參考價	面議

產(chǎn)品簡介

苯基固定相通過π-π作用力提高了與平面芳香族化合物的相互作用

詳細介紹

XSelect CSH苯已基柱比起傳統(tǒng)的反相柱提供另一種選擇性，是方法開發(fā)中一種很有價值的工具，如低pH條件下。

XSelect CSH苯基固定相通過π-π作用力提高了與平面芳香族化合物的相互作用。與氟苯基色譜柱相比，相比與那些次級的Lewis堿相互作用力而言XSelect CSH苯基色譜柱更多強調(diào)反相作用。

XSelect CSH色譜柱的可擴展性和通用性使其可用作分離和純化科學家的有力的方法開發(fā)工具。用于合成CSH固定相的雜化顆粒材質(zhì)作為現(xiàn)有最耐壓力的色譜柱而為業(yè)界所熟知。耐用性與OBD填裝技術的結合產(chǎn)生了在寬運行條件下具有優(yōu)異壽命的色譜柱。色譜柱設計固有的可擴展性使得純化科學家能夠選擇從更大到更小和更窄的制備型色譜柱，降低溶劑消耗和餾分體積。

Simultaneous determination of twelve sweeteners and nine preservatives in foods by solid-phase extraction and LC-MS/MS

A rapid and simple method for the simultaneous determination of twelve sweeteners and nine preservatives in various foods by liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed. The sweeteners and preservatives were extracted from solid samples with 80% and 50% methanol and from liquid samples with 80% methanol, followed by Oasis WAX cartridge cleanup. The LC separation was performed on a XSelect CSH Phenyl-Hexyl column (5 μm, 2.1 mm ×150 mm) with a phase of 10 mmol/L acetate buffer (pH 4.0)-acetonitrile and MS detection with negative ion electrospray ionization. The quantification limits of acesulfame K (AK), alitame (AL), aspartame (ASP), cyclamic acid (CYC), neotame (NEO), saccharin Na (SAC), p-hydroxybenzoic acid methyl (PHBA-Me), p-hydroxybenzoic acid ethyl (PHBA-Et), p-hydroxybenzoic acid isopropyl (PHBA-iPr), p-hydroxybenzoic acid propyl (PHBA-Pr), p-hydroxybenzoic acid isobutyl (PHBA-iBu) and p-hydroxybenzoic acid butyl (PHBA-Bu) were 0.001 g/kg, those of dulcin (DU), glycyrrhizic acid (GLY), neohesperidin dihydrochalcone (NHDC), rebaudioside A (REB), stevioside (STV), sucralose (SUC) and benzoic acid (BA) were 0.005 g/kg, and those of sorbic acid (SOA) and dehydroacetic acid (DHA) were 0.02 g/kg. The mean recoveries from ten kinds of foods fortified at the levels of 0.02 and 0.2 g/kg were 70.9-119.0%, and their relative standard deviations were 0.1-11.7%.

