Di you mean continental crust abundance ?

Please check these researchgate links for the answer.

https://www.researchgate.net/post/Does_anyone_know_the_permissible_limits_of_heavy_metals_in_soils

https://www.researchgate.net/post/Does_anyone_know_the_permissible_limits_of_heavy_metals_Mn_Mg_Cr_Pb_Ni_and_Cu_in_soil_and_plants

 The permissible levels of heavy metals in soil depend on the region. For example, if you are in a tropical region, the book of Landon (1991) might interest you (Booker tropical soil manual: a handbook for soil survey and agricultural

land evaluation in the tropics and subtropics, 2nd ed., Longman Scientific & Technical,

Harlow, 1991). In this link you have some limit concentration of metals:

http://www.skb.se/asporesearch/wp-content/uploads/2015/06/04_Soil.pdf.

But it is especially important to know soil properties (pH, texture...) and available metals in soil solution.

The limits of metals in soils are available in many text books referred above by friends although yet are to be refined.

Dear Ali Mohamed,

your question has so important all over the world. In many industrial processes produces residues, especially heavy metals, which have to be disposed of, brownfields arise and will supplied a new use, the mining and processing leave residues, these must be deposited and and and.

But not only in the soil to heavy metals are deposited, heavy metals can also access in the food chain, into groundwater, into the air and so on. However, there is also a natural heavy metal pollution, the so-called geological background of heavy metal , which must also be considered.

Soil will cleaned, water will treated to drinking water, etc. From one country to another are permissible values in regulations, laws etc established and controlled. It is prescribed as the samples must be taken, and must find which measurement methods are allowed to used, to determine the content of single heavy metals, to protect public health. 

In Germany we have the Federal Soil Protection Ordinance (BBodSchV), the drinking water regulations, food and consumer protection regulation etc in which the limits and accumulations are placed firmly.

I have you to the Federal Soil Protection Ordinance (BBodSchV). this is complemented by the Recycling Law, the Landfill Ordinance, Chemicals Act, etc. In Germany, the observance is extremely highly controlled.

Good luck!

Michael Lersow

There you will find information on the individual pollutants, soil types, propagation paths etc.

https://www.gesetze-im-internet.de/bundesrecht/bbodschv/gesamt.pdf

file:///C:/Users/M.%20PC/Downloads/heavy%20metal%204%20(6).pdf

see table 2

Dear Jean Aubin,

If you mean by permissible levels legal limits, then I would like to contradict you! The legal limits of heavy metals can always be oriented only on the health of people, never oriented only to the region. Would you say that the people at the equator more arsenic endured than as in Germany?! However, it is true that there are regional differences due to the geological background.

This is an important fact for agriculture. Areas with increased  non allowed heavy metal components can then not be used for agricultural purposes. But this is an other question!

All the best

Michael Lersow

 Dear Michael,

Ali is talking of permissible levels of heavy metals in soil. I suppose that his research concern agriculture. Also, the literature illustrates that the permissible levels of HMs depend on standardization organizations, and therefore the region. See for example http://www.sciencedirect.com.chimie.gate.inist.fr/science/article/pii/S0045653516301588.

Best Regards.

Dear Jean Aubin,

I am working on long term safety of every kind of radioactive waste and residues. Your second answer says the same as I have described in my first answer. Every country has its own legal limits for the handling with heavy metals. Thats not the same as legal limits are dependent of the region. Thats what I wanted to say in my answers. The legal limits can only have one goal: protection of the health of biosphere. .Also for the deposit of toxic residues and waste exists strict rules.

Thanks for your answer.

Michael Lersow

The levels depend in the original concentration of the metals in soils.   Collect and analyse samples in áreas without contamination and compare the results in the área.  Normaly the permisseble values are according with the future use of the área (risk evaluation).  Industry área, residencial área, school áreas, or simple forest restoratio or parks permit diferente level of concentration.

Look on Page 500 at the bottom of first column in (Distribution of copper, lead, cadmium and zinc concentrations in soils around Kabwe town in Zambia)

http://www.esdat.com.au/Environmental%20Standards/Dutch/ENGELSE%20versie%20circulaire%20Bodemsanering%202009.pdf

Dear Michael,

Thank you for informations. See you.

Hello Mohamed,

Maybe it's will be interesting for you watch permissible level for different type of soils in Québec (Canada)

http://www.mddelcc.gouv.qc.ca/sol/terrains/politique/annexe_2_tableau_1.htm

also, there are critters for most kinds of contaminants.

Best regards. 

Dear Ali,

in Russia the permissible levels of some heavy metalls in soils are:

Fe-38000 mg/kg, Mn -1500, Zn- 100, Cu-55,  Pb- 32.

Best regards

N.Osmolovskaya, Dr., Ass. Prof. St-Petersburg State University, Russia

https://reader.elsevier.com/reader/sd/4EE48AFD7B725ED324014046E8867AE4CBC552EC4671D617D38F3DB33B1159C17AD508829CB4894A043F3FB66F839F0F.

https://agr.wa.gov/departments/pesticides-and-fertilizers/fertilizers/metals-analysis-requirement

WSDA offers this tool to calculate permissible levels for our region based on current policy regulated HM that may possibly be added by amendment or fertilizers per year onto specific soil area.