SU735986A1 - Device for determining magnetic susceptibility of solutions - Google Patents

Description

The surface tension force arises, which is caused by the hysteresis of the thread displacement depending on the interaction force on the force of interaction with the field. In addition, additional displacement instabilities are introduced by various contaminants that can change the force of the interaction of the filament with the surface of the liquid. So when the thread diameter O ,, 05 mm, a force of more than 2 mg acts on the thread. Thus, this device allows to measure the magnetic susceptibility of a solution containing a paramagnetic con with a high magnetic susceptibility in an amount of more than 10 g / l with an accuracy of no less than 1%. ---

The purpose of the invention is to increase the sensitivity and accuracy of measurements of the magnetic susceptibility of solutions.

The goal is achieved by the fact that a known device consisting of a magnet, between the poles of which is placed a cuvette with the analyzed solution of ampoule weights suspended on a thread to the weights and immersed in the solution, is equipped with a vibrating plate mounted in the upper part of the joint, the sensor of which is immersed in the surface layer of solution.

The drawing shows a device for measuring the magnetic susceptibility of solutions;

It consists of a cuvette 1 fixedly mounted between the poles of the electromagnet 2 of the sealed ampoule 3, attached to the nausea. kva; rotary filament 4 to anlytic weights 5, having an electromagnetic device on the balance of the scales (on the hell out, not shown) and immersed in the solution, electrovibrator (on the heck, not shown) with the sensor 6, immersed. Feminine in the surface layer of the solution funnel 7 ,. cranes 8, 9 that serve to fill the cuvette with liquid. The device works as follows ...

Stationary tip 1 after flushing. Filled with test solution through Vorois 7 and taps 8, 9 so that the Filled ampoule 3 completely immerses with solution. Ampoule 3 is made of thick glass or quartz735986

The tube, filled with a solution with a known magnetic susceptibility, is sealed and attached to the weights on a quartz thread (with a diameter of 0.1-0.05 mm). The specific gravity of the ampoule must be greater than the specific gravity of the test solution. Then, for the entire measurement period, an electromagnetic vibrator with a frequency of 50 Hz and amplitude is included.

, 0.5 mm, a sensor with a diameter of 0.2 mm, immersed in the solution on the deep. Binu 1-3 mm, excites vibrations on the surface layer of the liquid. As a result, the action of the surface forces of the solution

the thread is minimized.

The force P is then measured, with which the solution acts on the ampoule 3, by compensating it with weights and an electromagnetic device. After that, an electromagnet is turned on, the voltage of which is at the location of the cell on the order of 4; 10 A / m: with constant current, magnetization of ± 0.1% and the second measurement of force 1 is carried out.

The magnetic susceptibility of the test solution is found from the formula

,-TO(.

ae

X

ae

where F is the magnetic field force acting on the sealed ampoule; R.-tsrl - force acting on the sealed ampoule with and without magnetic field; a) the bulk magnetic susceptibility of ampoule 3 and analyz-. my fluid is;

K. K. are the Prabrr constants determined when measuring solutions with known magnetic susceptibility. The operation of the proposed device was checked by measuring the magnetic susceptibility of solutions of iron III and copper P, the results were compared with the data obtained on the Gui scale and the known device. Comparative technical. The economic data of the device operation is shown in the table.

Claims (1)

Claim A device for determining the magnetic susceptibility of solutions, consisting of a magnet, between the poles of which a cuvette with the analyzed x is placed, is determined by the parameters of the weighing device with the solution, weights, an ampoule suspended on a thread from the scales and immersed in a solution, characterized in that, for the purpose increase the sensitivity and accuracy of measurements, equipped with a vibrator mounted in the upper part of the cell, the sensor of which is immersed in the surface layer of the solution.