品名	編號
XSelect CSH Phenyl-Hexyl OBD Prep Column, 130?, 5 µm, 10 mm X 250 mm, 1/pkg	186008247
XSelect CSH Phenyl-Hexyl Column, 130?, 3.5 µm, 3 mm X 75 mm, 1/pkg	186005648
XSelect CSH Phenyl-Hexyl Column, 130?, 3.5 µm, 3 mm X 50 mm, 1/pkg	186005371
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 3 mm X 150 mm, 1/pkg	186005392
XSelect CSH Phenyl-Hexyl Column, 130?, 3.5 µm, 4.6 mm X 150 mm, 1/pkg	186005380
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 3 mm X 30 mm, 1/pkg	186005389
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 4.6 mm X 20 mm, 1/pkg	186005394
XSelect CSH Phenyl-Hexyl Column, 130?, 3.5 µm, 3 mm X 150 mm, 1/pkg	186005373
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 3 mm X 50 mm, 1/pkg	186005390
XSelect CSH Phenyl-Hexyl Column, 130?, 3.5 µm, 3 mm X 100 mm, 1/pkg	186005372
XSelect CSH Phenyl-Hexyl Column, 130?, 3.5 µm, 4.6 mm X 50 mm, 1/pkg	186005377
XSelect CSH Phenyl-Hexyl Column, 130?, 3.5 µm, 4.6 mm X 75 mm, 1/pkg	186005378
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 4.6 mm X 50 mm, 1/pkg	186005397
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 3 mm X 100 mm, 1/pkg	186005391
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 4.6 mm X 30 mm, 1/pkg	186005396
XSelect CSH Phenyl-Hexyl Column, 130?, 3.5 µm, 4.6 mm X 30 mm, 1/pkg	186005376
XSelect CSH Phenyl-Hexyl Column, 130?, 3.5 µm, 4.6 mm X 100 mm, 1/pkg	186005379
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 4.6 mm X 75 mm, 1/pkg	186005398
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 4.6 mm X 100 mm, 1/pkg	186005399
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 4.6 mm X 150 mm, 1/pkg	186005400
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 4.6 mm X 250 mm, 1/pkg	186005401
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 3 mm X 100 mm, 3/pkg	176002617
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 3 mm X 50 mm, 1/pkg	186006129
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 4.6 mm X 100 mm, 1/pkg	186006135
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 3 mm X 150 mm, 3/pkg	176002896
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 3 mm X 50 mm, 3/pkg	176002615
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 3 mm X 30 mm, 1/pkg	186006128
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 3 mm X 100 mm, 1/pkg	186006131
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 3 mm X 150 mm, 1/pkg	186006734
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 4.6 mm X 75 mm, 1/pkg	186006134
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 3 mm X 75 mm, 1/pkg	186006130
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 4.6 mm X 30 mm, 1/pkg	186006132
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 4.6 mm X 50 mm, 1/pkg	186006133
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 3 mm X 75 mm, 3/pkg	176002616
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 2.1 mm X 30 mm, 1/pkg	186006124
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 2.1 mm X 75 mm, 1/pkg	186006126
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 2.1 mm X 50 mm, 1/pkg	186006125
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 2.1 mm X 30 mm, 3/pkg	176002610
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 2.1 mm X 50 mm, 3/pkg	176002611
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 2.1 mm X 100 mm, 3/pkg	176002613
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 3 mm X 30 mm, 3/pkg	176002614
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 2.1 mm X 150 mm, 3/pkg	176002895
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 2.1 mm X 100 mm, 1/pkg	186006127
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 2.1 mm X 150 mm, 1/pkg	186006733
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 2.1 mm X 75 mm, 3/pkg	176002612
XSelect CSH Phenyl-Hexyl Column, 130?, 3.5 µm, 2.1 mm X 50 mm, 1/pkg	186005365
XSelect CSH Phenyl-Hexyl Column, 130?, 3.5 µm, 2.1 mm X 100 mm, 1/pkg	186005366
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 2.1 mm X 30 mm, 1/pkg	186005383
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 2.1 mm X 150 mm, 1/pkg	186005386
XSelect CSH Phenyl-Hexyl Column, 130?, 3.5 µm, 2.1 mm X 20 mm, 1/pkg	186005363
XSelect CSH Phenyl-Hexyl Column, 130?, 3.5 µm, 2.1 mm X 150 mm, 1/pkg	186005367
XSelect CSH Phenyl-Hexyl Column, 130?, 3.5 µm, 2.1 mm X 30 mm, 1/pkg	186005364
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 2.1 mm X 50 mm, 1/pkg	186005384
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 2.1 mm X 100 mm, 1/pkg	186005385
XSelect CSH Phenyl-Hexyl Column, 130?, 3.5 µm, 2.1 mm X 75 mm, 1/pkg	186005645
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 2.1 mm X 20 mm, 1/pkg	186005382
XSelect CSH Phenyl-Hexyl Column, 130?, 5 µm, 3 mm X 250 mm, 1/pkg	186005393
XSelect CSH Phenyl-Hexyl Method Validation Kit, 130?, 2.5 µm, 3 mm X 100 mm, 3/pkg	186006248
XSelect CSH Phenyl-Hexyl Method Validation Kit, 130?, 2.5 µm, 4.6 mm X 50 mm, 3/pkg	186006250
XSelect CSH Phenyl-Hexyl XP Column, 130?, 2.5 µm, 4.6 mm X 150 mm, 1/pkg	186006735
XSelect CSH Phenyl-Hexyl Method Validation Kit, 130?, 2.5 µm, 4.6 mm X 150 mm, 3/pkg	186006793
XSelect CSH Phenyl-Hexyl Method Validation Kit, 130?, 2.5 µm, 3 mm X 150 mm, 3/pkg	186006792
XSelect CSH Phenyl-Hexyl Method Validation Kit, XP Column, 130?, 2.5 µm, 3 mm X 50 mm, 3/pkg	186006247
XSelect CSH Phenyl-Hexyl OBD Prep Column, 130?, 5 µm, 19 mm X 50 mm, 1/pkg	186005446
XSelect CSH Phenyl-Hexyl OBD Prep Column, 130?, 5 µm, 50 mm X 50 mm, 1/pkg	186005508
XSelect CSH Phenyl-Hexyl OBD Prep Column, 130?, 5 µm, 50 mm X 250 mm, 1/pkg	186005511
XSelect CSH Phenyl-Hexyl OBD Prep Column, 130?, 5 µm, 19 mm X 250 mm, 1/pkg	186005506
XSelect CSH Phenyl-Hexyl OBD Prep Column, 130?, 5 µm, 19 mm X 150 mm, 1/pkg	186005448
XSelect CSH Phenyl-Hexyl OBD Prep Column, 130?, 5 µm, 50 mm X 150 mm, 1/pkg	186005510
XSelect CSH Phenyl-Hexyl OBD Prep Column, 130?, 5 µm, 30 mm X 150 mm, 1/pkg	186005452
XSelect CSH Phenyl-Hexyl OBD Prep Column, 130?, 5 µm, 30 mm X 250 mm, 1/pkg	186005507
XSelect CSH Phenyl-Hexyl OBD Prep Column, 130?, 5 µm, 50 mm X 100 mm, 1/pkg	186005509