Trace Metals and Hemp

Trace Metals and Hemp

Growers are confronted by a number of issues concerning hemp.  One is the possible accumulation of trace metals (such as arsenic, cadmium, lead, mercury and others) into the above ground plant tissue.  Trace metals, sometimes referred to as “heavy  metals”, are present in all soils found in North Carolina.  Currently, there is no readily available soil test database that can predict metal uptake by hemp.  However, an elemental chemical analysis of the soil can provide the current level of these metals in fields selected for hemp production.  The Department of Crop and Soil Sciences at NC State University can determine the elemental content of arsenic (As), cadmium (Cd), copper (Cu), nickel (Ni), lead (Pb), and zinc (Zn) in soils.  Mercury (Hg) can be provided, as well, for an additional fee.  Results are expressed on a dry weight basis and provide a measure of the metal content of the soil sample relative to the distribution of the same metals across North Carolina per the US Geologic Survey measurements (2013).

Per Sample Cost:

  • Determination of As, Cd, Cu, Ni, Pb and Zn:  $100
  • Determination of As, Cd, Cu, Ni, Pb, Zn and Hg: $115


If you are an NC State Faculty, Staff or Graduate Student, please contact us directly before submitting samples.

For further information contact:
Kim Hutchison, Lab Manager
phone: 919-513-1297

For help with soil sampling for Trace Metal Analysis:
Download and read the Soil Sampling Fact Sheet

For sample submission:
Download and fill out the EATS Analytical Request Form-Hemp

Download and read the Hemp Testing Service Agreement

Ship or deliver samples with the completed EATS Analytical Request Form-Hemp to:
North Carolina State University
ATTN: Kim Hutchison
Department of Crop and Soil Sciences
Environmental and Agricultural Testing Service Laboratory
101 Derieux Place
3319 Williams Hall
Raleigh, NC 27695