Results 11 to 20 of about 1,109 (174)

STUDY OF ORGANIC ACIDS PROFILE OF GENUS PERSICARIA MILL SPECIES

open access: yesФармация и фармакология (Пятигорск), 2022
The genus Persicaria Mill. species belonging to the buckwheat family (Polygonaceae Juss.) and widespread in Russia, are weeds. The chemical composition’s main components of the genus Persicaria Mill.
A. S. Chistyakova   +3 more
doaj   +1 more source

Homoeopathic Medicines of Virginian Witch Hazel: Dosage Forms and Standardisation

open access: yesРегуляторные исследования и экспертиза лекарственных средств, 2023
According to the authors’ analysis of regulatory documents for homoeopathic medicines of Virginian witch hazel (Hamamelis virginiana L.), there is a need to transform quality assessment approaches and to unify analytical procedures for identification and
N. S. Teryoshina   +2 more
doaj   +1 more source

Sobre o desenvolvimento da análise volumétrica e algumas aplicações atuais On the development of titrimetry and some of its current applications

open access: yesQuímica Nova, 2005
Classical methods of analysis played a fundamental role in the development of Chemistry and the chemical industry. They have been tools for analytical procedures since the 18th century, remaining useful until today.
Juliana Terra, Adriana Vitorino Rossi
doaj   +1 more source

Uso de ICP OES e titrimetria para a determinação de cálcio, magnésio e alumínio em amostras de solos Use of ICP OES and titrimetry for calcium, magnesium and aluminum determination in soil samples

open access: yesRevista Brasileira de Ciência do Solo, 2010
O crescente interesse dos laboratórios brasileiros de análise de fertilidade de solos pela espectrometria de emissão óptica com plasma indutivamente acoplado (ICP OES) em detrimento da técnica de titrimetria deve-se à possibilidade da determinação ...
Ricardo Soares   +5 more
doaj   +1 more source

Sensitive and selective methods for the determination of cyproheptadine in tablets using N-bromosuccinimide and two dyes [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2012
One titrimetric and two spectrophotometric methods are described for the determination of cyproheptadine hydrochloride (CPH) in bulk drug and tablets employing N-bromosuccinimide (NBS) as a brominating agent and two dyes, erioglaucine (EG) and meta ...
Raghu Srinivas Madihalli   +1 more
doaj   +1 more source

Determination of the Degree of Unsaturation in Essential Oils

open access: yesРегуляторные исследования и экспертиза лекарственных средств, 2023
Being widely used, medicinal products based on vegetable oils require strict regulation and evaluation of quality attributes, determination of shelf-life periods, and monitoring of storage conditions.
A. M. Agafonov   +5 more
doaj   +1 more source

Quantitative determination of perfloxacin mesylate by residual-base neutralisation method [PDF]

open access: yesJournal of the Serbian Chemical Society, 2004
This work describes two procedures based on residual base determination for the quantification of pefloxacin mesylate (PFM) in bulk drug and in pharmaceutical products.
Basavaiah Kanakapura   +1 more
doaj   +1 more source

Development of a ‘drop-count’ method for the screening of the ethanol content in hand sanitisers using oxalic acid and potassium permanganate titrimetry

open access: yesOrapuh Journal, 2022
Introduction The demand for ethanol-based sanitisers has increased dramatically since the dawn of the COVID-19 era, making it very difficult for health regulators to ensure the quality of the products and the safety of unsuspecting consumers.
Kaneoa E. Monts’o   +5 more
doaj   +1 more source

Determination of Arbutin in Herbal Medicinal Products

open access: yesРегуляторные исследования и экспертиза лекарственных средств, 2021
Arbutin is the main active ingredient in many herbal medicinal products that have diuretic, antimicrobial, bactericidal, and antioxidant effects. Many of these products are mixtures of different herbal substances.
N. P. Antonova   +6 more
doaj   +1 more source

Development of a reference material for the composition of 0.1 m potassium dichromate solution. Certified reference material GSO 10992-2017

open access: yesСтандартные образцы, 2019
This paper describes key stages in the development and investigation of a high-precision certified reference material (CRM) for the composition of potassium dichromate solution.
A. Yu. Shimolin, A. V. Sobina
doaj   +1 more source

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