Knowledge Tree
heavy metals
Facts (13)
Sources
A critical review of industrial fiber hemp anatomy, agronomic ... bioresources.cnr.ncsu.edu 8 facts
measurementIndustrial hemp plants have deep roots measuring 45 to 90 cm in length, which facilitate the phytoremediation of heavy metals such as chromium, iron, and cadmium from the soil.
claimAccording to Wu et al. (2021), hemp biomass grown in contaminated soil can be utilized for building materials, insulation, composites, and other non-food and non-textile applications because the heavy metals do not affect the fiber quality.
referenceIndustrial hemp has potential for the phytoremediation of heavy metals, as reported in a 2022 study published in the journal Plants.
claimHemp is capable of phytoremediation, a process where the plant's deep root system absorbs pollutants or heavy metals to detoxify contaminated soils and aid in land reclamation, according to Placido and Lee (2022).
referenceAngelova et al. (2004) studied the bio-accumulation and distribution of heavy metals in fiber crops, specifically flax, cotton, and hemp.
claimProper handling and disposal of hemp biomass used for phytoremediation is necessary to prevent heavy metals like copper, cadmium, and nickel from re-entering the environment.
procedureContaminated hemp biomass can be incinerated to reduce it to ashes, which are then safely disposed of in landfills to prevent heavy metals from leaching back into the soil.
claimCannabis sativa L. has the capacity to tolerate and accumulate heavy metals including cadmium (Cd), chromium (Cr), and nickel (Ni) according to a study published in Plant and Soil.
Medicinal plants and human health: a comprehensive review of ... link.springer.com Nov 5, 2025 2 facts
claimSome herbal supplements, particularly those imported from countries with less rigorous manufacturing standards, have been found to contain heavy metals or hidden pharmaceutical substances, posing significant health risks.
referenceNuclear factor erythroid 2-related factor 2 (Nrf2) signaling plays a role in heavy metals-induced oxidative stress, according to the 2024 study by Tripathi et al.
Wild edible plants for food security, dietary diversity, and nutraceuticals frontiersin.org Nov 27, 2025 2 facts
claimThe most frequently recognized chemical hazards in spices are mycotoxins, followed by heavy metals such as lead, cadmium, and arsenic, and other chemical residues.
claimEthnomedical products derived from wild edible plants may contain harmful compounds, including alkaloids, monoterpenes, heavy metals, or pesticides.
Advances in Pharmacognosy for Modern Drug Discovery and ... jbph.org 1 fact
referenceA study by Khan et al. determined the presence of heavy metals, aflatoxins, pesticide residues, and microbial load in a polyherbal formulation designed to treat uterine fibroids.