A HIGH-SENSITIVITY TITRATION CALORIMETER USING PYROELECTRIC SENSOR

被引：4

作者：

MERABET, EK ^{[1
]}

YUEN, HK ^{[1
]}

GROTE, WA ^{[1
]}

DEPPERMANN, KL ^{[1
]}

机构：

[1] MONSANTO CO,MONSANTO CORP RES,ST LOUIS,MO 63167

来源：

JOURNAL OF THERMAL ANALYSIS | 1994年 / 42卷 / 05期

关键词：

MICROCALORIMETER; PYROELECTRIC SENSOR; TITRATION CALORIMETER;

D O I：

10.1007/BF02547110

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A new sensitive isothermal titration microcalorimeter using polyvinylidene difluoride (PVDF) as detector has been developed. Heat pulses of less than 0.4 mu J can be detected and the baseline noise level (p-p) is 40 nW. The calorimeter is constructed with one reaction cell (0.7 ml) insulated by several radiation shields inside a vacuum chamber. The performance of the instrument was examined by measuring the heat of protonation of Tris with HCl. The enthalpy of reaction was found to be -49+/-1 kJ.mol(-1), in good agreement with the reported value of -47.5 kJ.mol(-1).

引用

页码：895 / 906

页数：12

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