英语高手进,机器翻译的别来,化工专业类翻译

kuaidi.ping-jia.net  作者:佚名   更新日期:2024-07-10
谁能翻译下化工专业的英语啊?不要机器翻译的。。。。急用。。。谢谢谢。。

在有机化合物存在的情况下,测定过氧化氢的电位滴定
M. P. Gimeno,* M. C. Mayoral 和 J. M. Andres´

本文描述和讨论了在有机化合物存在的情况下,一种用于定量分析过氧化氢的新方法。该方法基于在氢钠亚硫酸盐存在时,过氧化氢的电位滴定。该方法已成功应用于过氧化氢氧化甘油的过程中,剩余过氧化物含量的检测和量化。该方法已经过检测:被覆盖的线性范围在17.750至0.079毫米之间。研究表明低范围(0.234 -0.079毫米)的标准偏差是0.001毫米,且该方法的最低检测限是0.02毫米。酸性过氧化氢溶液显示其对改良后的方法没有影响,且足以防止过氧化氢的分解,然而中性或碱性条件下会造成过氧化氢的部分分解。本文同时对计量的准确度、精确度、相对误差、测量值的可再现性进行了探讨。

  About the mid-fifth century, three Germanic tribes: Angles (Angles), Saxon (Saxons) and the Jutes (Juries) invaded Britain. Historically known as the Anglo-Saxon conquest (the Anglo-Saxon conquest). These invaders brought their own dialects, with the gradual integration of these dialects, as Old English (Old English). To the sixth century the British original inhabitants --- Celtics (Celts) or kill, or drive into the mountains, or reduced to slavery. Invaders became a British master, Old English or Anglo Saxon said (Anglo-Saxon) language of the UK, only in some of the Celtic place names in the United Kingdom, into the English language very few Celtic words. Therefore, we can say, with the Anglo-Saxon conquest of Britain, really the birth of the English language.
  Old English period there were four main dialects: ① dialect of Northern Calabria - - Hung
  Po River north of the dialect; ② dialect --- Mel ranges from Hongbo West River and the River Thames in central England between the dialects; ③ living in Kent, southeast England dialect --- Jutes dialect region; ④ --- West Saxon dialect of the south of the River Thames. Northumbria and West Asia, the two dialects and Mel together Anglia (Anglian) dialect, that is, areas inhabited by the Anglo dialects, the early Old English dialect of Northumbria literature is created.

The small particles of Amberlite XAD-2 resin were prepared as follows; the commercially obtained resin (20-50mesh) was ground and the particles between 100and 200 mesh were collected by sieving and repeated decantation. The resin was washed in succession with 1N NaOH, water, 1N HCl, ethanol (2 times), ether, petroleum ether, ethanol and water. 【Finally the resin was equilibrated by washing several times with 0.5% NaCl in 50% methanol (solvent A) and packed into the column up to a height of 16 cm (1.8×20 cm, glass column with a jacket).】 The column was connected to the Beckman Model-130 Spectrochrom Analyzer and warm water (30°) was circulated in the jacket. 【The two reservoirs connected to the gradient pump of the Spectrochrom Analyzer were filled, one with solvent A, the other with 3/500 N HCl in 50% methanol (solvent B).】 The solvent A was pumped into the column at a flow rate of 60 ml/hr to complete equilibration. The sample of enduracidin (5-50 mg) was dissolved in 1—2 ml of solvent A and placed on the top of the column in the usual way, and then elution was started using the linear gradient cam and gear for 1 liter in total volume. After the measurement of the UV absorbance at 233, 253, and 272 nm, conductivity and pH of the eluate, it was fractionated every 10 min by a fraction collector at 2—5°.

小颗粒Amberlite XAD - 2树脂编写了如下的商业获得树脂( 20 - 50mesh )的地面和粒子之间100and 200目收集筛选和反复decantation 。树脂是洗继承1N的氢氧化钠,水, 1N的盐酸,乙醇( 2次) ,乙醚,石油醚,乙醇和水。 【最后的树脂是平衡的洗涤几次0.5 %氯化钠50 %甲醇(溶剂)和装入柱高达高度16厘米( 1.8 × 20厘米,玻璃柱,一件夹克) 。 】栏被连接到贝克曼模型- 130 Spectrochrom分析仪和温水( 30 ° )散发的外套。 【这两个水库连接到梯度泵的Spectrochrom分析仪填补了之一溶剂A的其他与五百分之三ñ HCl在50 %甲醇(溶剂乙) 。 】溶剂A是注入柱,流速率60毫升/小时,完成平衡。抽样enduracidin ( 5-50毫克)是溶解于1-2毫升的溶剂和放置在上方的一栏通常的方式,然后洗脱是开始使用线性梯度凸轮和齿轮的1升的总音量。经过测量紫外吸收光谱在233 , 253和272纳米,电导率和pH值的洗脱液,这是每分10分钟的一小部分收藏家在2-5 ° 。

小颗粒Amberlite XAD - 2树脂编写了如下的商业获得树脂( 20 - 50mesh )的地面和粒子之间100and 200目收集筛选和反复decantation 。树脂是洗继承1N的氢氧化钠,水, 1N的盐酸,乙醇( 2次) ,乙醚,石油醚,乙醇和水。 【最后的树脂是平衡的洗涤几次0.5 %氯化钠50 %甲醇(溶剂)和装入柱高达高度16厘米( 1.8 × 20厘米,玻璃柱,一件夹克) 。 】栏被连接到贝克曼模型- 130 Spectrochrom分析仪和温水( 30 ° )散发的外套。 【这两个水库连接到梯度泵的Spectrochrom分析仪填补了之一溶剂A的其他与五百分之三ñ HCl在50 %甲醇(溶剂乙) 。 】溶剂A是注入柱,流速率60毫升/小时,完成平衡。抽样enduracidin ( 5-50毫克)是溶解于1-2毫升的溶剂和放置在上方的一栏通常的方式,然后洗脱是开始使用线性梯度凸轮和齿轮的1升的总音量。经过测量紫外吸收光谱在233 , 253和272纳米,电导率和pH值的洗脱液,这是每分10分钟的一小部分收藏家在2-5 ° 。

XAD-2大孔吸附树脂的制备方法如下 :工业上将20-50目的树脂磨碎,筛选出100-200目的树脂颗粒,然后进行反复装柱。树脂分别用1mol/l氢氧化钠,水1mol/l盐酸,两倍体积的乙醇,二乙醚,石油醚以及水进行洗脱,【最后用含0.5%氯化钠的50%甲醇反复清洗后平衡。接着进行装柱,柱床高约16cm(玻璃柱,规格1.8*20cm)】,柱子连接一台贝克曼公司的130型色谱仪 ~~
【在色谱仪的梯度装置上连接有两个装满洗脱液的贮液器,一瓶装的是溶液A,另一个是含3/500 mol/l的50%甲醇(溶液B)】~~~

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