Dionex CRD碳酸鹽去除裝置

Thermo Scientific的戴安™酸鹽去除裝置（C做黃RD 180，200和300）從抑制洗脫液流通過(guò)擴散通過(guò)碳數校酸酯的選擇性透氣膜的壁除去二氧化碳。與碳酸洗脫液系畫姐統的戴安CRD 300降低了背景信号，以幾乎相他機同的水平作爲氫氧化物洗脫液。抑制器後(hòu)鉛垂，二氧化碳訊訊傳輸是由堿性溶液的逆流輔助。

戴安CRD 180和200用于從氫氧化物洗脫液系統中除去碳酸優呢場化
盡量減少使用戴安CRD 180或200可以提高量化碳酸鹽
戴安CRD 180的減小的膜長(銀雜cháng)度爲根據4微米樹脂柱優化
戴安CRD 300的增加的膜長(cháng)度爲碳酸鹽淋洗液系統體姐進(jìn)行了優化
減少與戴安CRD 300結果基線爲碳酸鹽淋洗液系統更高的靈敏度科飛
與一戴安CRD 300碳酸背景消除增加了線性答機範圍

Dionex CRD碳酸鹽去除裝置

訂貨信息：

Reduces Carbonate for Impr件去oved Sensitivity

The Thermo Scientific^™ Dionex^™ Carbonate Remov現筆al Device (CRD 180, 200 and 300) rem紅土ove carbon dioxide fro舊書m the suppressed eluent stre你她am by diffusion through the 唱子walls of a carbonate selective gas 房區permeable membrane. With car從時bonate eluent systems the Dionex CRD 3了腦00 reduces the background 子很signal to nearly the same levels as藍鄉 that of hydroxide el離做uents. Plumbed after the suppressor, t中報he carbon dioxide transfe和長r is aided by a countercurrent flow 笑白of basic solution.

• The Dionex CRD 180 and 2裡個00 are optimized for the 門近removal of carbonate from hydr術吧oxide eluent systems

• Minimizing carbonate usin影雨g the Dionex CRD 180 or 200 ca南山n improve quantification

• The reduced membrane length 朋制of the Dionex CRD 體道180 is optimized for c樂錯olumns based on 身雜4 μm resins

• The increased membrane length of黑少 the Dionex CRD 300 i下答s optimized for carbonate eluen樂相t systems

• Reducing the baseline with a Dionex CRD弟玩 300 results in higher sensitivity fo理兒r carbonate eluent systems

• Elimination of the carb城是onic acid background wi算喝th a Dionex CRD 300 increases the line美長arity range

Dionex CRD 200 Carbonate R讀空emoval Device

Exposure to carbon d文劇ioxide can cause samples to become cont會河aminated with carbonate. High level人裡s of carbonate originating from d影書issolved carbon dioxi著微de can interfer北黑e with the accurate determination 報會of analytes of interest, s河愛uch as sulfate and nitri吧頻te. The Dionex CRD 200 is a devic厭西e used to remove th好老e carbonate peak contributed 好可by the sample.

The Dionex CRD 200 can be installed ea弟遠sily in any Therm吃師o Scientific Dionex IC system 我兵equipped with an eluent gen道玩erator, Thermo 畫喝Scientific Dione就但x CR-ATC Continuously Regenerated 門劇Anion Trap Column, and Thermo化討 Scientific^™ Dionex^™ AERS^™ 500 Anion Electrolytically Rege她姐nerated Suppressor or Th資東ermo Scientific^™ Dionex^™ ACES^™ 300 Anion Capillary Elect拿綠rolytic Suppressor, and re影門quires no reagents or soft見不ware control. The Dionex CRD 200廠員 is a low-dispe市訊rsion devices designed specificall中間y for use with 遠弟hydroxide- and borat兒了e-based chemistries using Ther近計mo Scientific Dionex columns.

The Dionex CRD 200 is ava關一ilable in three formats. The Dio日低nex CRD 200 (4 mm) 線海supports carbonate removal fr也房om standard bore 黃哥systems, while the Dionex CRD 200 (2 mm視輛) supports carbonate rem件黃oval from microbore systems; the Dion多遠ex CRD 200 (0.4 資地mm) supports carbon間不ate removal from capillary-scale sys能短tems at flow rates of 5 – 30 微笑μL/min.

A significant amount of carbonat醫謝e is removed using the Dionex CRD 200 制器Carbonate Removal Device.

Dionex CRD 300 Carb坐學onate Removal Device

Carbonate eluents are suppressed to 務這relatively low-conduc子謝tivity carbonate acid, but 城知the residual conductivity of th少暗e carbonic acid has several undesirable媽哥 effects. Carbonic acid can mask 家吧small peaks, decreasing the 頻藍limit of detection (LOD) 用低during trace analyses腦好. In a background of carbonic acid, 山亮the linear range of most species is 子化limited, and the residual backgrou飛很nd conductivity creates a large voi相放d dip which can hamper t喝文he integration of early elu裡她ting species. The 線人CRD 300 is a device u黃動sed to remove the ca腦黑rbonic acid from the suppressed elu頻銀ent, providing hydr自嗎oxide-like detection to s間綠ystems using carbonate elue分時nts.

The Dionex CRD 300 c紅照an be installed easily in any Dionex I能雪C system running c火術arbonate as an eluent with a Dionex A媽理ERS 500 suppresso玩術r. The Dionex CRD 300 require會畫s either a constant flow of bas嗎白ic solution from a peristaltic pump or身快 evacuation by a vacuum pump. 些聽The Dionex CRD 300 is designed specifi站化cally for use w光車ith carbonate eluent based chemistri作計es using Dionex col關少umns.

The Dionex CRD 300 is a志南vailable in two formats. The離可 Dionex CRD 300 (4 mm) supports carbo玩雨nate removal fro動公m standard bore sys房討tems, while the Dione書農x CRD 300 (2 mm) suppo通的rts carbonate remova看劇l from microbore systems.

Background signal is reduced u我為sing the Dionex CRD 300 Carbona人窗te Removal Device.

Dionex CRD 180 Carbonate Remov鄉城al Device

The Dionex CRD 180 is a version of t資作he Dionex CRD 200 that子短 has reduced internal volume. This faci店舞litates operation in conjuncti影亮on with 4 μm resin packed capilla術很ry columns without unaccep有雪table loss of peak區東 efficiency. However the Dione服吧x CRD 180 has less capacity for坐朋 the removal of carbonate than 從拍the Dionex CRD 200, and is th科市erefore not recommended for use wi南錢th columns packed with愛店 resin larger than 4 μm.開關

The Dionex CRD 180 can be insta信民lled easily in a Dionex Capillar明算y IC system equipped with an elu你下ent generator, Dionex CR-月秒ATC Continuously Regenerated 務西Anion Trap Colu看自mn, and Dionex ACES 300 水城suppressor. The Dionex CRD 180 req志木uires no reagents or廠懂 software control. The訊有 Dionex CRD 180 is an 海高ultra-low-dispers兵開ion device designed specif白拿ically for use wit白農h hydroxide-based ch音美emistries using Dionex columns.

The Dionex CRD 180 問相is only available in 身動capillary (0.4 mm) format for use with 討多0.25 mm and 0.4 mm capillary columns一坐. Microbore and standard-bo林農re systems using 4 μm re她用sin packed columns樹湖 should use the Dionex CRD 外來200.