发明名称 |
Verfahren, Sensorelement und Gassensor zum Nachweis von Stickstoffdioxid |
摘要 |
<p>A mixture of a diazotizing reagent which reacts with nitrous ions to produce a diazo compound, a coupling reagent which couples with a diazo compound to produce an azo dye, and an acid is placed in pores of a transparent porous body to prepare a sensor element (103a). Nitrogen dioxide gas is sensed in accordance with a color change before and after the sensor element is exposed to air to be measured for a predetermined time. In a preferred embodiment, the diazotizing reagent is sulfanilic acid and the coupling reagent is N,N'-dimethylnaphthylamine (DMNA). A compact photometer for use with the sensor element is also described.</p> |
申请公布号 |
DE69809162(D1) |
申请公布日期 |
2002.12.12 |
申请号 |
DE1998609162 |
申请日期 |
1998.08.27 |
申请人 |
NIPPON TELEGRAPH AND TELEPHONE CORP., TOKIO/TOKYO |
发明人 |
TANAKA, TOHRU;HAYASHI, TAKAYOSHI;MATSUMOTO, SHIRO;MARUO, YASUKO;OHYAMA, TAKASHI |
分类号 |
G01N21/78;G01N31/22;(IPC1-7):G01N21/78 |
主分类号 |
G01N21/78 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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