What are the common cannabis contaminants?

[Sensi*]

I'm trying to develop a test for medicinal cannabis that tests for common contaminants. I was wondering if anyone knows like lead or other chemicals often found in cannabis that are unhealthy. I know that chemical fertilizers leave behind more chemicals in the cannabis that are "unhealthy" but what are they? If this is confusing what does organic cannabis lack that makes it so healthy?

 

[masterKahn]

Chemical ferts use soluble salts that can remain in the plants. Organic ferts would be things like animal manure and droppings, compost, ect. I can't speak too extensively on the science but I'm assuming organic matter breaks up into basic units like nitrogen and potassium in the plant and if they remain at harvest time would be highly inert because they are not synthetic salts like Chemical ferts. A large majority of organic fertilisers consist of plant matter composted or passed through an animals digestive system then processed in some manner for use in the garden. So chemical ferts are chemicals made in a lab like Miracle grow and organic nutes are dead plants either rotted outside or in some bat's colon.

Mold is a VERY unhealthy contaminate in cannabis and for some medical users could cause life threatening complications.

 

[elmanito]

Common contaminants for medicinal herbs are mycotoxins, pesticides,PAH ( poly aromatic hydrocarbons), heavy metals, fungicides, bacteria like salmonella, E.coli

http://www.hc-sc.gc.ca/dhp-mps/alt_formats/hecs-sesc/pdf/marihuana/supply-approvis/qc-results_lot45-cq-eng.pdf

Namaste

 

[Storm Crow]

Here's what I got-

Here's what I got-

Smoke Pot, Get Lead Poisoning? (Germany/Europe)
http://www.webmd.com/news/20080409/smoke-pot-get-lead-poisoning

Neuropsychological effects of formaldehyde use
http://www.unboundmedicine.com/medl...uropsychological_effects_of_formaldehyde_use_

Microbiological contaminants of marijuana
http://www.hempfood.com/IHA/iha01205.html

Paraquat and marijuana: epidemiologic risk assessment.
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1650884&tool=pmcentrez

Adulteration of cannabis with tobacco, calamus, and other cholinergic compounds
http://www.cannabis-med.org/english/journal/en_2008_04_2.pdf

An evaluation of the quality of medicinal grade cannabis in the Netherlands
http://www.cannabis-med.org/english/journal/en_2006_01_1.pdf

Marijuana smoking and fungal sensitization.
http://www.ncbi.nlm.nih.gov/pubmed/6833678

Ammonia release from heated 'street' cannabis leaf and its potential toxic effects on cannabis users.
http://www.unboundmedicine.com/medl...ts_potential_toxic_effects_on_cannabis_users_

The use of fry (embalming fluid and PCP-laced cigarettes or marijuana sticks) among crack cocaine smokers
http://www.unboundmedicine.com/medl...arijuana_sticks__among_crack_cocaine_smokers_



The adulteration of cannabis with toxic chemicals should be punished with the same severity as when people poison Tylenol or other medications, IMHO!