6 Surface-Enhanced Raman Spectroscopy (SERS) with Nanomaterials (NMs) 117
6.1 Introduction 117
6.2 Theory of SERS 118
6.3 SERS Mechanisms 118
6.3.1 Electromagnetic Enhancement 119
6.3.2 Chemical Enhancement 120
6.4 Determination of SERS Enhancement Factor 121
6.5 Selection Rules 121
6.5.1 Image Field Model 121
6.5.2 Electromagnetic Field Model 122
6.6 Fabrications of SERS Substrates 123
6.6.1 Template-assisted Fabrication 124
6.6.2 Hybrid Fabrication 124
6.6.3 Fabrication by Using Colloids 124
6.6.4 Direct Deposition 125
6.7 Applications of SERS 125
6.7.1 SERS-Based Separation Applications 125
6.7.2 SERS-Based Sensor Applications 126
6.7.2.1 Environmental Analysis 126
6.7.2.2 Forensic Analysis 129
6.7.2.3 Biological Applications 131
6.8 Conclusions 133
References 133
7 Nanomaterials (NMs) for Biological Sample Preparations 147
7.1 Introduction 147
7.2 The Use of NMs in Diagnostic Platforms 148
7.2.1 The Optimization of NMs in Diagnostic Platforms 148
7.2.2 Biofunctionalization of NMs in Diagnostic Platforms 149
7.3 NMs-based Lab-on-a-chip (LOC) Platforms 150
7.3.1 Paper-based LOC Platforms 152
7.3.2 Centrifugal LOC Platforms 152
7.3.3 Droplet-based LOC Platforms 152
7.3.4 Digital LOC Platforms 152
7.3.5 Surface AcousticWave-based LOC Platforms 152
7.3.6 LOC Platforms for Biological Applications 153
7.4 Biomedical Applications of NMs 155
7.5 Sensor Applications of NMs 157
7.6 Conclusions 162
References 162
8 Magnetic Nanomaterials for Sample Preparation 173
8.1 Introduction 173
8.2 Synthesis of Magnetic Nanoparticles 174
8.2.1 Thermal Decomposition Technique 174
8.2.2 Coprecipitation Technique 175
8.2.3 Sol–Gel Synthesis 175
8.2.4 Hydrothermal Synthesis 176
8.2.5 Microemulsion-Based Synthesis 176
8.2.6 Flow Injection Synthesis 176
8.2.7 Aerosol/Vapor-Phase-Based Synthesis 176
8.3 Solid-Phase Extraction (SPE) 177
8.4 Magnetic Solid-Phase Extraction (MSPE) 177
8.4.1 MSPE for Environmental Samples 178
8.4.2 MSPE for Food and Beverage Samples 183
8.4.3 MSPE for Biological Samples 185
8.5 Conclusions and Future Trends 186
References 187
9 Lab-on-a-Chip with Nanomaterials (NMs) 195
9.1 Introduction 195
9.2 Lab-on-a-Chip (LOC) Concept 196
9.2.1 Paper-based LOC Systems 198
9.2.2 Centrifugal LOC Systems 198
9.2.3 Droplet-Based LOC Systems 198
9.2.4 Digital LOC Systems 199
9.2.5 Surface AcousticWave-Based LOC Systems 199
9.3 NM-Based LOC Platforms 199
9.3.1 NM-Based Transducers 199
9.3.1.1 Electrochemical Detection Systems 199
9.3.1.2 Optical Detection Systems 202
9.3.1.3 Other Detection Techniques 205
9.3.2 Nanoparticles as Labels in Microfluidics 206
9.3.3 NMs for Process Improvement 208
9.4 Conclusions and Future Perspectives 209
References 210
10 Toxicity and Risk Assessment of Nanomaterials 219
10.1 Introduction 219
10.2 Hazard Assessment of Nanomaterials 220
10.2.1 Dermal Toxicity of Nanomaterials 220
10.2.2 Inhalational Toxicity of Nanomater𝚤als 221
10.2.3 Carcinogenicity and Genotoxicity of Nanomaterials 223
10.2.4 Neurotoxicity of Nanomaterials 226
10.3 Toxicity Mechanism of Nanomaterials 227
10.4 The Traditional Risk Assessment Paradigm 229
10.5 Strategies for Improving Specific Risk Assessment 230
10.5.1 Combining Life Cycle Methodology with the Risk Assessment Approach 230
10.5.2 The Support of Risk-Based Classification Systems 231
10.6 Conclusions 232
References 232
11 Economic Aspects of Nanomaterials (NMs) for Sample Preparation 241
11.1 Introduction 241
11.2 Toxicity Concerns of NMs 242
