FIELD: gas analysis. SUBSTANCE: described is composition for coating of piezoquartz sensor. Polyethyleneglycol succinate based composition comprises aluminium chloride. Composition makes it possible to carry out determination of naphthalene and anthracene in air in the presence of benzene vapors at levels of 0.7 and 0.6 mg/cu.m, respectively. EFFECT: greater sensitivity of determining naphthalene and anthracene. 1 tbl
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