CRJS 370 Criminalistics and Crime Analysis Notes Chapters 8-9.docx

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Criminal Justice
CRJS 370
Lindsey Wallace

Chapters 8 Drugs Drugs – natural/synthetic substance used to produce physiological/psychological effects in humans Psychological Dependence – continued use of drug caused by underlying emotional needs Physical Dependence – withdrawal sickness when drug use is abruptly stopped Desire to avoid withdrawal sickness ultimately causes physical dependence or addiction Narcotic – “Narkotikos”- lethargy, sluggishness, painkilling substance that depresses vital body functions i.e. blood pressure, heart rate, and may produce physical dependence Opiates – comes from opium (milky, white substance extracted through a cut made in the unripe pod of the poppy seed, plant grown in Asia) Heroin is an example of an opiate (its high solubility in H2O makes it street preparedness for usage rather simple) Synthetic Opiates – not derived from opiates, but have similar physiological effects Examples are oxycotin and methadone Hallucinogens – drugs that can cause alterations in mood, attitude, thought process, and perceptions Marijuana is the most widely used illicit drug in US Other examples are LSD, PCP, Psilocybin (Shrooms) and MBMA Depressants – drugs that slow down/depress the central nervous system Alcohol, barbitautes, antianxiety drugs, huffing/sniffing materials containing solvents i.e. glue, cement Stimulants – drugs that stimulate/speed up central nervous system Amphetamines – euphoria that produces hyperactivity with a feeling of clarity and hallucinations, usual injected crystal meth (ice) – usually smoked Cocaine – extracted from leaves of cocoa plant (Asia/South America), comes in crack or powder form Club drugs – synthetic drugs used at nightclubs, raves, bars, roofies, ecstacy, MDMA, bath salts Allows users to remain active for hours Controlled Substance Act Federal law – 5 schedules of classifications for controlled substances on the basis of the drug’s potential for abuse with 1 being the most dangerous and 5 being the least dangerous Drug Tests – Screening occurs first to ensure substance is an illicit drug Qualitative vs Quantitative Determination Qualitative – test of a powder substance, may reveal presence of heroin and quinine Quantitative – may reveal amount of heroin and quinine in substance (10% heroin and 90% quinine) Drug Color Tests Preliminary Tests - conducted either or scene or prior to being submitted to lab to establish whether or not a certain drug is present Different Drug tests for each drug Different chemical reagents react with drug to display certain color Drug Evidence Collection Photograph initial location and presence of drug Weigh the drugs on digital scale to record weight Field test (Screen test) to verify p
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