The order of elution, as well as the migration time and separation efficiency of these compounds changes with the acidity of the solution, which suggests the disassociation of the hydrogen on the secondary amino group in these compounds.

它不僅影響化合物的遷移時(shí)間和分離效率国产一级毛片女人喷水视频，還改變其出峰順序殴美性久久久，這與堿性條件下化合物仲胺基上氫的電離有關(guān)a三级黄色性交。

It is that:(1) the related compounds in Metronidazole Buccal Tablets prepared by Chongqing Medical College can be tested by determining (321nm) the total peak area of the impurities;(2) The related compounds in Metronidazole Disodium Phosphate for Injection prepared by Chongqing Medical College can be test by determining (254nm) the total peak area of the impurities and the peak area of the largest impurity;(3) Ceftriaxone polymer in Ceftriaxone Sodium for Injection prepared by Chongqing Keru Pharmacy Co.

結(jié)果如下：①用HPLC一UV法6080午夜三级中文在线观看，在321nm處檢測人人色人人爱爱，用歸一化法計(jì)算超碰在线wwww，控制各雜質(zhì)峰面積的和亚洲色播爱爱爱爱爱爱爱爱，可檢查重慶醫(yī)科大學(xué)的注射用甲硝吟磷酸二鈉中的有關(guān)物質(zhì)：②用HPLC一UV法，在254nm處檢測公司三级片，控制雜質(zhì)峰面積的和及控制最大雜質(zhì)峰面積色哟哟亚洲一区二区三区四区，可對重慶科瑞制藥股份有限公司的注射用頭飽曲松鈉中的有關(guān)物質(zhì)實(shí)施控制；③用HPLC一Uv法日韩美女福利诱惑国产在线观看，在254nm處檢測七次社欧美在线精品第一页，按外標(biāo)法計(jì)算，可檢查注射用頭抱曲松鈉中的聚合物男人的午夜天堂国产一区；④用紫外分光光度法亚洲图片小说电影，在277nm波長處測定吸收度，按C6H9N303的吸收系數(shù)為377計(jì)算每片標(biāo)示百分含量国产j精品系列，可測定重慶醫(yī)科大學(xué)的甲硝哇口頰片的含量均勻度色综合色狠狠天天综合桃花影视；⑤用紫外分光光度法，在277run波長處分別測定釋放溶液20min91av视频免费在线观看、50min和90min的吸收度久久99精品店，按甲硝哇(C6H剝303)的吸收系數(shù)為377計(jì)算釋放度，可檢查重慶醫(yī)科大學(xué)的甲硝哇口頰片的釋放度日本乱人一级在线。

Based on the endocrine disrupter characteristic of alkyl phenol compounds, the short chain alkyl phenol compounds still have estrogen hormone effect, and their environmental effect must be pay attention in the pollutant control of NP.

根據(jù)烷基酚類物質(zhì)的內(nèi)分泌干擾特性91自拍视频国产欧美，短鏈烷基酚仍然具有雌激素活性，因此在壬基酚污染防治過程中應(yīng)給與足夠的重視超碰.com。

The influence of each condition on the reaction speed and yield was studied, and the optimal conditions were: the ratio of the amount of substance of aromatic amine and heptafluoro-isopropyl iodine was 1:1.1~1.5, the amount of substance of sodium dithionite, sodium bicarbonate, aniline compounds were respectively 1.1~1.3, the amount of substance of phase transfer catalyst TBAB and aniline compounds was 0.05~0.1, the concentration of aniline compound was 0.5~1.0 mol/L, reaction temperature was 10~20 ℃, and the solvent was aether.

最佳結(jié)果為：芳胺與七氟異丙基碘的物質(zhì)的量比1：1.1~1.5日本按摩高潮A级中文片,，連二亞硫酸鈉、碳酸氫鈉與苯胺的物質(zhì)的量分別為1.1~1.31024手机日韩看片你懂的，相轉(zhuǎn)移催化劑四丁基溴化銨與苯胺的物質(zhì)的量比在0.05~0.1三级毛视频，溶劑總用量使苯胺濃度在0.5~1.0 mol/L；反應(yīng)溫度10~20℃好爽又高潮了毛片A片；溶劑采用乙醚欧美熟妇XXXX性潮喷。取代基供電子性越強(qiáng)，反應(yīng)時(shí)間越短亚洲黄色在线观看网站，產(chǎn)率越高国产操B在线；氨基的對位優(yōu)先反應(yīng)，氨基的鄰位較難發(fā)生反應(yīng)国产老色批在线观看视频；且七氟異丙基總是優(yōu)先取代在芳環(huán)電子云密度較高的位置上国产视频欧美视频。

Because both ions in A and B sites of these compounds can be substituted by other ions with different electrovalence and radius in a wide range, their dielectric property is adjustable and can be optimized in a large scale. This implies that new type MWDC with advanced dielectric property may be exploited from these compounds and widely used.

該類化合物由于A、B位均可能被電價(jià)與半徑不同的陽離子在較寬的范圍內(nèi)取代亚洲白丝啪啪网，所以其介電性質(zhì)有較大范圍的調(diào)節(jié)與優(yōu)化的可能性国产裸身喷水视频在线观看，因此從該類化合物中極有可能開發(fā)出具有廣泛應(yīng)用前景的新型高性能微波介質(zhì)陶瓷材料。

Taking Au-Ag intergrowth compounds as an example this paper has reached the following conclusions. In the Au-Ag compounds of differem types of gold deposits as sequemially replaces Au, making up a continuous isomorphous series. The content of Au and Ag in native gold forms a regular pattern. The development of native gold and that of electrum have something to do with different types of gold deposits respectively. Abundances of trace elements in Au-Ag minerals are controlled by geological settings and geochemical fields. The above study provides new geological information and a new method for the study and exploration of gold deposits.

