A nanosized Y(2)O(3)-based catalytic chemiluminescent sensor for trimethylamine

The development of a catalytic chemiluminescent trimethylamine (TMA) sensor is demonstrated in the present paper. Intensive chemiluminescence (CL) is detected when TMA is introduced over the surface of nanosized catalysts and subsequently catalytically oxidized by O(2) from the air, and four catalysts are investigated with the strongest CL intensity obtained on nanosized Y(2)O(3). This effect is utilized to develop a novel nanosized Y(2)O(3)-based catalytic CL sensor for TMA which under optimal conditions exhibits a wide linear range of 60-42,000ppm and a detection limit of 10ppm. An attractive advantage of this novel CL sensor is its high selectivity to TMA with negligible responses to many other gases such as NH(3) and organic vapors. This CL sensor has a short response time of less than 3s, and shows good stability when examined by continual introduction of TMA into the sensor for 96h. The applicability of this sensor to actual fish samples is also demonstrated in the paper.