 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 5 | 1/1 | 返回列表 |
| 查看: 636 | 回復(fù): 3 | |||
| 本帖產(chǎn)生 1 個 翻譯EPI ，點擊這里進行查看 | |||
| 當(dāng)前只顯示滿足指定條件的回帖，點擊這里查看本話題的所有回帖 | |||
[求助]
急求~~化學(xué)方面，漢譯英。謝謝o(∩_∩)o
|
|||
| Cr(Ⅲ)的水解很復(fù)雜，其隨著溶液pH值的變化，會產(chǎn)生暫穩(wěn)態(tài)或亞穩(wěn)態(tài)的單核與多核聚合物。明膠是一種膠原蛋白多級的水解產(chǎn)生的肽分子聚合物質(zhì)，其分子結(jié)構(gòu)中一些側(cè)鏈基團可與一些金屬離子發(fā)生螯合作用，從而具備不同的作用。在本實驗中，選取鹽酸作為無氧酸的代表，硫酸作為有氧酸的代表，通過滴定法來研究Cr(Ⅲ)/明膠在不同酸性環(huán)境中與氫氧根絡(luò)合量，著重探究金屬離子與明膠的交聯(lián)作用。結(jié)果表明，在不同酸性條件下，Cr(Ⅲ)、明膠與羥基三者將不同程度的發(fā)生絡(luò)合作用。這除了受Cr(Ⅲ)的水解影響之外，估計還與酸中氧原子的是否存在有關(guān)。 |
回復(fù)此樓» 猜你喜歡
292求調(diào)劑
已經(jīng)有15人回復(fù)
-
304求調(diào)劑
已經(jīng)有5人回復(fù)
-
材料與化工考研調(diào)劑
已經(jīng)有17人回復(fù)
-
321求調(diào)劑
已經(jīng)有5人回復(fù)
-
329求調(diào)劑
已經(jīng)有5人回復(fù)
-
材料求調(diào)劑一志愿哈工大324
已經(jīng)有8人回復(fù)
-
286求調(diào)劑
已經(jīng)有7人回復(fù)
-
083000學(xué)碩274求調(diào)劑
已經(jīng)有7人回復(fù)
-
311求調(diào)劑
已經(jīng)有8人回復(fù)
-
一志愿C9材料與化工專業(yè)總分300求調(diào)劑
已經(jīng)有9人回復(fù)
【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ...
愛與雨下: 金幣+1 2013-05-16 22:09:29
柳旒: 金幣+66, 翻譯EPI+1, ★有幫助, 雖然晚了一天，但是還是灰常感謝。o(∩_∩)o 2013-05-17 23:37:10
愛與雨下: 金幣+1 2013-05-16 22:09:29
柳旒: 金幣+66, 翻譯EPI+1, ★有幫助, 雖然晚了一天，但是還是灰常感謝。o(∩_∩)o 2013-05-17 23:37:10
| The hydrolysis of Cr(Ⅲ) is very complicated, with the change of its solution pH value, triplet state or metastable mononucleated and multinucleated polymers will be produced. Gelatin is a kind of peptide macromolecule obtained from the multiple levels of hydrolysis of collagen. Chelation can be taken between some side chains in gelatin molecular structure and some metal ions, and have different effects. In this experiment, we selected hydrochloric acid as representative of hydracide and sulfuric acid as representative of oxyacid. The amount of complexation between Cr(Ⅲ)/gelatin and hydroxyl in different acidic conditions was studied by titrimetric method, focused on the crosslinking of metal ions and gelatin. Results show that under the condition of different acidic, Cr (Ⅲ)、gelatin and hydroxyl all three will be complexation to different extents. Not only was it affected by the hydrolysis of the Cr(Ⅲ), but also it estimated that was related to the existence of oxygen in acid. |
4樓2013-05-13 12:36:25
MisterZhou
銅蟲 (小有名氣)
- 應(yīng)助: 0 (幼兒園)
- 金幣: 486.5
- 帖子: 54
- 在線: 7.8小時
- 蟲號: 2436551
- 注冊: 2013-04-25
- 性別: GG
- 專業(yè): 其他無機非金屬材料
2樓2013-05-10 22:35:20
我們學(xué)校的數(shù)字資源最近用不起，
我只是想翻譯一下。。。。 3樓2013-05-10 23:15:45
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[材料工程] 一志愿C9材料與化工專業(yè)總分300求調(diào)劑 +8 | 曼111 2026-03-24 | 9/450 |
|
|---|---|---|---|---|
|
[考研] 291求調(diào)劑 +13 | hhhhxn.. 2026-03-23 | 19/950 |
|
|
|
[考研] 0856，材料與化工321分求調(diào)劑 +8 | 大饞小子 2026-03-27 | 9/450 |
|
|
|
[有機交流]
高溫高壓反應(yīng)求助
 10+4
|
chibby 2026-03-25 | 4/200 |
|
|
|
[考研] 一志愿211院校 344分 東北農(nóng)業(yè)大學(xué)生物學(xué)學(xué)碩，求調(diào)劑 +5 | 丶風(fēng)雪夜歸人丶 2026-03-26 | 8/400 |
|
|
|
[考研] 085600材料與化工306 +10 | z1z2z3879 2026-03-21 | 11/550 |
|
|
|
[考研] 材料求調(diào)劑 +5 | .m.. 2026-03-25 | 5/250 |
|
|
|
[考研] 324求調(diào)劑 +8 | hanamiko 2026-03-26 | 10/500 |
|
|
|
[考研] 341求調(diào)劑 +7 | 青檸檬1 2026-03-26 | 7/350 |
|
|
|
[考研] 324求調(diào)劑 +4 | wysyjs25 2026-03-21 | 4/200 |
|
|
|
[考研] 【雙一流院校新能源、環(huán)境材料，材料加工與模擬招收大量調(diào)劑】 +4 | Higraduate 2026-03-22 | 8/400 |
|
|
|
[考研] 求調(diào)劑 +8 | Auroracx 2026-03-22 | 8/400 |
|
|
|
[考研] 340求調(diào)劑 +3 | Amber00 2026-03-26 | 3/150 |
|
|
|
[考研] 081700 調(diào)劑 267分 +11 | 迷人的哈哈 2026-03-23 | 11/550 |
|
|
|
[考研] 材料277求調(diào)劑 +5 | min3 2026-03-24 | 5/250 |
|
|
|
[考研] 一志愿 南京郵電大學(xué) 288分 材料考研 求調(diào)劑 +3 | jl0720 2026-03-26 | 3/150 |
|
|
|
[考研] 一志愿上海交大生物與醫(yī)藥專碩324分，求調(diào)劑 +6 | jiajunX 2026-03-22 | 6/300 |
|
|
|
[考研] 318求調(diào)劑 +3 | plum李子 2026-03-23 | 3/150 |
|
|
|
[考研] 0703化學(xué)調(diào)劑，求導(dǎo)師收 +7 | 天天好運來上岸?/a> 2026-03-24 | 7/350 |
|
|
|
[考研] 材料專碩331求調(diào)劑 +4 | 鮮當(dāng)牛 2026-03-24 | 4/200 |
|