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XSelect CSH Fluoro Phenyl Column

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氟苯基柱；方法開發(fā)，對(duì)位置異構(gòu)體、鹵代化合物和極性化合物具有優(yōu)異選擇性，保留酸性化合物。

詳細(xì)介紹

為了提高選擇性，XSelectCSH 氟苯基柱提供了的方法開發(fā)自由度，特別是在流動(dòng)相低pH值下，不封端的吸附劑能加強(qiáng)酸性化合物的保留性。CSH氟苯基色譜柱對(duì)位置異構(gòu)體、鹵代化合物和極性化合物具有優(yōu)異選擇性。部分原因在于多種保留機(jī)理的綜合效果，包括偶極-偶極作用、氫鍵作用、芳香性(π-π)作用和疏水作用。但由于帶電表面顆粒[CSH]的化學(xué)特性，與傳統(tǒng)PFP鍵合固定相相比，CSH氟苯基色譜柱可增強(qiáng)對(duì)酸性化合物的保留。


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(hào)

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 3 mm X 75 mm, 1/pkg

186005649

XSelect CSH Fluoro Phenyl Column, 130?, 5 µm, 2.1 mm X 30 mm, 1/pkg

186005328

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 2.1 mm X 75 mm, 1/pkg

186005646

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 4.6 mm X 150 mm, 1/pkg

186005325

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 4.6 mm X 75 mm, 1/pkg

186005323

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 1 mm X 50 mm, 1/pkg

186005304

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 4.6 mm X 100 mm, 1/pkg

186005324

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 1 mm X 100 mm, 1/pkg

186005305

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 4.6 mm X 30 mm, 1/pkg

186005321

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 4.6 mm X 50 mm, 1/pkg

186005322

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 2.1 mm X 20 mm, 1/pkg

186005308

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 4.6 mm X 20 mm, 1/pkg

186005320

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 2.1 mm X 30 mm, 1/pkg

186005309

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 2.1 mm X 150 mm, 1/pkg

186005312

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 2.1 mm X 100 mm, 1/pkg

186005311

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 2.1 mm X 50 mm, 1/pkg

186005310

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 3 mm X 50 mm, 1/pkg

186005316

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 3 mm X 100 mm, 1/pkg

186005317

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 3 mm X 20 mm, 1/pkg

186005314

XSelect CSH Fluoro Phenyl Column, 130?, 5 µm, 2.1 mm X 100 mm, 1/pkg

186005330

XSelect CSH Fluoro Phenyl Column, 130?, 3.5 µm, 3 mm X 150 mm, 1/pkg

186005318

XSelect CSH Fluoro Phenyl Column, 130?, 5 µm, 2.1 mm X 150 mm, 1/pkg

186005331

XSelect CSH Fluoro Phenyl Column, 130?, 5 µm, 3 mm X 150 mm, 1/pkg

186005337

XSelect CSH Fluoro Phenyl Method Validation Kit, 130?, 2.5 µm, 2.1 mm X 150 mm, 3/pkg

186006788

XSelect CSH Fluoro Phenyl Column, 130?, 5 µm, 3 mm X 100 mm, 1/pkg

186005336

XSelect CSH Fluoro Phenyl Column, 130?, 5 µm, 3 mm X 50 mm, 1/pkg

186005335

XSelect CSH Fluoro Phenyl Method Validation Kit, 130?, 5 µm, 2.1 mm X 150 mm, 3/pkg

186005554

XSelect CSH Fluoro Phenyl Method Validation Kit, 130?, 3.5 µm, 4.6 mm X 150 mm, 3/pkg

186005553

XSelect CSH Fluoro Phenyl Method Validation Kit, 130?, 3.5 µm, 4.6 mm X 100 mm, 3/pkg

186005552


關(guān)鍵詞：吸附劑 色譜柱
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