What is the safe limit of heavy metal content in LD Slag for field application in acidic soils ?

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Paul Milham

I don't know what LD slag is, but I presume that it has a liming value and the reason it is applied. In that caes assume that all the heavy metals are available and apply the material on that basis considering local regulations

Sushanta Kumar Naik

LD Slag is Steel factory byproduct and it contains heavy metal like Chromium, lead, nickel, cadmium and arsenic. So, What should be the limiting value of heavy metal in the slag?

Susan Verghese

Actually the heavy metals found in LD slag is all toxic in nature,many r found to be carcinogenic also , More than 0.01ppm is not permissble in any edible items

What should be the permissible limit of heavy metal in LD slag (basic slag) for soil application?

Antoaneta Ene

Metal concentrations in slag could be compared with naturally occurring background levels of metals in soils, see the paper attached (D.M. Proctor et al,, "Physical and Chemical Characteristics of Blast Furnace, Basic Oxygen Furnace, and Electric Arc Furnace Steel Industry Slags", 2000).