APPLICATION OF ARSENO-ORGANIC COMPOUNDS TO INORGANIC ANALYSIS Ⅰ. o-AMINO-BENZENE ARSONIC ACID AS AN ANALYTICAL REAGENT FOR DETECTION AND DETERMINATION OF SMALL AMOUNTS OF GOLD
5-IMINOTHIAZOLINE-2-THIOAMIDE USED AS ANALYTICAL REAGENT——Ⅱ THE PALLADOUS COMPOUNDS,THEIR COMPOSITIONS AND ANALYTICAL APPLICATIONS——HETEROMETRIC TITRATION
When formaldehyde being used as methylating agent, the optimum conditions were mixed acid strength 30%, reaction time 2 hour, n(MPC)/n(HCHO)=1:1 and temperature 100℃, here the yield of MPC was 89.47%.
seed soaking with different reagents promoted growth and development of pepper seedlings, improved seedling quality, the sequence of reagent effect was CuSO4 >Na2 SeO3>Na3 PO4 > H2 O2 >KMnO4.
seed soaking with different reagents promoted growth and development of cucumber seedlings, improved seedling quality, the sequence of reagent effect was Na 3PO 4 >KMnO 4>CuSO 4>Na 2SeO 3>H 2O 2.
In this paper, a new preparation method of 3,5-dinitrobenzoyl-bonded silica gel stationary phase (DNB) for HPLC was developed by using N-(β-aminoethyl)-γ-aminopropyl-methyldimethoxy silane as coupling reagent.
The influences of the dispersion reagent, the alkalinity and the calcination temperature on the surface morphology of nanopowders, and the electric conductivity were discussed.
Activated carbon was prepared from the sewage sludge of municipal wastewater treatment plant by chemical activation (activation reagent is ZnCl2) and was used for the adsorption of dye (reactive brilliant red K-2BP).
Dependences of lipoxygenase activity on pH, ionization enthalpies of various chemical groups, photoinactivation of the enzyme, and effects of specific reagents (p-CMB, DPF, and PMSF) were studied to identify catalytically active groups of the enzyme.
Based on immune reagents to sterigmatocystine hemiacetal, a test system was developed for determination of sterigmatocystine at the sensitivity of 0.1 ng/ml.
The details of the synthetic sequence followed for the preparation of all these compounds having almost all the structural features required for a compound to act as a potent insulin sensitizing agent are reported.
9-O-methylfusarubin was isolated from a novel source, Fusarion oxysporum, and evaluated for its phytotoxic and chlorotic inducing properties in plants as well as its potential as an antineoplastic agent.
The enantiomeric excess of the reduction product was up to 83.2% with cyclohexane as the solvent, the molar ratio of ligand: reductive agent: β-acetonaphthalene is 0.04:1.6:1, and 72-hours reaction time at 0°C.
A highly cross-linked structure was formed in both the cores and the shells by using a cross-linking agent, which could prevent the migration of hydrophobic PS shells to the inside of particles.
Benzoxycarbonyl chloride was selected as amino group protection agent, and the yield was elevated by replacing sodium bicarbonate with triethyl amide as the acid's neutralizer.
The conditions of the separate determination of cobalt and palladium in the presence of each other by changing the order of the addition of reagent and using bifunctional chromaticity measurements and two-wavelength spectrophotometry are specified.
The effect of reagent concentration, time, and temperature on the formation of different-ligand complexes was studied, and their stoichiometry was determined by different methods.