| BPR氧化减色法测定过氧化氢亨利常数 |
| |
| 引用本文： | 陈忠明,屈小草. BPR氧化减色法测定过氧化氢亨利常数[J]. 光谱学与光谱分析, 2005, 25(7): 1114-1117 |
| |
| 作者姓名： | 陈忠明 屈小草 |
| |
| 作者单位： | 北京大学环境模拟与污染控制国家重点联合实验室,北京大学环境学院,北京,100871;北京大学环境模拟与污染控制国家重点联合实验室,北京大学环境学院,北京,100871 |
| |
| 基金项目： | 国家自然科学青年基金（20107001）,国家重点基础研究发展规划项目（2002CB410802）和教育部优秀青年教师资助计划资助 |
| |
| 摘 要： | 利用冷阱收集气-液平衡管出来的气相过氧化氢,以及氯化血红素(Hemin)催化下溴邻苯三酚红(bromopyrogallolred,BPR)被过氧化氢氧化减色的分光光度法检测,测定了温度依赖的过氧化氢亨利常数。在10~35℃的范围内,过氧化氢亨利常数KH(mol·L-1·atm-1)表达为lnKH=a/T-b,其中a=7269±22,b=13·26±0·08,T为温度(K)。过氧化氢溶解焓ΔH为60·43±0·18kJ·K-1·mol-1。
|
| 关 键 词： | 亨利常数 过氧化氢 大气 分光光度法 |
| 文章编号： | 1000-0593（2005）07-1114-04 |
| 收稿时间： | 2003-12-28 |
| 修稿时间： | 2003-12-28 |
Henry's Law Constant Measurement for Hydrogen Peroxide Using Oxidative Decoloration of BPR |
| |
| CHEN Zhong-ming,QU Xiao-cao. Henry's Law Constant Measurement for Hydrogen Peroxide Using Oxidative Decoloration of BPR[J]. Spectroscopy and Spectral Analysis, 2005, 25(7): 1114-1117 |
| |
| Authors: | CHEN Zhong-ming QU Xiao-cao |
| |
| Affiliation: | The State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences, Peking University, Beijing 100871, China. |
| |
| Abstract: | The temperature-dependent Henry's Law Constant for hydrogen peroxide was measured. The gas phase of hydrogen peroxide from the vapor saturator collected in a cryogenic trap was analyzed by a spectrophotometric determination, based on the oxidative decoloration of BPR (bromopryogallol red) reaction with hydrogen peroxide under the catalysis of hemin. At 10 degrees C - 35 degrees C, the relationship between Henry's Law constant K(H) (mol x L(-1) x atm(-1)) of hydrogen peroxide and temperature T (K) can be expressed as ln K(H) = a/T - b, where a = 7 269+/-22, and b = 13.26+/-0.08. The standard heat of hydrogen peroxide aqueous solution is 60.43+/-0.18 kJ x K(-1) x mol(-1). |
| |
| Keywords: | Henry's law constant Hydrogen peroxide Atmosphere Spectrophotometry |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
