Preface |
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xiii | |
Contributors |
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xv | |
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Chapter 1 Separation Mechanisms in Hydrophilic Interaction Chromatography |
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1 | (42) |
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1 | (2) |
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1.2 Historical Background: Recognition of the Contribution of Partition, Ion Exchange, and RP Interactions to the Retention Process |
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3 | (4) |
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1.3 Recent Studies on the Contributory Mechanisms to HILIC Retention |
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7 | (31) |
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7 | (7) |
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1.3.2 Contribution of Adsorption and Partition to HILIC Separations |
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14 | (6) |
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1.3.3 Further Studies on the Contribution of Ionic Retention in HILIC |
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20 | (1) |
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20 | (1) |
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1.3.3.2 Mobile Phase Considerations for the Separation of Ionogenic Compounds |
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21 | (2) |
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1.3.3.3 Ionization State of the Column as a Function of pH |
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23 | (3) |
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1.3.3.4 Quantitation of Ionic Retention Effects on Different Columns |
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26 | (7) |
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1.3.4 RP Retention on Bare Silica |
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33 | (2) |
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1.3.5 Electrostatic Repulsion Hydrophilic Interaction Chromatography (ERLIC): A New Separation Mode in HILIC |
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35 | (3) |
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38 | (5) |
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38 | (5) |
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Chapter 2 Stationary Phases for Hilic |
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43 | (44) |
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43 | (1) |
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2.2 HILIC Stationary Phases |
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44 | (17) |
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2.2.1 Underivatized Silica |
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44 | (1) |
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2.2.1.1 Totally Porous Silica Particles |
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45 | (5) |
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2.2.1.2 Superficially Porous (Core Shell) Silica Particles |
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50 | (1) |
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2.2.1.3 Monolithic Silica |
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50 | (1) |
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2.2.1.4 Ethylene Bridged Hybrids (BEH) |
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51 | (1) |
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52 | (1) |
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2.2.2.1 Neutral Derivatized Silica |
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52 | (4) |
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2.2.2.2 Zwitterionic Derivatized Silica |
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56 | (2) |
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2.2.2.3 Positively Charged Derivatized Silica |
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58 | (1) |
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2.2.2.4 Negatively Charged Derivatized Silica |
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59 | (2) |
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61 | (1) |
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61 | (1) |
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2.2.3.2 Sulfonated S-DVB Phases |
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61 | (1) |
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2.3 Commercial HILIC Phases |
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61 | (16) |
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2.3.1 Efficiency Comparison |
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62 | (9) |
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2.3.2 Retention and Selectivity Comparisons |
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71 | (6) |
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77 | (10) |
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77 | (1) |
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77 | (10) |
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Chapter 3 HILIC Method Development |
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87 | (24) |
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87 | (1) |
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3.2 General Method Development Considerations |
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88 | (5) |
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88 | (2) |
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3.2.2 Target Compounds Consideration |
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90 | (1) |
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3.2.3 Systematic Method Development |
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91 | (2) |
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3.3 HILIC Method Development |
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93 | (11) |
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3.3.1 Systematic Approach to Column Screening |
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93 | (4) |
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3.3.2 Optimization of Method Parameters |
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97 | (1) |
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3.3.2.1 Final Column Selection |
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97 | (2) |
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99 | (1) |
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99 | (2) |
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3.3.2.4 Buffer Types and Concentration |
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101 | (2) |
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3.3.2.5 Column Temperature |
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103 | (1) |
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103 | (1) |
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3.4 Detection for HILIC Methods |
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104 | (3) |
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104 | (3) |
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107 | (1) |
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107 | (4) |
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108 | (3) |
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Chapter 4 Pharmaceutical Applications of Hydrophilic Interaction Chromatography |
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111 | (58) |
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112 | (5) |
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4.1.1 Definition of the Problem |
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114 | (1) |
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4.1.2 Selection of Conditions |
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115 | (2) |
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4.1.3 Validation of the Method |
