Results 51 to 60 of about 36,479 (161)

Optimization of a Procedure for the Determination of Some Heavy Metals in Herbal Medicines by Atomic Absorption Spectroscopy

Natural Product Communications
Objectives This study aims to develop and validate a reliable procedure for the determination of cadmium, lead, arsenic, and mercury in herbal medicines using atomic absorption spectroscopy.
Nhat Duy To, Anh Tran Thi Phuong, Triet Thanh Nguyen, Hoang Anh Pham, Quoc-Ky Truong   +4 more
doaj   +1 more source

Determination of rapid and sensitive extraction of colchicine from Colchicum baytopiorum and Colchicum decaisnei leaves by HPLC-UV method

Journal of Pharmaceutical and Biomedical Analysis Open
This study focuses on the extraction and analysis of colchicine, a bioactive alkaloid, from the leaves of two endemic species, Colchicum baytopiorum (n = 13) and Colchicum decaisnei (n = 11), collected from Antalya, Türkiye.
Efe Deniz, Ümit Babacan, Ceren Selim, Mehmet Fatih Cengiz   +3 more
doaj   +1 more source

Perfluoroalkyl acids abbreviations, method detection limits, and limits of quantification.

, 2015
PFAA: Perfluoroalkyl acidMDL: Method detection limitLOQ: Limit of quantification.n (%) below the LOQ applies to the immediately processed samples.Perfluoroalkyl acids abbreviations, method detection limits, and limits of quantification.
Cathrine Carlsen Bach (793963), Tine Brink Henriksen (332160), Jørn Olsen (60072), Jens Fuglsang (793965), Rossana Bossi (793964), Ellen Aagaard Nohr (205289), Bodil Hammer Bech (417436)   +6 more
core   +1 more source

Validation of a Thin-Layer Chromatography for the Determination of Hydrocortisone Acetate and Lidocaine in a Pharmaceutical Preparation

The Scientific World Journal, 2014
A new specific, precise, accurate, and robust TLC-densitometry has been developed for the simultaneous determination of hydrocortisone acetate and lidocaine hydrochloride in combined pharmaceutical formulation.
Małgorzata Dołowy, Katarzyna Kulpińska-Kucia, Alina Pyka   +2 more
doaj   +1 more source

Comparison of pharmaceutical (A) abundance (% of samples above the limit of quantification (LOQ)) and (B) the maximum river concentration (ng/L) during the pandemic period (November, 2009), late pandemic period (March 2010) and the inter-pandemic period (May 2011).

, 2014
Comparison of pharmaceutical (A) abundance (% of samples above the limit of quantification (LOQ)) and (B) the maximum river concentration (ng/L) during the pandemic period (November, 2009), late pandemic period (March 2010) and the inter-pandemic period (
Richard H. Lindberg (272976), Hanna Söderström (229975), Michael J. Bowes (402502), Andrew C. Singer (24584), Björn Olsen (74813), Ganna Fedorova (402501), Roman Grabic (229966), Ghazanfar A. Khan (402500), Josef D. Järhult (344481), Jerker Fick (229958)   +9 more
core   +1 more source

Voltammetric quantitation of nitazoxanide by glassy carbon electrode

Journal of Pharmaceutical Analysis, 2013
The present study reports voltammetric reduction of nitazoxanide in Britton–Robinson (B–R) buffer by cyclic and square-wave voltammetry at glassy carbon electrode.
Rajeev Jain, Rajeev Kumar Yadav, Jahangir Ahmad Rather   +2 more
doaj   +1 more source

Limit of quantification check for leukocyte and platelet count using Sysmex XN-1000 hematology analyzer [PDF]

, 2018
Hematološki brojač Sysmex XN-1000 je često korišten i pouzdan analitički uređaj u hematološkim laboratorijima. Cilj istraživanja bio je provjeriti granice kvantifikacije (LoQ) leukocita u tzv. „low white blood cell“ načinu rada uređaja koji se sve češće
Šebečić, Domagoj
core  

Optimization of diclofenac quantification from wastewater treatment plant sludge by ultrasonication assisted extraction

, 2021
A rapid quantification method of diclofenac from sludge samples through ultrasonication assisted extraction and solid phase extraction (SPE) was developed and used for the quantification of diclofenac concentrations in sludge samples with liquid ...
Sari, Sevgi, Ozdemir, Gamze, Tas, Didem Okutman, Topuz, Emel, Aydin, Egemen, Pehlivanoglu-Mantas, Elif   +5 more
core   +1 more source

The Validation of Chromatographic Methods in the Detection of Cocaine and Diluents in Drugs Seized by the Civil Police in the State of Espírito Santo

Orbital: The Electronic Journal of Chemistry
Over the years, police have seized tons of cocaine in the form of cocaine hydrochloride and crack, which are often adulterated by traffickers. This work aims to use GC/MS and HPLC to determine the limit of detection (LoD) and limit of quantification ...
Karoline P. Miossi, Thays C. Valin, Ramon R. T. Bottocim, Bruno Q. Araújo, Wanderson Romão , Eustaquio V. R. de Castro, Valdemar Lacerda Jr., Alvaro Cunha Neto   +7 more
doaj   +1 more source

Spectrophotometric Determination of Sunset Yellow (E-110) in Powdered Beverages and Pharmaceutical Preparations After Cloud Point Extraction Method

Journal of the Turkish Chemical Society, Section A: Chemistry, 2018
In this study, for the first time Brij 58 was used for the spectrophotometric determination of sunset yellow (SY) (E-110) in pharmaceutical preparations and powdered beverages after cloud point extraction (CPE).
Tufan Güray
doaj   +1 more source