high performance liquid chromatographic separation

... acetic acid eluates Inject 20 ~L into the liquid chromatograph HIGH PERFORMANCE LIQUID CHROMATOGRAPHIC ANALYSIS OF URINARY CATECHOLAMINES TABLE TABLE CHROMATOGRAPHICCONDITIONS 287 BETWEEN-DAY ... 1.0083 38.0 37.0 61.6 53.0 4714 0.5918 0.8571 0.8867 Mean 0.7517 51.5 47.0 52.0 46.5 HIGH PERFORMANCE LIQUID CHROMATOGRAPHIC ANALYSIS OF URINARY CATECHOLAMINES : 80- ~ 70 Z • 34.35 + EPINEPHRINE= ... compounds Higher potentials increase baseline noise and decrease the specifity of the analysis Column Temperature There was no need to employ elevated t e m p e r a t u r e s as excellent chromatographic...

Ngày tải lên: 16/12/2012, 15:24

... : 50 (v/v/v) High performance liquid chromatography Protein separation by HPLC was performed using a reversed phase Vydac Protein C-4 column (250 · 4.6 mm internal diameter, The Separation Group, ... 14 Zolla, L & Bianchetti, M (2001) High- performance liquid chromatography coupled on-line with electrospray ionization mass spectrometry for the simultaneous separation and identification of the ... the separation of proteins in the range from to 100 kDa Anal Biochem 166, 368–379 20 Zolla, L., Bianchetti, M., Timperio, A.M & Corradini, D (1997) Rapid resolution by reverse-phase high performance...

Ngày tải lên: 08/03/2014, 16:20

Ngày tải lên: 09/03/2014, 18:55

Ngày tải lên: 22/03/2014, 18:20

Ngày tải lên: 28/07/2014, 06:20

Ngày tải lên: 28/07/2014, 06:20

... chromatography), sắc ký trao đổi ion (ion exchange chromatography), sắc ký lỏng cao áp (high performance liquid chromatography), điện di mao quản (capillary electrophoresis) [15] 2.4.1 Sắc ký ... thời gian ngắn độ phân tách cao, dẫn xuất ổn định phát thông qua UV (Ultraviolet) 2.4.3 High Performance Liquid Chromatography (HPLC) HPLC đƣợc đời vào đầu năm1970 công cụ phân tích đầu tay nhà ... hoá học trộn lẫn vào 2.4.3.1 Pha tĩnh Tùy theo mẫu phân tích mà ta có có mô hình pha tĩnh khác Liquid - Solid Dựa độ phân cực Những cấu tử có độ phân cực mạnh liên kết chặ với pha tĩnh chất có...

Ngày tải lên: 28/07/2014, 06:20

... AMINO ACID CỦA MỘT SỐ LOÀI NẤM BÀO NGƢ (Pleurotus spp.) BẰNG KỸ THUẬT SẮC KÝ LỎNG CAO ÁP (High performance liquid chromatography - HPLC) Giáo viên hƣớng dẫn: Sinh viên thực hiện: TS LÊ ĐÌNH ĐÔN ... chromatography) 13 2.4.2 Sắc ký lớp mỏng ( Thin layer chromatography _TLC) 14 2.4.3 High Performance Liquid Chromatography (HPLC) 15 2.4.3.1 Pha tĩnh 15 2.4.3.2 Pha động ... 35 TÀI LIỆU THAM KHẢO 36 vi DANH SÁCH CÁC CHỮ VIẾT TẮT ACN:Acetonitril HPLC: High performance liquid chromatography TLC: Thin layer chromatography PITC: phenylisothiocyanate PTC: phenylisocarbamyl...

Ngày tải lên: 28/07/2014, 06:20

... identification method Instruments and conditions High- performance liquid chromatography-diode array detection (HPLC-DAD) analysis was performed on a liquid chromatography system (Agilent 1100 Series, ... chromatogram; ESI-MS: electrospray mass spectrometry; LC-ESI/MS: liquid chromatography-electrospray mass spectrometry; HPLC-DAD: highperformance liquid chromatography-diode array detection; MS/MS: tandem ... Results and discussion Optimization of sample pre-treatments procedure and separation conditions Various methods including liquid- liquid extraction and solid-phase extraction were tested during method...

Ngày tải lên: 13/08/2014, 15:21

... herbs, chromatographic fingerprinting is simple and useful Thus, this study aims to identify the full profile fingerprint of nucleosides and nucleobases in mycelial AC by using high- performance liquid ... nucleosides, bases and their analogues in natural and cultured Cordyceps by pressurized liquid extraction and high performance liquid chromatography-electrospray ionization tandem mass spectrometry (HPLC-ESI-MS/MS) ... column performance and appropriateness of the chromatographic conditions, the number of theoretical plates, selectivity, resolution and peak symmetry values were determined as the indicators of separation...

