METHOD OF DETERMINING QUALITY OF COAL PRODUCTS Russian patent published in 2014 - IPC G01N30/00 

FIELD: chemistry.

SUBSTANCE: invention relates to analytical chemistry, namely to methods of studying properties of coal products by the results of chromatographic analysis. Method of determining quality of coal products includes application of liquid sample with dissolved in it coal substance on the start line on chromatographic plate, which contains a sorbent layer. One or several drops of sample of analysed substance of equal concentration, but of different quantity, are applied on the start line. After that eluent is passed through plate and diameter of each spot of analysed substance sample and height of peak of each sample spot, which did not separate from the start line, are measured. After that liquid sample with dissolved in it standard coal substance is applied on the start line on chromatographic plate, which contains a layer of sorbent. One or several drops of sample of standard coal substance of equal concentration, but of different quantity, are applied on the start line. After that eluent is passed through plate and diameter of each spot of standard substance sample and height of peak of each sample spot, which did not separate from the start line, are measured. Further, height of peaks of standard substance spot and spot of analysed substance, which have on the start line equal size, are compared; assessment of degree of condensation of analysed coal substance relative to standard coal substance is carried out by the results of comparison.

EFFECT: possibility to predict exploitation qualities and properties of coal products by index of condensation.

2 cl, 2 dwg