Results 1 to 10 of about 663,071 (359)
Integrating Paper Chromatography with Electrochemical Detection for the Trace Analysis of TNT in Soil [PDF]
Sensors, 2015 We report on the development of an electrochemical probe for the trace analysis of 2,4,6-trinitrotoluene (TNT) in soil samples. The probe is a combination of graphite electrodes, filter paper, with ethylene glycol and choline chloride as the solvent ...
Patrick Ryan +3 more
doaj +2 more sources
Paper Chromatography of Pterins [PDF]
Nature, 1949 THE detection and identification of pterins in small quantities was carried out by Schopf and Becker1 in the course of their classical work on this class of pigments. They employed a chromatographic technique using 0·004 N aqueous hydrochloric acid or 0·01 N methyl alcoholic hydrochloric acid solutions on micro-absorption columns of alumina or ...
P. M. GOOD, A. W. Johnson
openalex +4 more sources
A Review on Radiochemical Purity Analysis Methods of Radiopharmaceuticals
Journal of Isotopes, 2021 Radiopharmaceuticals means radionuclide preparations or labeled compounds for clinical diagnosis or therapeutic use. Radiochemical purity is one of the important judgment indexes to measure the quality of radiopharmaceuticals, which directly affects the ...
ZHANG Yun;YANG Liu;JIANG Hua
doaj +1 more source
Impact of Acid Rain with Different pH Values in Monstera deliciosa Plants
Medical Sciences Forum, 2023 The present research experimentally outlines the reaction of a Monstera deliciosa plants to the effects of acid rain at various pH levels. Sulfuric acid was used to simulate acid rain, with prepared solutions having four different pH values.
Afonso Ramos +4 more
doaj +1 more source
Phenylcarbamate-Modified Paper for Paper Chromatographic Analysis of Hydrophobic Compounds
Technologies, 2022 Paper chromatography is a low-cost and facile analytical method traditionally used to analyze hydrophilic substances. For the application to substances with lower polarity, we prepared a stationary phase based on filter paper modified with phenyl ...
Bungo Ochiai +2 more
doaj +1 more source
Paper chromatography of amines [PDF]
Biochemical Journal, 1951 RESP ...
Bremner, J. M., Kenten, R. H.
openaire +3 more sources
PAPER CHROMATOGRAPHY OF STEROIDS [PDF]
, 1950 A method for the paper chromatography of sterols involving impregnated paper has been developed.
Kritchevsky, David, Calvin, M.
openaire +6 more sources
Paper Chromatography of Thioureas [PDF]
Nature, 1953 IN the course of a current investigation, it became necessary to separate and identify minute amounts of N-substituted thioureas. Paper chromatography suggested itself as the method of choice for this purpose, and a technique has now been worked out which gives satisfactory and reproducible results on some thirty thioureas investigated, separately or ...
Kurt Rubinstein, Anders Kjær
openaire +5 more sources
Inorganic paper chromatography [PDF]
Chromatographic Reviews, 1949 PROF. K. P. LINSTEAD kindly sent me a manuscript copy of the communication by Burstall, Davies, Linstead and Wells1, and I should like to comment on this work in relation to my own.
openaire +3 more sources
Study on migration mechanism of sweeteners in tipping paper
Shipin yu jixie, 2022 Objective: This study aimed to solve the problem of cigarette flavoring technology that the surface taste of splicing paper weakens over time. Methods: A rapid method for the simultaneous determination of two kinds of sweeteners was established based on ...
ZHANG Qin +3 more
doaj +1 more source