What are the critical limits for heavy metals in phosphate fertilizers?
Concentrated superphosphate
Phosphate rock
NPK
DAP
Raghad Mouhamad
1. Concentrated Superphosphate (CSP)
- Lead (Pb): ≤ 100 mg/kg
- Cadmium (Cd): ≤ 20 mg/kg
- Arsenic (As): ≤ 50 mg/kg
- Mercury (Hg): ≤ 2 mg/kg
2. Phosphate Rock
- Lead (Pb): ≤ 100 mg/kg
- Cadmium (Cd): ≤ 50 mg/kg
- Arsenic (As): ≤ 100 mg/kg
- Mercury (Hg): ≤ 2 mg/kg
3. NPK Fertilizers
- Lead (Pb): ≤ 100 mg/kg
- Cadmium (Cd): ≤ 50 mg/kg
- Arsenic (As): ≤ 50 mg/kg
- Mercury (Hg): ≤ 2 mg/kg
4. Diammonium Phosphate (DAP)
- Lead (Pb): ≤ 100 mg/kg
- Cadmium (Cd): ≤ 20 mg/kg
- Arsenic (As): ≤ 50 mg/kg
- Mercury (Hg): ≤ 2 mg/kg
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Mohammed Malik
Raghad Mouhamad Thank you so much for the excellent answer
Can I have a reference?
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