• <small id="neqwq"><tbody id="neqwq"></tbody></small>

    1. <small id="neqwq"></small>

          1. <source id="neqwq"></source>

            1. <td id="neqwq"><ins id="neqwq"><label id="neqwq"></label></ins></td>

              亚洲av伊久精品综合在线_国产精品毛片久久久久久久_精品国产青草久久久久96_99精品国产一区二区_来一水AV@lysav

              全國統(tǒng)一熱線:400-827-5257
              產(chǎn)品中心您的位置:網(wǎng)站首頁 > 產(chǎn)品中心 > 氣相色譜柱 > SUPELCO氣相色譜柱 > Astec CHIRALDEX G-DASUPELCO 手性氣相色譜柱 毛細管柱
              SUPELCO 手性氣相色譜柱 毛細管柱

              Astec CHIRALDEX G-DASUPELCO 手性氣相色譜柱 毛細管柱

              簡要描述:

              Astec CHIRALDEX G-DA SUPELCO 手性氣相色譜柱 毛細管柱
              Supelco(色譜科)位于美國賓夕法尼亞州,是Sigma-Aldrich集團下屬的子品牌,Supelco一直通過提供更新的,更可靠的色譜產(chǎn)品和來幫助色譜工作者來解決問題,其涉及的領(lǐng)域和行業(yè)有環(huán)境、食品、飲料、政府、醫(yī)藥、化工等

              打印當(dāng)前頁

              免費咨詢:86-021-60545257,400-827-5257

              發(fā)郵件給我們:elab17@163.com

              分享到:

              Astec CHIRALDEX G-DA SUPELCO 手性氣相色譜柱 毛細管柱
               

              • CD Type: γ (gamma)
              • Derivative: Dialkyl
              • Temp. Limits: -10 °C to 200 °C (isothermal) or 220 °C (programmed)

                  Incorporates a phase consisting of a 2,6-di-O-pentyl-3-methoxy derivative of γ-cyclodextrin. This phase is good for separations of heterocyclic amines. It has different selectivity from other phases and often shows reversal in elution from the PH phases.

                  The dipentylated derivatives of alpha, beta and gamma cyclodextrin show pronounced selectivity differences based on the size, shape and functionality of the analyte. Strong evidence exists for inclusion complexation which is the basic driving mechanism and, therefore, resolution is affected by sample load. The beta-cyclodextrin form has the broadest applicability. Sample volumes under 1 microliter at concentrations of 5 mg/mL are typical with the 100/1 split ratio.

              Features: 

              • Hydrophobic surfacePronounced selectivity
              • differences based on analyte size, shape and functionality
              • Separates heterocyclic amines
              • Different selectivity from other cyclodextrin derivatives
              • Often shows reversal in elution order from PH series

              Selectivity priorities:

              • Alpha…Simple epoxides, cyclic ethers, linear substituted alkanes
              • Beta…Heterocyclic amines
              • Gamma…Naphthyl analogs

              Mechanism Observations:

                  Stronger inclusion for DA and, therefore, size selectivity is important. Critical temperature dependence for enantioselectivity. Above this temperature no separation occurs.

               

              Astec CHIRALDEX G-DA SUPELCO 手性氣相色譜柱 毛細管柱

              訂貨信息:

              Product #Description
              72033ASTAstec? CHIRALDEX? G-DA 毛細管氣相色譜柱 L × I.D. 30m × 0.25 mm, df 0.12 μm

               

              Astec CHIRALDEX G-DA

              訂購:

              上海屹利科學(xué)儀器有限公司  www.elab17。。cn   

              上海屹利科學(xué)儀器有限公司(杭州辦)   

              上海屹利科學(xué)儀器有限公司m.52frj.com 熱門推薦:液相色譜 氣相色譜 色譜柱 分光光度計 電子天平 離心機 旋轉(zhuǎn)蒸發(fā)儀 酸度計 離子計 等實驗室儀器
              公司地址:上海市松江區(qū)沈磚公路5555弄9號樓409室     網(wǎng)站地圖    滬ICP備14028064號-1    公司首頁 關(guān)于我們 新聞中心 產(chǎn)品中心 聯(lián)系我們

              地址:上海市松江區(qū)沈磚公路5555弄9號樓409室
              亚洲av伊久精品综合在线_国产精品毛片久久久久久久_精品国产青草久久久久96_99精品国产一区二区_来一水AV@lysav
            2. <small id="neqwq"><tbody id="neqwq"></tbody></small>

              1. <small id="neqwq"></small>

                    1. <source id="neqwq"></source>

                      1. <td id="neqwq"><ins id="neqwq"><label id="neqwq"></label></ins></td>
                        宁海县| 高唐县| 临沂市| 永城市| 乐平市| 仁怀市| 泸定县| 淳化县| 阆中市| 西充县| 浦东新区| 保康县| 砚山县| 北安市| 梁河县| 思南县| 三原县| 江华| 都安| 盐山县| 祥云县| 永安市| 黎城县| 介休市| 措勤县| 湘潭市| 定襄县| 琼海市| 博兴县| 犍为县| 林周县| 简阳市| 琼结县| 铁岭市| 平陆县| 高淳县| 鱼台县| 大埔县| 紫金县| 安国市| 台前县|