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Foreword 0 Introduction 0 1 Scope 0 2 Normative references 0 3 Terms and definitions 0 4 Abbreviated terms 0 5 Principle 0 6 Apparatus and materials 0 6.1 Air sampling 0 6.1.1 Sampling head 0 6.1.2 Sampling train 0 6.1.3 Sampling pump 0 6.1.4 Needle valve 0 6.1.5 Volumetric flowmeter (rotameter) 0 6.1.6 Timer 0 6.1.7 Dry type gas meter (optional) 0 6.1.8 Meteorological instruments (optional) 0 6.1.9 Instruments for unattended sampling (optional) 0 6.2 Preparation of filters 0 6.2.1 Vacuum evaporator 0 6.2.2 Plasma asher 0 6.3 Sample analysis 0 6.3.1 Scanning electron microscope (SEM) 0 6.3.2 Energy-dispersive X-ray system 0 6.3.3 Stereo-microscope 0 6.3.4 Gold-coated capillary-pore polycarbonate filters 0 6.3.5 Backing filters 0 6.3.6 Disposable plastic field monitors (optional) 0 6.3.7 Technically pure oxygen 0 6.3.8 Rubber connecting hoses 0 6.3.9 Filter containers 0 6.3.10 Routine electron microscopy tools and supplies 0 6.3.11 Sample for resolution adjustment 0 6.3.12 Sample for magnification calibration 0 7 Air sample collection and analysis 0 7.1 Measurement planning 0 7.2 Collection of air samples 0 7.3 SEM specimen preparation 0 7.4 Analysis in the scanning electron microsc

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