摘要
本实验测定了掺杂贵金属及Ｖ２Ｏ５等金属氧化物对此热线型氨敏元件的灵敏度及选择性的影响。发现加入０．７５％的金，再浸沉１％的钒酸盐溶液对氨有较高的灵敏度和较好的选择性。对１００ｐｐｍ的ＮＨ３响应时间为５０ｓ。此热线型氨敏元件具有功耗低（１５０ｍＷ），初期稳定时间短，长期稳定性较好的特点。
The addition effects of precious metal and some metal oxides such as V 2O 5 on the sensitivity and selectivity of this hotwire-type ammonia sensor were investigated. The addition of 0.75% gold and the impregnation of 1% vanadate afforded to the most prominent selectivity and sensitivity of ammonia.The response time to 100ppm ammonia was 50 seconds.This hotwire-type ammonia sensor had the characteristics of low power(150ppm),short initial stable time and good long stabability.
出处
《仪表技术与传感器》
CSCD
北大核心
1998年第5期29-31,共3页
Instrument Technique and Sensor
基金
吉林省科委资助项目
