How can I extract lead from Instagram

Heavy metals and other harmful elements


The process of obtaining the best quality cannabidiol (CBD) begins with the selection of the raw material, i.e. hemp or "cannabis sativa".

One of the basic guarantees is to always purchase Global GAP certified materials.

However, to guarantee the final quality, it is necessary to follow strict protocols and perform analyzes once the CBD has been extracted.

In this article we briefly explain the various toxic elements that can be found in products made with hemp, either by the origin of the raw material used or by the type of extraction that was used.


Let us consider four groups of harmful elements.

1) heavy metals

Like all bioaccumulators, cannabis extracts its nutrients from the soil where it is grown and stores them in its above-ground part (mainly in the stems and leaves).

When aquatic or arable soil extract has high levels of heavy metals, sometimes due to its geographical location and geomorphological characteristics, sometimes due to pollution caused by human activities, the cannabis plant may have a concentration of heavy metals that is toxic for human or animal consumption.

The health effects of these compounds are moderate to severe, depending on the concentration, frequency, and duration of use (exposure), and the individual's ability to eliminate them.

In general, in all cases of poisoning, there is inflammation and destruction of cell structures. More precisely:

  • arsenic

    Arsenic occurs naturally in the earth's crust. Much of its spread in the environment is due to mining and commercial processes. In industry, arsenic is a by-product of the smelting process (separation of metal and rock) of various metallic minerals.

    Arsenic cannot be destroyed in the environment.

    Prolonged ingestion of small amounts of inorganic arsenic can cause the skin to darken and the appearance of small corns or warts on the hands, feet and trunk.

  • Mercury

    Mercury occurs naturally in the environment in metallic form (elemental mercury), inorganic form and organic form.

    About 80% of the mercury released through human activities is elemental mercury, which is released into the air, mainly as a result of fossil fuel use, mining, smelting and solid waste incineration.

    Most of the mercury in the environment occurs in the form of metallic mercury and inorganic mercury compounds.

    Elemental and inorganic mercury leaves the body with the urine or feces for weeks or months.

    Methylmercury (the most common form of organic mercury) is the form of mercury that is most easily absorbed through the digestive tract, easily enters the bloodstream, and quickly passes to other parts of the body. Only small amounts of methylmercury enter the bloodstream directly through the skin.

    The nervous system is very susceptible to mercury. High amounts of methylmercury or grain seeds treated with methylmercury or other mercury compounds can cause permanent brain and kidney damage, autism, depression, and respiratory problems.

  • cadmium

    Cadmium is a metal found in the earth's crust that is associated with zinc, lead and copper minerals and can accumulate in aquatic organisms and agricultural crops.

    Almost no cadmium is absorbed through the skin.

    Most of the cadmium can be converted into a non-harmful form by the body as long as exposure is limited.

    Long-term consumption of small amounts of cadmium can lead to an accumulation of cadmium in the kidneys, which has harmful effects on the kidney and bones.

    Common effects of prolonged exposure to cadmium: prostate cancer, bronchitis, infertility and vascular diseases.

  • copper

    Copper is released from the mining, agriculture and manufacturing industries and through the discharge of wastewater into rivers and lakes. Copper is also released from natural sources such as volcanoes, corrosive vegetation, and forest fires.

    Copper does not break down in the environment. Copper compounds can break down copper and release it into the air, water or food.

    Exposure to high copper concentrations leads to the same effects in children as in adults, namely damage to the liver, kidneys, anemia, irritation of the small and large intestines.

  • lead

    Lead does not break down, but lead compounds are converted by natural light, air and water. When lead is released into the air, it can be moved over long distances before being deposited on the ground.

    Lead is widespread in the environment. Most of this comes from activities such as mining and manufacturing, as well as fossil fuels.

    The effects of lead are the same whether ingested or inhaled.

    Lead can affect almost every organ and system in the body. The nervous system is the most sensitive in both children and adults.

    Prolonged exposure can lead to deterioration of the nervous system, weakness in the fingers, wrists, or ankles, increased blood pressure, and anemia.

    In pregnant women, exposure to high levels of lead can result in loss of pregnancy. In men, exposure to high levels can alter sperm production.

    Common effects of long-term lead exposure: anemia, sclerosis, fatigue, and kidney cancer.

2) Solvent and hydrocarbon residues

Using solvents to extract cannabinoids from the hemp plant without proper quality protocols can leave toxic residues in the CBD supplements.

Technologies like supercritical CO2 are safer than solvent-based extractions, but they are also much more expensive.

Prolonged contact with certain solvents and hydrocarbon residues can damage the nervous system. They can affect the blood, immune system, lungs, and skin.

Testing for the presence of organic solvents to make sure CBD products are free of these harmful compounds is a healthy habit.

3) pesticides

Pesticides are chemicals used in agriculture to protect crops against insects, fungi, weeds, and other pests.

These chemicals can have serious adverse health effects, such as causing cancer or affecting the functioning of the reproductive, immune, or nervous systems.

In some countries there is legislation or control by the authorities that go beyond the most basic justification.

Like heavy metals or solvents, pesticides can have different effects depending on a person's level of exposure and resistance.

4) Biological contaminants

Biological contaminants include molds, fungi, parasites and bacteria that could have infected the source material.

If contaminated hemp is used in the CBD extraction, the semi-finished product can also be contaminated.

Biological pollutants can trigger allergic reactions or harm the end user.


Good practices at the level of raw material selection, such as with the CBD extraction processes, are not an exemption to carry out professional controls and analyzes in order to guarantee a safe product.

The human and pet health consequences balance the results.

The CBD has a lot to contribute, and it is time to let go of misconceptions and myths in order to better grasp reality.