【正文】 的平衡溫度、峰形，必須根據(jù)樣品的性質(zhì)選擇適當?shù)臍夥蘸蛪毫?。?）樣品純度測定利用Vant Hoff方程進行純度測定。8．檢測質(zhì)量的變化最常用的辦法就是用熱天平，通常測量有哪兩種方法？偏斜式天平是借助一個適當?shù)霓D(zhuǎn)換器將天平梁的偏移轉(zhuǎn)換為可記錄的電訊號。238。2. 顯色劑用量：配位數(shù)與顯色劑用量有關(guān)；在形成逐級配合物，其用量更要嚴格控制。掃描探針顯微鏡：分辨率高，可獲得物體表面的三維形貌，完全得到的是樣品表面單層原子的形貌信息。成像信號可以是二次電子、背散射電子或吸收電子。由第一激發(fā)三重態(tài)的最低振動能級躍遷到基態(tài)的，約104～10s，所輻射躍遷而發(fā)出的光稱為磷光。使熒光強度降低的物質(zhì)稱為熒光猝滅劑；氧分子及產(chǎn)生重原子效應的溴化物、碘化物等都是常見的熒光猝滅劑？答： ？ 答：激發(fā)光源、樣品池、雙單色器系統(tǒng)、檢測器。1?分析原理：光源輻射出的待測元素的特征譜線通過樣品的蒸汽時被待測元素的基態(tài)原子所吸收，由發(fā)射譜線減弱的程度，進而求得樣品中待測元素的含量。（朗伯—比爾吸收定律）原子吸收光譜儀的四大組成部分和基本功能。離子源：、?電壓由直流分量和交流分量迭加而成，這樣在電極間形成一個對稱于z軸的電場分布。 解決問題的方法。v 2.寫作模板 I 對比觀點題型要求論述兩個對立的觀點并給出自己的看法(1)有一寫人認為……(2)另一些人認為……(3)我的看法…… v The topic of ① is being more and more popular recently. There are two sides of opinions about it. Some people say A is their favorite. They hold their view for the reason of② What is more，③ . Moreover④ ．v While others think that B is a better choice in the following three reason. Firstly，⑤___ Secondly， ⑥____ ， Finally，⑦______ From my point of view，I think⑧ ．The reason is that⑨ As a matter of fact ， there are some other reasons to explain my choice . For me，the former is surely a wise choice． 贊成一方v Model 1v Nowadays more and more people pay more attention to _____. Some people argue that ____ while others firmly hold that _____.v In my opinion, I think this question should be probed探索 in depth. On one hand, the first group is not totally correct because ____. On the other hand, the second group seems ____ because ____.v In a word, we can see clearly that the key lies in ____. Otherwise _____.通用v Model 3 Presently, one phenomenon calls for people’ s attention that ____. In general, ______. For one thing, _____. (For example, _____.) For another, _____. As far as I am concerned, _____. To sum up, _____.v 說明利弊題型v 這種題型往往要求先說明一下現(xiàn)狀，再對比事物本身的利弊，有時也會單從一個角度（利或弊）出發(fā)，最后往往要求考生表明自己的態(tài)度（或?qū)κ挛锴熬疤岢鲱A測）v v （或一方面）v （或前景）的看法v Nowadays, many people prefer ①__because it plays a significant role in our daily life . Generally, its advantages can be seen as follows. First ②__Besides ③__v But every coin has two sides. The negative aspects are also apparent. One of the important disadvantages is that ④__. To make matters worse, ⑤__.v Through the above analysis, I believe that the positive aspects overweigh the negative ones. Therefore, I would like to ⑥_. From the parison between these positive and negative effects of ⑦_, we should take it reasonably and do it according to the circumstances we are in. Only by this way, ⑧_(對前景的預測). v It is a new thing that_____. Many people wele this new development while others have expressed their concern about this.v Those who take sides against this new trend believe that _____ because_____. One mon argument, however, for ____ is that_____.Of the two views discussed above, I am in favor of the _____. My reason is that____. v When asked about ____, different people will offer different opinions. Some people take it for granted that 認為理所當然 _____. In their mind, ____. Besides, ______.v However, others hold that ____. They maintain that ____.v Weighting up these two arguments, I am for the first one. For one thing, ____. For another, _____. Therefore, as stated above, ____.v III 解決方法題型 v 要求考生列舉出解決問題的多種途徑?？梢允共煌琺/e；3??？答：熒光激發(fā)光譜：讓不同波長的激發(fā)光激發(fā)熒光物質(zhì)使之發(fā)生熒光，而讓熒光以固定的發(fā)射波長照射到檢測器上，然后以激發(fā)光波長為橫坐標，以熒光強度為縱坐標所繪制的圖，即為熒光激發(fā)光譜。 p*和n 174。由電子槍發(fā)射的能量為5～35keV的電子，以其交叉斑作為電子源，經(jīng)二級聚光鏡及物鏡的縮小形成具有一定能量、一定束流強度和束斑直徑的微細電子束，在掃描線圈驅(qū)動下，于試樣表面按一定時間、空間順序作柵網(wǎng)式掃描。 1. 掃描探針顯微鏡的工作原理。4. 顯色時間、溫度、放置時間等。 當濃度以mol/L表示時，稱 k 為摩爾吸光系數(shù)，以e 表示，即e 比 a 更常用。零位型天平在加熱過程中試樣無質(zhì)量變化時仍能保持初始平衡狀態(tài)，而有質(zhì)量變化時天平就失去平衡，并立即由傳感器檢測并輸出天平失衡信號，然后經(jīng)測重系統(tǒng)放大用以自動改