Overview
Fruit bodies of 13 cultivated species from trade and 4 wild species sold at Polish roadsides were dried and analyzed for 68 elements by ICP-OES; 28 were above detection. Wild species had more mercury, cadmium and arsenic, while cultivated species had more lead and nickel. Results are per kg dry weight with species means and ranges.
Key numbers
- White button mushroom (Agaricus bisporus, n = 25): cadmium 0.225, lead 1.18, total arsenic 0.537, total mercury 0.204 mg/kg dry weight (Table 3).
- Porcini (Boletus edulis): mercury 2.85, cadmium 3.00 mg/kg dw; birch bolete cadmium 3.64 mg/kg dw (Table 3).
- King oyster mushroom lead 3.53 mg/kg dw, range up to 11.5 (Table 3).
Methods (brief)
Cleaned fruit bodies dried at 45 °C, microwave nitric acid digestion, ICP-OES (Agilent 5110); detection limits 0.01 to 0.09 mg/kg dw. CRM recoveries 80 to 120% for most elements; expanded uncertainty 20%. Detection-limit and CRM tables are supplementary and not available.
Evidence Fitness
Broad species coverage with ranges, but dry-weight basis, no wild sample counts, and one internal error (wood ear magnesium mean 17,200 outside its range; the text gives 1720, flagged). Fresh and dried mushrooms are a proxy for cream-of-mushroom-soup; that thin page is not linked.