HPLC for Food Analysis phần 7 pot

HPLC for Food Analysis phần 7 pot

HPLC for Food Analysis phần 7 pot

... the flow path above the column improves peak resolution in two 76 7 Chapter 7 Mobile phase pumps and degassers 78 In food analysis, pump performance is critical. In the examples, we describe a low-pressure ... perform according to food analytical requirements. The former has a single dual-piston mechanism for low-pressure gradient formation, whereas the latter has a double dual-...
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HPLC for Food Analysis phần 1 potx

HPLC for Food Analysis phần 1 potx

... . 76 Gradient formation at high pressure . . . . . . . . . . . . . . . 77 Gradient formation at low pressure . . . . . . . . . . . . . . . 77 VII Part Two The Equipment Basics HPLC for Food Analysis A ... used for various purposes in modern food processing. For example, citric acid adds a fresh, acidic flavor, whereas succinic acid gives food a more salty, bitter taste....
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HPLC for Food Analysis - A Primer potx

HPLC for Food Analysis - A Primer potx

... Unregistered Version - http://www.simpopdf.com HPLC for Food Analysis A Primer Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com HPLC for Food Analysis The fundamentals of an alternative ... . . . . . . . . . . . . . 76 Gradient formation at high pressure . . . . . . . . . . . . . . . 77 Gradient formation at low pressure . . . . . . . . . . . . . ....
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HPLC for Food Analysis phần 2 ppsx

HPLC for Food Analysis phần 2 ppsx

... array detector Chromatographic conditions HPLC and UV-visible diode-array detection have been applied in the analysis of antioxidants in chewing gum. Spectral information and retention times were used for identification. 5 Sample ... conditions HPLC and UV-visible diode-array detection have been applied in the analysis of preservatives in white wine and salad dressing. Spectral inf...
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HPLC for Food Analysis phần 3 ppt

HPLC for Food Analysis phần 3 ppt

... 600 70 0 FB1 334.4 352.4 370 .5 392.5 411.6 72 2.5 72 3.5 0 200000 100000 m/z 200 300 400 500 600 70 0 m/z 200 300 400 500 600 70 0 m/z 163.1 170 .1 220.1 336.2 354.4 376 .6 75 0.5 76 9.5 72 8.5 70 6.5 70 7.5 70 4 .7 250000 150000 50000 FB3 FB2 336.4 354.5 512.0 553.5 70 6.5 70 7.3 70 8 .7 728.5 72 8.5 Figure ... 600 70 0 m/z 163.1 170 .1 220.1 336.2 354.4 376 .6 75 0....
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HPLC for Food Analysis phần 4 ppsx

HPLC for Food Analysis phần 4 ppsx

... carbon, Working potential: 1 V Operation mode: amperometry Chromographic conditions for electrochemical detection The HPLC method presented here was used for the analysis of iodide in table salt. 17 34 HPLC ... conditions The HPLC method presented here was used for the analysis of anions in drinking water. Figure 23 Analysis of anions in drinking water with indirect UV-det...
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HPLC for Food Analysis phần 5 docx

HPLC for Food Analysis phần 5 docx

... have set maximum tolerance levels for these compounds in foodstuffs. HPLC is now preferred for the analysis of amines in food matrices because of its shorter analysis time and relatively simple sample ... software components needed for successful HPLC, and an introduction to the analytical techniques that have become routine in food analysis Part Two Chromatographic con...
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HPLC for Food Analysis phần 6 ppt

HPLC for Food Analysis phần 6 ppt

... 45 shows the advantage of Peltier control over conventional air cooling. 60 70 .40 70 .60 70 .80 71 .00 71 .20 123 45 67 8 910 Run number Retention time Day Night Day Conventional column oven Agilent ... prerequisite for successful food analysis. The broad selection of cleanup and enrichment techniques takes into account the many matrices and compound classes under study. Sampl...
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HPLC for Food Analysis phần 8 ppt

HPLC for Food Analysis phần 8 ppt

... 13 .72 A 19.024 18.9 87 19.000 1000 1000 1 .7 N-Acetylsulfapyidine 14.66 A 23.3 07 23.282 23.282 976 1000 1.1 Ethopabat *up 13.40 A 23. 874 23.840 23.848 911 996 2.3 Benzthiazuron 12.80 A 24.0 47 24.024 ... is a well-established technique for food analysis, LC/MS is only now emerging as a useful tool in this area. A GC-based analysis is appropriate only for those food compounds...
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HPLC for Food Analysis phần 9 ppsx

HPLC for Food Analysis phần 9 ppsx

... [cis]-9) molecular weight = 884 .78 1 molecular formula = C 57 H 104 O 6 8 APCI requires some compound volatility and is less suitable for highly thermally labile compounds. Figure 74 shows a typical triglyceride ... provide for automated drawing of the baselines during postrun replotting and for the plotting of calibration curves showing detector response. For unattended analyses...
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