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- The interference of reductant is eliminated by indirect iodimetry in the weak acidic medium and the content of potassium iodate is determined by direct iodimetry under acidic condition. 在弱酸性介质中,利用间接碘量法消除还原物的干扰,于酸性条件下采用直接碘量法测定碘酸钾含量。
- weak acidic condition 弱酸条件
- Air,Compressed ari, Water, hotn water, weak acid, etc. 空气、压缩空气、水、海水、热水、弱酸等。
- They have a high tolerance of acid conditions. 它们对酸性环境有很强的耐受性。
- Protect A is resistant to various chlorides, oils, sulphur compounds, chlorine compounds and weak acidic media. 保护能抵抗各种氯化物,油,硫化合物,氯化合物和弱酸性介质。
- Using normal alkalic shower gel will destroy the weak acidic environment and weaken the protective action. 但使用一般碱性沐浴露,会破坏私处的弱酸环境,减弱保护作用。
- OBJECTIVE:To study the process of acetylized racemization of D-penicillamine in the acidic condition. 目的研究D-青霉胺在酸性条件下进行酰化外消旋的工艺。
- Counter etch A weak acid solution, e. G. Acetic acid, used to clean a plate chemically before coating. 清洗腐蚀剂化学性的版面清洗,在涂布乐膜前使用。它是一种弱酸溶液,如醋酸等。
- Diphenylbenzidine was synthesized by diphenylamine using glacial acetic acid and water as solvent in acidic condition. 以二苯胺为原料,水和冰醋酸为溶剂,在酸性条件下一步合成二苯基联苯二胺,该方法具有操作简单,原料易得等优点。
- Counter etch: A weak acid solution ,e.g. acetic acid , used to clean a plate chemically before coating . 清洗腐蚀剂:化学性的版面清洗 ,在涂布乐膜前使用。它是一种弱酸溶液,如醋酸等。
- To precipite organic substance EDTA under acidic condition, tartaric acid form calcium salf and then removed. 然后对有机物EDTA在酸性范围沉淀去除,酒石酸使呈钙盐去除。
- They involve a chemical equilibrium between a weak acid and its salt or a weak base and its salt. 它包含弱酸及弱酸盐与弱碱和弱碱盐之间的化学平衡。
- Apply to water, water, steam, all kinds of oils, solvents, weak acid, alkali, ethanol, and other media. 适用于水、海水、蒸汽、各种油类、溶剂、弱酸、碱、乙醇等介质。
- Hydrolysable tannin may be degraded to glucose,gallic acid,ellagic acid and valonia acid in the acid condition. 水解类植物鞣质在酸性条件下能降解,其降解产物可起到还原、蒙囿以及与金属盐络合的作用。
- Weak acids ionize partly ( <1% ionize) in water to give hydrogen ion. 弱酸在水中部份电离(<1%25电离),放出氢离子。
- The results showed that this kind of pigment had a good stability to light, heat and common food additives under acidic condition. 结果表明,该色素在酸性条件下对光、热、常用食品添加剂均具有较好的稳定性。
- The results show that the antiseptic result with Zn as sacrifice anode to X70 steel in weak acidic solution with H_2S is excellent. 结果表明:以Zn作为牺牲阳极对含H2S酸性溶液中的X70钢具有较好的防腐效果;
- One was to bring down the fever, another a purgative, the third to overcome an acid condition. 一种药退烧,另一种润肠,通便,还有一种是去酸。
- In the presence of micelle of CTMAB, the fluorescence intensity of eosin-ITC in weak basic medium is even higher than that of in weak acidic medium. 当有CTMAB胶束存在时 ,Eosin NCS在弱碱性介质中荧光强度可达到甚至超过其在弱酸性介质中的荧光强度。
- Abstract: Diphenylbenzidine was synthesized by diphenylamine using glacial acetic acid and water as solvent in acidic condition. 摘 要: 以二苯胺为原料,水和冰醋酸为溶剂,在酸性条件下一步合成二苯基联苯二胺,该方法具有操作简单,原料易得等优点。