卤

The invention discloses an application of polyhalogenated acridone compound in a buffer solution as a pH fluorescent probe for high selective identification of hydrogen ions.

本发明公开了一种多卤代吖啶酮类化合物作为pH荧光探针在缓冲溶液中对氢离子高选择性识别的应用。

Aim To study the chemical constituents of Acrostichum aureurm.

目的对红树植物卤蕨的化学成分进行研究。

Results Six compounds were isolated from the ethanol extracts of Acrostichum aureurm,and their structures were elucidated as ponasterone A(1),pterosterone(2),kaempferol(3),quercetin(4),4-(3,4-dihydroxyphenyl)-2-butanone(5),and daucosterol(6),respectively.

结果从卤蕨乙醇提取物中分离得到6个化合物，分别鉴定为ponasterone A(1)、pterosterone(2)、山奈酚(3)、槲皮素(4)、4-(3，4-二羟基苯基)-2-丁酮(5)、胡萝卜苷(6)。结论6个化合物均为首次从该植物中分离得到。

Medicinal chemistry ; structural identification ; column chromatography ; Acrostichum aureurm ; chemical constituents

药物化学；结构鉴定；柱色谱法；卤蕨；化学成分

ABSTRACT To study the antibacterial constituents from the fermentation broth of endophytic fungus Penicillium sp. 0935030 from mangrove plant Acrostichum aureurm. The separation procedure was guided by antibacterial bioassay. Seven compounds were isolated and purified by column chromatography, and their structures were identified as cyclo (1), cyclo (2), 1(2Furanyl)1,2ethanediol (3),(3β,4β,22β)olean12ene3,22,23triol (4), mannitol (5), uridine (6), and liquiritigenin (7) by physicochemical and spectral data.

为研究红树林植物卤蕨内生真菌Penicillium sp.0935030发酵物中的抗菌活性成分，采用活性追踪的方法，用多种色谱技术对化合物进行分离纯化，通过理化性质和光谱数据鉴定出7个化合物，分别为：环(1)，环(2)，1呋喃基1，2乙二醇(3)，(3β，4β，22β)12烯3，22，23三羟基齐墩果烷(4)，甘露醇(5)，尿苷(6)和甘草素(7)。

Is a replaceable function, e. g. acetoxy, methoxy, their acyloxy and alkoxy homologs or halo .

是取化基，如乙氧基、甲氧基及它们的环氧和烷氧同系物或卤基。

Keywords Adsorbable organic halogen\ Ozone oxidation\ Granular activated carbon\ Powdered activated\ carbon

可吸附有机卤化物；臭氧氧化；粒状活性炭；粉末活性炭

In the reactor with 7.5% carrier filling factor, when the amount of material supplied is 3.2L/d,the capacity aerogenesis rate will be the maximum 1.21 L/L?

当用于水处理时，它不仅可以作为一种优良的吸附材料净化水中的多种分类化合物和卤代烃，而且具有优异的

Based on using the alkaliferous brine from the diaphragm production system as the feed water for the ion-exchange membrane production system and enhancing the ratio of bittern doping,make full use of the alkaliferous brine produced by the evaporat.

无锡化工集团格林艾普化工股份有限公司面对原材料涨价的不利局面，通过严格的试验和分析，采用价廉的原材料进行了两次技术改造，在以隔膜生产系统碱盐水为离子膜生产系统原料水、提高掺卤比的基础上，利用离子膜淡盐水溶化来自蒸发离心机的碱盐，最大幅度地提高了卤水的用量，进一步降低了生产成本，增强了产品的竞争力，创造了较大的经济效益。

While investigating Pd-catalyzed cross-coupling reactions between alkenyl halides and azides to yield vinyl azides, 1 H -1,2,3-triazoles were obtained as the main product.

在调查钯催化交叉偶联反应之间烯卤化物、乙烯产量叠叠，1小时-1，2，3-三唑为主要产品均获得。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。