: Isoniazid (INH) is the anti-tuberculosis drugs being used to counter tuberculosis since 1952. Patients on INH should be given daily prophylactic pyridoxine (PYR) with 10-50 mg/day to prevent the development of isoniazid-induced neuropathy.
Nur Suhaila Sudarman, Muhammad Salahuddin Haris   +1 more
doaj   +1 more source

LC-MS/MS chromatograms of a spiked liver sample on LOQ level.

, 2021
LC-MS/MS chromatograms of a spiked liver sample on LOQ level.
Heba N. Gad EL-Hak (11785089), Lamia Ryad (6400088), Nahla S. El-Shenawy (5942186), Rasha A. Al-Eisa (5942177), Ekramy Halawa (11785086)   +4 more
core   +1 more source