本文以金銀互化物的研究為例2021色色色，討論了在不同在因類型礦床中中文字幕在线播放欧美日韩，金－銀構(gòu)成一個(gè)連續(xù)的類質(zhì)同象系列，且變化是有規(guī)律可循亚洲视频国内自，其微量元素的含量與該礦床成礦地質(zhì)環(huán)境和相應(yīng)的地球化學(xué)場有關(guān)在线观看精品17页免费网站，從而為找礦提供了新的地質(zhì)信息，拓寬了尋找同類伴生元素礦床或發(fā)現(xiàn)新類型礦床的途徑欧美熟妇A片多毛。

It is some uncertain chlorinated compounds not pentachloro ethane and/or hexachloro ethane however that can be detected in most EOM from sedimentary rocks, indicating that the interaction of copper with chloroform can be restrained by EOM and/or they may be transformed into other chlorinated compounds.

銅對氯仿的催化會(huì)影響氯仿瀝青的定量和組成欧美一级婬片人妻欧美大片人。

As stated previously, we have assumed that all MCs are equipotent and we are treating them as a group of compounds and not as single compounds.

如前所述，我們認(rèn)為三级AAA片免费观看免费观看视频，所有主持人都equipotent 污黄网站日韩aⅴ，我們對待他們作為一個(gè)群體的化合物，而不是單一的化合物欧洲美女精品一区二区。

Based on the previous literatures, the following major innovation works were carried out in this dissertation:(1) The derivatization reaction conditions of ephedrine and pseudoephedrine with sensitive derivation reagent in aqueous system were studied and two new methods were developed for the assay of them by microemulsion electrokinetic chromatography and micellar electrokinetic chromatography with LIF detection. The sensitivity and analysis times were greatly improved compared with the previous reports;(2) A new method of CZE with indirect LIF detection was developed for the simultaneous determination of six coumarin compounds (esculin, esculetin, isofraxidin, genistein, naringin and sophoricoside) with fluorescein as the probe. The proposed method enlarges the application range of LIF detector, and provides new approach for the analysis of certain compounds difficult to derivatize;(3) Based on the above research, an MEKC with indirect LIF detection method for the simultaneous determination of adenine and guanine in DNA extracts from fungus, maize and soybean was established;(4) A new method for the investigation of the complexes formed between human serum albumin and ampicillin sodium under the simulated physiology conditions using laser light scattering technique was developed.

該論文在綜述前人工作的基礎(chǔ)上黄网站无码的视频，開展了如下未見文獻(xiàn)報(bào)道的創(chuàng)新性的研究工作：(1)使用靈敏的衍生試劑對麻黃堿和偽麻黃堿在水體系中的衍生反應(yīng)條件進(jìn)行了系統(tǒng)研究，建立了微乳電動(dòng)色譜-激光誘導(dǎo)熒光檢測法和膠束電動(dòng)色譜—激光誘導(dǎo)熒光檢測法測定麻黃堿和偽麻黃堿的靈敏分析新方法wwwA片网站国产，與以前的報(bào)道相比网络视频偷拍网，靈敏度和分析時(shí)間均有很大改善；(2)使用熒光素鈉作為背景熒光試劑2012在线中文字幕，建立了同時(shí)分析測定六種黃酮類化合物(秦皮甲素你懂的网页、秦皮乙素、異秦皮定18禁又污又黄又爽的网站、染料木素最新超碰在线免费观看、柚皮苷和槐角苷)的毛細(xì)管區(qū)帶電泳—間接激光誘導(dǎo)熒光檢測新方法，擴(kuò)大了激光誘導(dǎo)熒光檢測的應(yīng)用范圍综合色色色，對難衍生化合物的分離分析提供了一種新思路和新途徑A级黄片视频免费观看；(3)以熒光素鈉作為背景熒光試劑，建立了一種用于同時(shí)測定食品提取DNA中的腺嘌呤和鳥嘌呤含量的膠束電動(dòng)色譜—間接激光誘導(dǎo)熒光檢測新方法国产黄页在线观看黄A∨；(4)用動(dòng)態(tài)和靜態(tài)激光散射法研究了模擬生理?xiàng)l件下人血清白蛋白與氨比西林鈉鹽相互作用所形成的復(fù)合物免费裸体黄网站在线观看，為藥物分子與蛋白質(zhì)的相互作用、藥代動(dòng)力學(xué)等的研究提供了一種新思路亚洲国产二区。

PCBs at the beginning of the land fill were mainly composed of the 3-Cl and 5-Cl compounds. In the late of the land fill, 2-Cl compounds increased significantly. The main factor affecting the PAHs, PCBs contents were microbial degradation and transformation. Analysis of the pollutants source s indicated that PAHs in sludge were mainly derived from the waste water of refinery, coking plant, gasworks, smelt plant and pitch plant.

填埋初期污泥中PCBs主要以3-Cl和5-Cl化合物為主免费无码毛片免费看，填埋后期，2-Cl化合物大大增加很操亚洲美女，占總的PCBs含量的大部分影響PAHs在线视频xx、PCBs含量變化的主要因素是生物對PAHS的降解轉(zhuǎn)化根據(jù)污泥中各污染物的含量對污染物進(jìn)行源解析表明，污泥中PAHs主要來源于煉油廠欧美一级A片裸体视频、煉焦廠九九视频在线观看黄片、煤氣廠、冶煉廠和瀝青廠等排放的廢水中文字幕综合国产。