苦味酸

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。

Either sodium picrate, which is converted to sodium isopurpurate, or a freshly prepared solution of guaiacum resin in absolute alcohol which is allowed to dry on the paper and treated with very dilute copper sulphate solution. The latter test-paper turns blue with prussic

acid。苦味酸钠试验：将生药研碎，取0.5g放入试管中，加数滴水润湿，加塞密闭，管口内悬挂一条用碳酸钠溶液润湿的苦味酸试纸，将试管置40～50℃水浴进行酶解，试纸转为砖红色，若是悬挂联苯胺-硫酸铜试纸，则应生成联苯胺氧化物而使试纸变蓝色。

This study shows that all of these compounds exhibit good extraction abilities toward Ag~+ and Hg~(2+), and the highest extraction percentages are 38.4% and 40.5%, respectively, toward sliver and hydrargyrum picrates.

结果表明，所合成的化合物对于Ag~+和Hg~(2+)表现出较好的选择性，苦味酸银和苦味酸汞的最高萃取率分别为38.4%和40.5%。

In the paper,a PVC membrane picric acid anion selective electrode is developed using Bromhexadecyl pyridine picrate ion pair as the active component and dioctyl phthalate as the plasticizer.

本文用苦味酸溴代十六烷基吡啶离子对作为电活性物质，以邻苯二甲酸二辛酯为增塑剂，研制成以PVC为基质膜的苦味酸离子选择电极。

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。

The optimum process starting from 1,3-dihydroxyacetone and formamidine acetate was: 22.54g(0.25mol) 1,3-dihydroxyacetone, 29.12g(0.28mol) formamidine acetate and 120ml isopropanol in liquid ammonia was heated to 40℃ for 8h.

以1，3-二羟基丙酮和醋酸甲脒为原料的较佳工艺：1，3-二羟基丙酮22.54g (0.25mol)，醋酸甲脒29.12g (0.28mol)，异丙醇120ml，通入液氨，40℃反应8h，减压蒸馏除去反应液中的氨气后过滤，滤液加至热的苦味酸饱和溶液，自然冷却至室温，制得4(5)-羟甲基咪唑苦味酸盐69.5g，收率85.0%。

A salt or an ester of picric acid.

苦味酸盐含苦味酸的盐或酯

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。

N-propyl-4-(N-methylacryloxy-ethyl)amino-1,8-naphthalimide was synthesized and used for determination of picric acid.

合成了N-丙基-4-(N-甲基丙烯酰基氧乙基)氨基-1，8-萘酰亚胺，研制出了苦味酸荧光光纤传感器，可间接测定药片中磷酸氯喹和水样中苦味酸的含量。

Methods 100 mg of muscle of rat corpse was preprocessed before trimethylamine was extracted with anhydro-methylbenzene, then trinitrophenol was added into extracts, and yellow compounds emerged. The optical density was detected by spectrophotometer at 410 nm and the concentration of TMA-N was calculated using the standard curve. Results There was good linear correlation (R^2=0.9991, P.001) between OD and the concentration of TMA-N in the range of 1~10 mg/L.

大鼠肌肉组织样本100 mg经预处理后，将三甲胺抽提于无水甲苯中，与苦味酸作用，形成黄色的苦味酸三甲胺盐，用分光光度计在410 nm处检测吸光度，标准曲线法计算TMA-N含量。

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。