TY JOUR TI COMPARATIVE ANALYSIS OF METHODS FOR MEASURING ACETYLENE IN ETHYLENE IN POLYETHYLENE PRODUCTION KW ethylene production KW acetylene content in ethylene KW methods of acetylene measurement JO Modern Technologies and Scientific and Technological Progress AU Il'ina, I.L. PY 2026 IS 2026 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»