11.3 Global Market for NM-Based Products 243
11.4 Conclusions 245
References 246
12 Legal Aspects of Nanomaterials (NMs) for Sample Preparation 251
12.1 Introduction 251
12.2 Safety Issues of NMs 251
12.3 Regulatory Aspects of NMs 252
12.3.1 Ethical Concerns in the Environmental Effects of NMs 253
12.3.2 Ethical Concerns in Occupational Health and Safety ofWorkers 254
12.3.3 Ethical Concerns of NMs in Food 255
12.3.4 Ethical Concerns of NMs in Drugs, Cosmetics, and Human Health 255
12.4 Conclusions 256
References 257
13 Monitoring of Nanomaterials (NMs) in the Environment 261
13.1 Introduction 261
13.2 Toxicity and Safety Concerns of NMs 262
13.3 Main Sources and Transport Routes of Nanopollutants 264
13.4 Requirements of Analytical Approaches 266
13.5 Sampling of NMs in Environmental Samples 266
13.6 Separation of NMs in Environmental Samples 267
13.7 Detection Techniques for the Characterization of NMs 268
13.8 Conclusions 270
References 270
14 Future Prospect of Sampling 275
14.1 Introduction 275
14.2 Sampling 276
14.3 Sample Preparation 276
14.4 Green Chemistry 278
14.5 Miniaturization of Analytical Systems 280
14.5.1 Miniaturization of Separation Techniques 281
14.5.2 Lab-on-a-Valve (LOV) as a Powerful Tool to Meet Green Chemical Principles 283
14.6 Conclusions 283
References 284
Index 289
Sample Preparation with Nanomaterials: Next Generation Techniques for Sample Preparation delivers insightful and complete overview of recent progress in the use of nanomaterials in sample preparation. The book begins with an overview of special features of nanomaterials and their applications in analytical sciences. Important types of nanomaterials, like carbon nanotubes and magnetic particles, are reviewed and biological sample preparation and lab-on-a-chip systems are presented.
The distinguished author places special emphasis on approaches that tend to green and reduce the cost of sample treatment processes. He also discusses the legal, economical, and toxicity aspects of nanomaterial samples. This book includes extensive reference material, like a complete list of manufacturers, that makes it invaluable for professionals in analytical chemistry.
About the Author Chaudhery Mustansar Hussain, PhD, is an Adjunct Professor and Director of Labs in the Department of Chemistry & Environmental Sciences at the New Jersey Institute of Technology (NJIT), Newark, New Jersey, USA. His research is focused on nanotechnology, analytical chemistry, advanced technologies & materials, environmental management, and various industries. Dr. Hussain is the author of numerous papers in peer-reviewed journals as well as prolific author and editor of several (around 50 books) scientific monographs and handbooks in his research areas.
Rüstem Keçili is currently an Associate Professor at the Yunus Emre Vocational School of Health Services, Anadolu University, Turkey. He worked as a researcher at MIP Technologies AB, Sweden, and was a visiting researcher at the University of Manchester, UK. His professional background covers nanomaterials, molecularly imprinted polymers and chromatography.
Chaudhery Ghazanfar Hussain is a Research Scholar in Computer Science and Technology at the Department of Education, Punjab, Pakistan. His key areas of research are Data Science, Computer Networks, Environmental Modeling, nanomaterials and Industrial development. He is author of monographs on software technology. He is a true IT professional and affiliated with several companies.