PENCEMARAN UDARA DAN SAMPLING POLUTAN UDARA Oleh Sudrajat Program S-2 Ilmu Lingkungan UNMUL Samarinda 2010

Contaminants are : 1.Products or substances other than product manufactured 2.Foreign products 3.Particulate matter 4.Micro-organisms 5.Endotoxins (degraded micro-organisms) Cross-contamination is a particular case of contamination  What are Contaminants ?

Particle sizes Airborne Contaminants

Bioaerosol Sampling Analysis by non-culture-based methods (e.g. spore trap, Air-O-Cell™ cassette) – Identification and quantitation of (non- viable) particulate matter, including fungal spores, hyphae, etc. – Predominant individual genera and / or species identified relative rank or relative prevalence indoor / outdoor ratio

The BioCassette TM

Types of Biological Samples

Gambar Fungi mikroskopis Stachybotrys

Sumber-sumber & Penyebab kualitas udara yg buruk Kimiawi Biologis Fisika Psikososial

Sumber-sumber Biologis Pollen Mold / Fungus Bacteria Viruses By-products of microbes Epithelial cells – Pet dander – Human skin particles Dust mites Insects (& insect parts) – Roaches

Sumber biologis Air pada Pipa / daerah gelap dan lembab – Humidity / microbial growth / trigger illness & allergies – Humidity / dust mite growth  causes asthma / allergies

Sterile Swabs

Types of Biological Samples Air Viable or “Culture-based” – Employs the use of an Andersen (or similar) sampler – Results usually reported as “colony forming units per cubic meter of air” (CFU/m 3 ) Non-viable or “Non-culture-based” – Employs the use of a spore trap sampler – Results usually reported as “particles per cubic meter of air” (particles/m 3 )

Bioaerosol Sampling Fungi and bacteria by impactor / culture plate methods (i.e. Andersen sampler) – Requires sanitary handling – 28.3 Liters (1 cubic foot) per minute – Predominant individual genera and / or species identified Relative prevalence Indoor / outdoor ratio

Types of Biological Samples

Where Do Contaminants Come From? Outside air carries dust which is a contaminant People generate contaminants:  We completely shed our outer skin every 24 hrs.  Particles of 0,3 micron & greater are liberated at a rate varying between of to 10 million per minute  A person walking will liberate 5000 bacteria/minute and a single sneeze can produce up to 1 million bacteria. The manufacturing process itself can generate contaminants eg paint off equipment, dust from belt drives, etc 

Cross-contamination (1) Contamination Contaminants from Environment & Operators Contaminants from Equipment Cross Contamination Product from Environment & Operators Product from Equipment

Cross-Contamination (2) Cross-contamination can be minimized by 1.Personnel procedures 2.Adequate premises 3.Use of closed production systems 4.Adequate, validated cleaning procedures 5.Appropriate Levels of Protection of product 6.Correct air pressure cascade 

Why All the Concern About Dust? Typical size relationship between dust, bacteria and viruses Virus (0,006µm to 0,03µm) Dust Particle (0,5µm to 500µm) Bacteria (0,2µm to 2µm) Dust Is a Bacteria Carrier