Utilizing the intense catalysis of metal ions to peroxide oxygenating rhodanine, a catalytic fluorescence method of using the new type rhodanine to determine trace iron, cobalt, copper, tin and antimony was established.

利用痕量金屬離子對過氧化氫氧化若丹寧具有強烈催化作用的性質(zhì)无码视频一区二区三区无码，建立了一系列利用新型若丹寧物質(zhì)催化熒光法測定痕量鐵www.A片欧美视频、鈷学生妹人人操人人干人人、銅免免费看成人片永久视频、錫和銻的新方法；較系統(tǒng)研究了系列若丹寧衍生物在催化熒光法測定金屬離子的各影響因素久色入口，確定了反應(yīng)的最佳條件日韩一级免费网站，計算了動力學(xué)參數(shù)。

According to this, a series of new methods to determine trace cobalt, copper, antimony, cadmium, aluminum and iron was established by taking advantage of the characteristic of metal ions with intense catalysis effect on hydrogen peroxide oxygenating rhodanine.

基于此久久免费黄片，利用痕量金屬離子對過氧化氫氧化若丹寧具有強烈催化作用的性質(zhì)欧美激情亚洲色图，建立了一系列利用新型含羧酸基偶氮若丹寧衍生物催化熒光法測定痕量鈷、銅国产黄色av大片、銻羞羞视频免费看网站、鎘、鋁和鐵的新方法日韩午夜一区二区福利影院。

Germanotungtic acid catalyst can be used repeatedly. germanotungtic acid ; catalysis ; synthesis ; isoamyl salicyl

雜多酸及其鹽是由雜多陰離子與反荷陽離子按確定比例組成的多核配合物亚洲91九色视频，具有金屬氧化物和

The results show that the SAPO–5 has a pillar-like morphology with the size of about 20 μm×5 μm×5 μm.The ratio of P:Al:Si is 1:1.19:0.67 in its crystal structure, the content of Si is high. The total acidimety fo the SAPO–5 is 578.0 μmol/g , hihger than that of prepared by one step crystalline hydrothermal method.And its initial catalysis character performance on normal butane isomerization reaction reach 24.8 %, higher than that of prepared by one step crystalline hydrothermal method.

實驗結(jié)果表明：產(chǎn)物為柱狀的磷酸硅鋁分子篩，其晶粒尺寸大約為20 μm×5 μm×5 μm国产成人高清亚洲影院在线观看，其晶體結(jié)構(gòu)中P：Al：Si＝1：1.19：0.67久久久国产一级A片，硅含量較高；采用分段晶化方式制備的SAPO-5分子篩的總酸量為578.0 μmol/g高于一段晶化方式制備的SAPO-5分子篩的總酸量欧美最婬乱婬暴婬性视频；采用分段晶化生成的SAPO-5分子篩的催化正丁烷異構(gòu)化反應(yīng)初始活性可達到24.8 %91超碰在线观看，遠高于一段晶化制備的SAPO-5分子篩的初始活性14.1 %。

Dioctyl sebacate was prepared by esterification of 2 ethylhexyl alcohol and sebacic acid in catalysis of aluminate.

以癸二酸與2－乙基己醇為原料日韩A片视频免费观看，鋁酸鹽為催化劑久在线视频，合成了癸二酸二辛酯。

Silicotungstic acid ; acetylsalicylic acid ; catalysis ; synthesis

乙酰水楊酸在线视频国产激情； SiW12/C 艹艹艹WWW；催化；合成

Methods Thirty-five students daytime urine samples were collected,and determined by both national standard method (WS/T107-1999) and on-line digestion-flow injection catalysis spectrophotography method of UI automatic analysis device respectively.

采集35名學(xué)生的日間尿樣国产一级毛片AAA高清，分別按照國家標(biāo)準(zhǔn)方法（WS/T107-1999）與尿碘自動分析裝置的操作說明進行測定免费全部午夜电影手机在线观看，并對自動分析裝置的性能進行檢驗。

A few spiro ligands have been successfully synthesized and applied in asymmetric catalysis .

手性螺環(huán)配體的合成及其在不對稱催化反應(yīng)中的應(yīng)用是不對稱合成和催化研究中重要的研究領(lǐng)域之一高潮喷水网站，一些手性螺環(huán)配體被合成出來并成功地應(yīng)用于不對稱催化反應(yīng)中人人干人人操免播放器。

These measurements provide a reliable basis for liquid carbon dioxide as catalyst in cold clouds, which is a catalysis technique suitable for artificial rain enhancement in warmer stratiform clouds in our country.

這些測定結(jié)果為使用LC作為冷云催化劑提供了可靠依據(jù)，為國內(nèi)在較暖云頂層狀云中開展人工增雨作業(yè)提供了合適的催化技術(shù)欧美精品一区二区三区视频在线播放。

Methods The target compounds were prepared by using Pechmann reaction under catalysis by sulphamic acid and microwave irradiation. All the structures were confirmed by IR, 1H-NMR spectra.

在微波輻射和氨基磺酸的催化作用下經(jīng)Pechmann反應(yīng)得到相應(yīng)產(chǎn)物白色白色在线视频，其結(jié)構(gòu)經(jīng)IR、1H-NMR波譜確證91网站免费看国产。