EESA10H3 Lecture Notes - Lecture 2: Nitrous Acid, Chronic Obstructive Pulmonary Disease, Asthma
20 Apr 2016
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Case study 1: london smog, 1952 big smog due to coal burning (factories) Relationship between smoke and sulfur dioxide directly correlated to death rate. Case study 2: indonesian fire 1997: smoke set to agriculture land larger than the continental united states. Secondary pollution hno2, so3, hno3, pans, h2o2, salts, h2so4. Pollution from burning fossil fuels o o o o o o o o o o. Asthma: particulates and so2 can irritate bronchial passage leading to sever difficulties in breathing, increase prevalence in 34% from 1983-93, the incidence among the children in australia was 1/5, doubling rate in less than 20 years. Chronic bronchitis: excessive amount of mucus is produced in bronchi which result in lasting cough, so2 and smoking is related to chronic bronchitis. Pulmonary emphysema: weakening of the wall of alveoli, enlarged and loss their resilience, shortness of breath is primary symptom, no2 is related. Others: lung cancer, heart disease, toxic poisoning, eye irritation, birth defect.
