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Industrial Chemistry: Prepared by Helen Njeri NJENGA

The emission factors of the 14 most abundant VOCs on sequential cold weather sampling dates (January 17 and March 12, 2003) are compared in Table 4. Indoor and outdoor temperatures and percent RHs were approximately equivalent between these dates (Table 1). However, the January air change rate was 0.58 h-1 versus 0.31 h-1 in March, likely due to the difference in wind conditions. Within both the aldehyde and the terpene hydrocarbon chemical classes, the ratio of the emission factor at the lower air change rate to the emission factor at the higher air change rate was near. | Industrial Chemistry Prepared by Helen Njeri NJENGA African Virtual university Université Virtuelle Africaine Universidade Virtual Africana African Virtual University NOTICE This document is published under the conditions of the Creative Commons http en.wikipedia.org wiki Creative_Commons Attribution http creativecommons.org licenses by 2.5 License abbreviated cc-by Version 2.5. African Virtual University 2 TABLE OF CONTENTS I. Industrial Chemistry 3 II. Prerequisite Course or Knowledge 3 III. Time 3 IV. Materials 4 V. Module Rationale 4 VI. Content 5 6.1 Overview 5 6.2 Outline 5 6.3 Graphic Organizer 7 VII. General Objective s 8 VIII. Specific Learning Activities 8 IX. Pre-assessment 11 X. Compiled List of all Key Concepts Glossary 14 XI. Compiled List of Compulsory Readings 15 XII. Compiled List of Resources 16 XIII. Compiled List of Useful Links 17 XIV. Learning Activities 20 XV. Synthesis of the Module 162 XVI. Summative Evaluation 163 XVII. References 165 XVIII. Student records 166 XIX. Main Author of the Module 166 XX. File Structure .