Ngày tải lên: 13/08/2014, 15:21

... amino acids and monosaccharides and has a lower pH value than R-RPM [31] In recent years, high performance liquid chromatography (HPLC) and gas chromatography (GC) have been employed to determine ... R-RPM: raw Radix Polygoni Multiflori; P-RPM: processed Radix Polygoni Multiflori; HPLC: high performance liquid chromatography; MS: mass spectrometry; THSG: 2,3,5,4′-tetrahydroxystilbene-2-O-b-D-glucopyranoside ... as: Liang et al.: Comparison of raw and processed Radix Polygoni Multiflori (Heshouwu) by high performance liquid chromatography and mass spectrometry Chinese Medicine 2010 5:29 Submit your next...

Ngày tải lên: 13/08/2014, 15:21

... contained in samples Sample Plant sources Oral liquid preparation Oral liquid preparation Oral liquid preparation Oral liquid preparation Oral liquid preparation Wine Wine Wine Beverage Barbary ... added into fluid products such as wine, beverage, and oral liquid formulation, etc Hence, eight liquid products for examination (five oral liquid formulation, two wines, and one beverage, their herbal ... Sample C (beverage) Sildenafil Vardenafil Tadalafil 1.2 1.5 1.2 Sample A (oral liquid formulation) Recovery Added (%) (mg) High level Found (mg) Recovery Added (%) (mg) Found (mg) Recovery (%) 10.8...

Ngày tải lên: 02/09/2015, 13:06

... means of standard chromatographic techniques such as thin layer chromatography, gas chromatography, capillary electrophoresis, flow injection analysis, and high performance liquid chromatography ... products In addition, high levels of histamine in seafood is also a health hazard for consumers.For these reason, the thesis "Studying histamine in seafood products by high performance liquid chromatography" ... an update Fish Technology News, 11: 3-5, Dalgaard, M., T.K, Smith, and A Harris 2006 High performance liquid chromatographic method for detection of biogenic amines in feedstufs, complete feeds...

Ngày tải lên: 06/10/2015, 13:05

... Chromatography A 1032 (2004) 2329 Che-Yi Lin, Shang-Da Huang - Application of liquid- liquy microextraction and high performance liquid chromatography for the determination of sulfonamides in water Analytica ... 1159 (2007)233-241 SUMMARY DETERMINATION SULPHONAMIDES RESIDUES IN FOOD BY HIGH PERFOPvMANCE LIQUID CHROMATOGRAPHY PART SEPARATION AND QUANTIFICATION SULFAGUANIDINE, SULFAMETHOXYPYRIDINE, SULFADOXINE ... using liquid chromatography coupled to electrospray tandem mass spectrometry Journal of Chromatography A 1157 (2007) 115-121 Guillermina Font Ana Juan-Garcia, Yolanda Pied - Pressurized liquid...

Ngày tải lên: 20/03/2014, 21:20

Ngày tải lên: 08/11/2012, 11:54

... today for free High Performance Web Sites Essential Knowledge for Frontend Engineers Steve Souders Beijing • Cambridge • Farnham • Köln • Paris • Sebastopol • Taipei • Tokyo High Performance Web ... think this should be a mandatory read for all new UE developers and performance engineers here.” — Nate Moch, www.zillow.com High Performance Web Sites is an essential guide for every web developer ... xiii A The Importance of Frontend Performance Tracking Web Page Performance Where Does the Time Go? The Performance Golden Rule B HTTP Overview ...

Ngày tải lên: 21/08/2013, 09:24

... HIGH PERFORMANCE DRIVES 57 - applied ... constant flux region -5 0.05 Fig 3.14 - Reversing transient of the drive of Fig 3.9  E Levi, 2001 HIGH PERFORMANCE DRIVES 58 - to ... and its spectrum Obviously, the current is not an ideal sine wave However, all the higher harmonics are of very high frequency and are situated around multiples of the 10 kHz frequency, which is...

Ngày tải lên: 17/10/2013, 02:15

... However if the triangular carrier frequency is high enough, one carrier wave may be utilised for all the three phases as is done here  E Levi, 2001 HIGH PERFORMANCE DRIVES 95 ... latter case, the need for decoupling circuit application is addressed as well  E Levi, 2001 HIGH PERFORMANCE DRIVES 94 - 5.2 ... HIGH PERFORMANCE DRIVES 93 - solved...

Ngày tải lên: 19/10/2013, 08:15