pyrocatechol

A kinetic spectrophotometry for determining trace vanadium in environment has been established, which is based on the catalytic effect of vanadium on the oxidation of o ─ phenlonediamine with potassium bromate in the presence of activator pyrocatechol in KHP ─ HCl buffer solution.

基于V（v）在KHP&HCl缓冲溶液中，邻苯二酚活化剂存在下，对溴酸钾氧化邻苯二胺的催化作用，建立了一个测定环境样品中痕量机的催化动力学光度法。

Studies on Extraction Spectrophotometry of Ternary Molybdenum(ⅵ) 4 ( 5 Bromo 2 Thiazolylazo) Pyrocatechol Diphenyl Guanidine Ion Associate

钼（Ⅵ）-4-（5-溴-2-噻唑偶氮）邻苯二酚-二苯胍三元离子缔合物的萃取分光光度研究

If the assumed mechanism of pyrocatechol is correct, the inhibited gypsum may react on a later stage and lead to a kind of delayed ettringite formation that could generate expansion and cracking.

如果假定上述机理是正确的，那么被抑制溶解的石膏会在水化后期发生反应，导致延迟钙矾石生成并使水泥浆体产生膨胀开裂。

The inhibition of pyrocatechol on sulfite oxidation was investigated by oxygen removal and air oxidation tests.

通过除氧试验和空气氧化试验,研究了焦儿茶酚对亚硫酸盐自动氧化的阻滞作用.

Market prospect and production methods for pyrocatechol and hydroquinone are reviewed.

概述邻苯二酚、对苯二酚的市场前景、生产方法.

Factor analysis-UV Spectrophotometry was used simultaneously to determine the contents of a three-component system consisting of pyrocatechol, resorcinol and hydrochinone. The method was simple and fast, with a recovery of 93. 52~ 107. 20% and an average percentage error of 2.17%.

本文运用因子分析-紫外分光光度法同时测定邻苯二酚、问苯二酚和对苯二酚三组份含量，方法简单快速，回收率93.52～107.20%，平均百分误差2.17%。

Application of Pyrocatechol Violet to Spectrophotometric Analysis of Trace Cadmium Determination

邻苯二酚紫在光度分析测定痕量镉中的应用

Treatment of waste water containing pyrocatechol catalyzed by horseradish peroxidase ( HRP ) was studied.

研究了用辣根过氧化物 酶 催化处理邻 苯二酚 废水的效果.