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117 | (1) |
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117 | (1) |
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4.2 Determination of Counterions |
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117 | (12) |
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4.2.1 Salt Selection and Options for Counterion Determination |
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117 | (3) |
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4.2.2 Specific Counterion Analysis |
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120 | (5) |
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4.2.3 Counterion Screening with Gradient Elution |
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125 | (3) |
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4.2.4 Suitable Reference Standards for Counterion Analysis |
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128 | (1) |
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4.3 Main Component Methods |
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129 | (6) |
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4.3.1 Potency/Assay Methods |
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129 | (2) |
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4.3.2 Equipment Cleaning Verification Assays |
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131 | (2) |
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4.3.3 Dissolution Methods |
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133 | (2) |
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4.4 Determination of Impurities |
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135 | (11) |
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4.4.1 Impurity Screening and Orthogonal Separations |
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135 | (3) |
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4.4.2 Impurity Identification |
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138 | (1) |
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4.4.3 Specific Impurity Determination |
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138 | (1) |
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4.4.3.1 Pyrimidines, Purines, and Nucleosides |
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138 | (2) |
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4.4.3.2 Hydrazines with Ethanol as Weak Solvent |
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140 | (1) |
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4.4.3.3 Neutral and Charged Polar Impurities in a Drug Substance |
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141 | (2) |
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4.4.3.4 Polar Basic Compounds and Impurities |
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143 | (1) |
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4.4.4 Statistical DOE for Optimization |
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144 | (2) |
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146 | (6) |
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4.5.1 Parenteral and Solution Formulations |
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146 | (2) |
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4.5.2 Tablets, Capsules, and Inhalation Products |
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148 | (2) |
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150 | (1) |
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4.5.4 Stabilizers and Antioxidants |
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150 | (2) |
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152 | (9) |
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4.6.1 Chiral Selectors and HILIC |
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153 | (1) |
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153 | (1) |
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4.6.1.2 Macrocyclic Antibiotics |
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154 | (2) |
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4.6.1.3 Chiral Crown Ethers |
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156 | (2) |
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158 | (2) |
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4.6.2 Conclusions for Chiral Separations |
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160 | (1) |
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161 | (8) |
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161 | (8) |
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Chapter 5 Hydrophilic Interaction Chromatography (HILIC) For Drug Discovery |
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169 | (26) |
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169 | (1) |
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5.2 HILIC Applications for In Vitro Biology |
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170 | (6) |
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5.2.1 Biological Screening and Hit Finding |
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170 | (1) |
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5.2.1.1 Target Selection and Assay Validation |
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171 | (2) |
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5.2.1.2 High-Throughput Screening (HTS) |
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173 | (1) |
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5.2.2 New Drug Discovery Strategies |
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174 | (2) |
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5.3 HILIC Applications for Discovery Chemistry |
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176 | (10) |
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5.3.1 Lead Identification |
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176 | (4) |
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180 | (1) |
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181 | (1) |
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181 | (2) |
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183 | (1) |
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5.3.3 Candidate Selection |
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183 | (3) |
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5.4 Practical Considerations |
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186 | (1) |
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187 | (8) |
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188 | (7) |
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Chapter 6 Advances in Hydrophilic Interaction Chromatography (HILIC) For Biochemical Applications |
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195 | (24) |
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195 | (1) |
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196 | (7) |
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6.2.1 Mono- and Disaccharides |
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196 | (1) |
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6.2.2 Oligosaccharides and Polysaccharides |
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197 | (1) |
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197 | (2) |
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6.2.3.1 Glycan and Glycopeptide Analysis |
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199 | (3) |
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6.2.3.2 HILIC for Sample Enrichment |
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202 | (1) |
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6.3 Nucleobases and Nucleosides |
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203 | (2) |
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205 | (1) |
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6.5 Amino Acids and Peptides |
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206 | (3) |
