【摘 要】
：
A method to determine water content in organic solvents was developed based on the color change of cobalt(II) nitrate in different solvents. The color-change me
【机 构】
：
College of Plant Protection,College of Sciences
【基金项目】
：
国家自然科学基金;the support the Scientific and technological key project;the Projects;the Scientific Research Foundation for the Doctors in Henan Agricultural University of China
论文部分内容阅读
A method to determine water content in organic solvents was developed based on the color change of cobalt(II) nitrate in different solvents. The color-change mechanism and optimal conditions for determining the water content were investigated. The results showed that there was a good linear relationships between the absorbance of cobalt(II) complexes in organic solvents and water contents with y in 0.9989~0.9994. This method has the advantages of low cost, good reproducibility, good sensitivity, simple in operation, fast in detection, friendly to the environment and no limitation on linear range for determining water content. It was used to determine water in samples with a satisfactory recovery in 97.81%~101.24%.
其他文献
A new kind of biodegradable pH-sensitive drug delivery system was developed via chitosan-albumin conjugate hydrogel. Through changing the feeding modes of react
To quantify the effect of the interaction of non-residual fractions[Fe oxides(Fe), Mn oxide(Mn), organic materials(OMs)] in the surficial sediments and the natu
Axisymmetric liquid jets have been studied extensively for more than one century, while non-axisymmetric jets are also very common in engineering applications b
In this article, we introduce a coupled approach of local discontinuous Galerkin and standard finite element method for solving convection diffusion problems. T
Nano-sized γ-alumina(γ-Al2O3)was first prepared by a precipitation method.Then,active component of cobalt and a series of alkalineearth metal promoters or nic
The flotation of diaspore and kaolinite by one of a series of tertiary amines (DRN, DEN, DPN and DBN) was investigated. The tertiary amines show better floating
We present results of 13CO(1-0), C18O(1-O), and HCO+(1-0) map ob-servations and N2H+(1-O) single point observations directed towards a sample of nine low-lumino
Sumoylation is an important protein modification discovered recently. SUMO(small ubiquitin-related modifier) pathway regulates the protein stability and transcr
Zeolite P was synthesized for the first time via a novel water-bathing route at 90℃ using scrubbed diatomite, sodium hydroxide, and aluminum hydroxide as precu
Nucleophilic aromatic substitution of hydrogen in non-activated aromatic ring, a very rare phenomenon in organic chemistry, is found in ionic liquids containing