邻苯二酚

The recoveries of catechol and hydroquinone are found in the range of 83%-107% and 92%-100%, respectively.

该法用于测定水样中邻苯二酚和对苯二酚，回收率分别为83%~107%和92%~100%。

A synchronous fluorescence method for simultaneous determination of catechol and hydroquinone has been established.

建立固定波长同步荧光法同时测定邻苯二酚和对苯二酚的分析方法。

However, the PPD film prepared in acidic solution could penetrated catechol, in which reaction of catechol is irreversible.

因此，在离子液体中制备的聚邻苯二胺膜对邻苯二酚具有更好的稳定性。

The progerss in production and process research of hydroquinone and catechol were reviewed, and suggested that the composite oxide catalysts are the applicable catalysts in our country.

综述了邻苯二酚与对苯二酚的生产与研究现状，提出了复合氧化物类催化剂是适于我国国情的实用催化剂专利。

The concentrations of catechol and hydroquinone are linear with the intensity of synchronous fluorescence in the concentration range of 1.0×10^(-6)-9.0×10^(-5) mol/L and 1.0×10^(-6)-1.0×10^(-4) mol/L, with correlation coefficients of 0.998 6 and 0.999 1 and detection limits of 8.2×10^(-7) mol/L and 5.4×10^(-7) mol/L.

邻苯二酚和对苯二酚在1.0×10^(-6)~9.0×10^(-5)mol/L和1.0×10^(-6)~1.0×10^(-4)mol/L浓度范围内与同步荧光强度呈线性关系，相关系数分别为0.9986和0.9991，检出限分别为8.2×10^(-7)mol/L和5.4×10^(-7)mol/L。

The electrode processes of catechol and p -dihydroxybenzene on Pt electrode modified with PEDOT membrane are investigated.

研究了电化学聚合制备的聚乙撑二氧噻吩膜修饰电极对对苯二酚和邻苯二酚的电催化。

The change of Ortho chlorophenol and pyrocatechol, which were used as models of chlorophenol compounds and polyphenol compounds respectively during the electroanalysis process was also investigated in order to find degradation mechanism.

实验中以邻苯二酚和邻氯苯酚作为多酚类化合物、木素衍生物和氯酚类化合物的模型物，探讨了多酚类化合物和氯代酚在电化学处理过程中的降解机理。

The results showed that the amorphous iron oxide has highly catalytic activity. The intermediate products are pyrocatechin, hydroquinone, benzoquinone and low-grade fatty acid. The mechanism of catalyst oxidation is assumed that the free radical OH attacks benzene cycle at the adjacent position and para-position of OH on phenol so that the benzene cycle is opened and low-grade fatty acid is produced and transformed into CO2 and H2O.

结果表明，非晶铁氧化物催化剂在催化氧化降解苯酚时具有较高的催化活性，苯酚降解的中间产物有：对苯二酚、邻苯二酚、苯醌和低级脂肪酸，其降解机理是羟基自由基攻击苯环上OH的部位或对位而使苯环开环，生成低级脂肪酸，并最终转化成二氧化碳和水，从而使苯酚得以降解。

Xylem: Chinese P.chinensis Bge 49.15mg/g, Atlantic Ocean 46.58mg/g, UCB 55.28mg/g. 3.In certain condition, Gas-chromatograms and Mass spectrum are use to identifie phenol. Pistacia vera L .leave contain pyrocatechol 0.7640mg/g, pyrogallol 0.0580mg/g, gallic acid 1.03024mg/g, catechin 0.1040mg/g and coumaric acid by different pre-treatment methods.

采用不同方法提取阿月浑子叶片酚类物质，气相色谱-质谱法对其进行定性与定量分析，阿月浑子叶片中含有邻苯二酚0.7640mg/g；邻苯三酚0.0580mg/g；没食子酸1.3024mg/g；儿茶素0.1040mg/g，香豆酸；确定了最佳的前处理方法。

Comparison of inhibitors for anti-polymerization of isoprene, such as NaNO2, p-tert-butylcatechol, N-methyl pyrrolidone and paradioxybenzene, was carried out using polymer segregation process and the results showed that TBC was the best one.

采用聚合物离析法比较了亚硝酸钠（NaNO2）、对叔丁基邻苯二酚、N-甲基吡咯烷酮、对苯二酚对异戊二烯的阻聚效果，发现TBC阻聚效果最好。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。