查询词典 picric acid

Main production sulfide Green, Chloropicrin, picric acid, dinitro-chlorobenzene, potassium chlorate, high sodium chlorate, ammonium perchlorate, such as more than 30 kinds of products, exports of Asia and Europe more than 30 countries and regions. In 2000 through ISO9002 quality system certification, production scale, cost-effective, enterprise management, technological advancement, product quality, environmental protection are rising, has very broad prospects for development.

主要生产硫化青、氯化苦、苦味酸、二硝基氯化苯、氯酸钾、高氯酸钠、高氯酸铵等30多种产品，出口亚欧30多个国家和地区。2000年通过ISO9002质量体系认证，生产规模、经济效益、企业管理、技术进步、产品质量、环境保护均不断提升，具有十分广阔的发展前景。

After picric acid in water sample being chlorinated,chloropicrin is measured with ECD gas phase chromatography to determine the concentration of picric acid ,and quality is determined by retention time and quantity by external standard method.

将水样中的苦味酸氯化后，用ECD气相色谱法测定氯化苦的量，来确定苦味酸的浓度。

By means of interaction of picric acid with crystal violet and by utilization of cyclohexane ex?

上海宝钢化工有限公司，上海 200942

The ammonia was evaporated under decreasing pressure, and the precipitate was filtered off and the liquid was poured into hot saturated picric acid solution to get picrate with a yield of 85.0%. The optimum process starting from imidazole-4,5-dicarboxylic acid was: imidazole-4,5-dicarboxylic acid in acetic anhydride was refluxed to get imidazole-4-carboxylic acid, and the product was esterification in ethanol with a catalyzer of concentrated sulfuric acid to get ethyl imidazole-4-carboxylate, at last the compound above was reduced by LiAlH4 in ether at room temperature to get the target compound, the total yield of this route was 49.6%.

以4，5-二羧酸咪唑为原料的较佳工艺：1 脱羧反应：4，5-二羧酸咪唑40g，醋酐1200ml，回流10h，过滤并将滤液浓缩至干，所得固体加至50%的乙醇溶液回流，过滤并将滤液自然冷却过夜，过滤得固体；2 酯化反应：4(5)-羧酸咪唑50g，乙醇1000ml和浓硫酸60ml，加热回流2h，5%浓度NaOH溶液调节至pH＝8，减压浓缩至干，加入少量水回流，自然冷却过夜并过滤得固体；3 还原反应：LiAlH410g，乙醚300ml和4(5)-羧酸咪唑乙酯28g，常温反应1.5h，小心滴加25ml水后过滤，滤渣溶于300ml甲醇中并过滤，收集所得乙醚和甲醇滤液浓缩至干，将所得固体溶于300ml乙醇中加热回流，后将溶液浓缩至约30ml，冷却并过滤得固体，该路线总收率为49.6%。

Methods: A staining method combining Masson Fontana silver nitrate, Ponceau S, Picric acid and Victoria blue (MFSNP-PA-VB) was used in the present animal skin experimental.

选用Masson Fontana silver nitrate-Ponceau S-Picric acid-Victoria blue （Masson Fontana硝酸银、丽春红S、苦味酸和维多利亚蓝，简称MFSN-P-PA-VB）对实验动物皮肤组织进行组合染色。

E and Sirus red in supersaturated picric acid solution;the amount of HA in serum was measured with the method of radiative immunity;the quantitative expression of fibrosis factor—TGF、PDGF was measured with the method of immunity histochemistry.Results:Myocardial collagen in model group increased obviously compared with normal group from the results of electron microscope、H.E、Sirus red in supersaturated picric acid solution.

腹腔注射柯萨奇B3病毒建立病毒性心肌炎慢性期心肌纤维化小鼠模型，随机分为模型对照组、通心络低剂量组、中剂量组、高剂量组，并设正常对照组，用药四周后处死动物通过透射电镜观察心肌细胞超微结构；HE染色、苦味酸天狼星红染色观察心肌胶原数量；放免法测定血清透明质酸的含量；免疫组化染色观察致纤维化细胞因子—转化生长因子和血小板衍生生长因子的定量表达。

Flash pyrolysis of carbohydrazide picric acid,semicarbazide picric acid and aminoguanidie picric acid is conducted by using T-jump/Fourier transform infrared spectroscopy.

利用温度跃升傅里叶变换红外原位分析技术(T-jump/FTIR)对苦味酸碳酰肼，苦味酸氨基脲和苦味酸氨基胍的快速热分解过程进行了研究，利用快速扫描傅里叶变换红外光谱在线检测气相产物的种类及浓度变化趋势。

Beer alcohol content less contains tannic acid, picric acid could stimulate appetite and help digestion and heat effect.

啤酒酒精含量少，所含的鞣酸、苦味酸有刺激食欲、帮助消化及清热的作用。

Low alcohol content of beer, contains tannic acid, picric acid have to stimulate the appetite and help digestion and heat effect.

啤酒的酒精含量少，所含的鞣酸、苦味酸又有刺激食欲、帮助消化及清热的作用。

Traction and by adoption of spectrophotometry to direct measurement of concentration of picric acid in desulfurized solution, a new method for determination of the concentration of picric acid in desulfurized solution.

摘 要：通过苦味酸与结晶紫缔合，利用环己烷萃取，采用分光光度法直接测定脱硫液中苦味酸的浓度，从而建立了1种测定脱硫液中苦味酸的新方法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。