生物热化学系统的微量热方法研究——Ⅰ.微热量计的研制

生物热化学系统的微量热方法研究——Ⅰ.微热量计的研制 STUDIES ON MICROCALORIMETRIC METHOD OF BIOLOGICAL THERMOCHEMICAL SYSTEM Ⅰ.Development of a new type microcalorimeter 汪存信 Wang Cunxin Song Zhaohua Di Youying Feng Ying Zhou Peijiang Qu Songsheng 1 first-author 宋昭华 1 邸友萤 1 冯英 1 周培疆 1 屈松生 1 武汉大学化学系 武汉大学化学系 Department of Chemistry,Wuhan University Department of Chemistry,Wuhan University 本文介绍了一种适于生物热化学研究、结构新颖的微热量计.阐述了热量计的设计原理,并对其结构进行了详细描述.热量计反应池容积为25 mL,检测灵敏度为0.12 mW·L - 1测试精度≤士1%。恒温水溶控温精度为±0.001 K.用量热标准物质 KCI 对仪器进行了标定,测得 KCI 溶解热为17571±21 J·mol -1 ,与文献值吻合. In this work,a new type microealorimeter for biological thermochemistry has been de- veloped. Its design priciple and constitution were intriduced. Its effective volume of reaction cell is 25 mL limit of detectability is 0. 19. mW·L -1 ,determinable precision is < ± 1% ,the precision of thermo- stat control temperature system is < ±0. 001 K. We had callibrated the performance of microcalorme- ter with the standary reference material KCI, its heat of solution is 17 571±21 J·mol -1 . The testing data conforms correctly to the literature value 17 524 J· mol -1 . 热化学 量热学 微热量计 thermochemistry calorimetry microcalorimeter O642.3 国家自然科学基金资助的课题 1993-05-01 2021-04-01 5