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209 | (1) |
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209 | (2) |
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211 | (8) |
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212 | (7) |
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Chapter 7 HILIC-MS for Targeted Metabolomics and Small Molecule Bioanalysis |
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219 | (20) |
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219 | (2) |
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7.2 The Role of HILIC-MS in Targeted Metabolomics versus Other LC Modes |
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221 | (2) |
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7.3 Strategies for Method Development Based on Retention Behavior of Targeted Metabolites on HILIC Stationary Phases |
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223 | (8) |
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7.3.1 Retention Behavior of Metabolites on HILIC Stationary Phases |
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225 | (2) |
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7.3.2 Robustness, Mobile Phase Compositions, and Matrix Effects |
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227 | (4) |
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231 | (8) |
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232 | (1) |
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232 | (7) |
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Chapter 8 HILIC for Food, Environmental, and Other Applications |
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239 | (26) |
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Aikaterini M. Gremilogianni |
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239 | (1) |
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8.2 Food Applications for HILIC |
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240 | (14) |
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8.2.1 Review of HILIC Analytical Methods for Food Analysis |
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240 | (1) |
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8.2.1.1 Sample Preparation in HILIC Methods Applied to Food Matrices |
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240 | (2) |
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8.2.1.2 HILIC Methods Applied to Food Matrices: Chromatographic Parameters and Detection |
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242 | (1) |
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8.2.2 Selected Detailed Examples of HILIC Applications in Food Analysis |
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243 | (1) |
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8.2.2.1 Melamine (MEL) and Cyanuric Acid (CYA) |
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243 | (7) |
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8.2.2.2 Water-Soluble Vitamins |
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250 | (3) |
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8.2.2.3 Seafood and Other Toxins |
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253 | (1) |
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8.3 Environmental and Other Applications of HILIC |
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254 | (3) |
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8.3.1 Review of Environmental Applications Based on the Stages of Method Development |
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254 | (2) |
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8.3.2 Selected Detailed Examples of Environmental and Other HILIC Applications |
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256 | (1) |
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8.3.2.1 Metals and Their Related Organic Compounds |
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256 | (1) |
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8.3.2.2 Pharmaceutical Compounds in Aqueous Environmental Samples |
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256 | (1) |
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8.3.2.3 Other Applications |
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257 | (1) |
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257 | (8) |
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259 | (6) |
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Chapter 9 Theory and Practice of Two-Dimensional Liquid Chromatography Separations Involving the HILIC Mode of Separation |
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265 | (42) |
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9.1 Fundamentals of Multidimensional Liquid Chromatography |
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265 | (13) |
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265 | (1) |
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9.1.2 Potential Advantages of 2D Separations over Conventional Separations |
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266 | (3) |
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9.1.3 Modes of 2D Separation |
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269 | (1) |
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9.1.3.1 Offline Fraction Transfer |
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270 | (1) |
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9.1.3.2 Online Fraction Transfer |
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271 | (1) |
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9.1.3.3 Conceptual Comparison of Different 2D Separation Modes |
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271 | (3) |
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274 | (2) |
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276 | (2) |
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9.2 Complementarity of HILIC Selectivity to Other Separation Modes |
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278 | (1) |
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9.3 Instrumentation and Experimental Considerations |
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278 | (13) |
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9.3.1 Online versus Offline 2DLC |
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280 | (1) |
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280 | (2) |
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282 | (5) |
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9.3.2 Solvent Incompatibility |
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287 | (1) |
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9.3.2.1 Partial Mobile Phase Evaporation |
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287 | (1) |
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9.3.2.2 Fraction Transfer Volume Relative to the Second Dimension Column Volume |
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288 | (1) |
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9.3.2.3 On-Column Focusing |
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288 | (1) |
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289 | (1) |
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9.3.3.1 General Considerations for Fast LC Separations |
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290 | (1) |
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9.3.3.2 Fast HILIC Separations |
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290 | (1) |
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291 | (7) |
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291 | (5) |
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296 | (1) |
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296 | (2) |
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9.5 The Future of HILIC Separations in 2DLC |
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298 | (9) |
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298 | (9) |
Index |
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