Crime Scene Investigation: SOURCES AND FORMS OF DANGEROUS MATERIALS
Inhalation At a crime scene, airborne contaminants can occur as dust, aerosol, smoke, vapor, gas, or fume. Immediate respiratory irritation or trauma might ensue when these contaminants are inhaled; some airborne contaminants can enter the bloodstream through the lungs and cause chronic damage to the liver, kidneys, central nervous system, heart, and other organs. Remember that some of these inhalants may be invisible!
Skin Contact : Because processing a crime scene requires the physical collection of items, skin contact is a frequent route of contaminant entry into the body. Direct effects can result in skin irritation or trauma at the point of contact, such as a rash, redness, swelling, or burning. Systemic effects, such as dizziness, tremors, nausea, blurred vision, liver and kidney damage, shock or collapse, can occur once the substances are absorbed through the skin and circulated throughout the body. The use of appropriate gloves, safety glasses, goggles, face shields, and protective clothing can prevent this contamination.
Ingestion : Ingestion is a less common route of exposure. Ingestion of a corrosive material can cause damage to the mouth, throat, and digestive tract. When swallowed, toxic chemicals can be absorbed by the body through the stomach and intestines. To prevent entry of chemicals or biological contaminants into the mouth, wash hands before eating, drinking, smoking or applying cosmetics. Also, do not bring food, drink or cigarettes into areas where contamination can occur.
Injection:Needlesticks and cuts from contaminated glass, hypodermic syringes or other sharp objects can inject contaminants directly into the bloodstream. Extreme caution should be exercised when handling objects with sharp or jagged edges.
