SU813250A1 - Method of measuring content of chlororganic compound in air - Google Patents

Description

(54) METHOD FOR DETERMINING THE CONTENT OF ORGANORORGANIC COMPOUNDS IN AIR

sodium sulfate. Next, 2 ml of the solution is transferred to a colorimetric tube for analysis. At the same time, a standard scale is prepared according to the table.

 Then, 0.2 ml of silver sulphate solution is added to all the test tubes of the scale and to the samples, stirred, and after 5 min they are not left to neelometry.

The calculation of the results of the analysis produced by the formula

a b k 1000 s V (Vo - 10) General view of the investigated thief, ml;

b amount of chlorine found in the analyzed volume, µg sample volume taken for analysis, ml;

air volume studied

Vn reduced to normal conditions, ML;

ten

volume occupied by petroleum ether (gasoline, hexane) in the gaseous state, ml (rounded);

k factor conversion chlorine organochlorine compound.

. Thus, the proposed method with an instantaneous exothermic reaction allows for faster testing compared to the known one by 15 times (according to the proposed method, anaLysis of the determination of organochlorine compounds is carried out in 6-7 minutes, and in a known manner in 90-100 minutes).

The advantage of the method is also determined by its simplicity (technological steps such as cleaning the drawn air, adjusting the air supply rate and burning rate are excluded).

In addition, the proposed method is improved and, compared to the known, the speed of analysis is doubled (the analytical analysis is carried out in 6-7 minutes instead of 10-15 minutes).

It is important that the known method is limited to the determination of methylene chloride only, and the proposed one is a group method and can be used for a whole class of organochlorine compounds.

Claims (1)

Claim A method for determining the content of organochlorine compounds in air by reacting an organochlorine compound with a combustible agent and oxygen with the release of hydrogen chloride, trapping it in an absorbing solution and analyzing a solution, characterized in that, in order to accelerate and simplify the method, the reaction is carried out in a sealed vessel containing the analyte , a combustible agent in the form of vapors, an absorption solution and air by igniting a spark and exploding a combustible mixture, mixing a gas mixture with a solution, and analyzing the solution.