Overview
Chowdhury and Alam measured cadmium, chromium, lead, nickel, iron and copper by AAS in muscle, brain and liver of chicken, Sonali chicken, cow, goat, duck, pigeon and quail bought in three Noakhali markets in 2022 and estimated health risks. Most lead and cadmium means exceeded the maximum allowable concentrations the authors cite, and liver generally carried more metal than muscle.
Key numbers
- Chicken muscle: lead 3.13 ± 1.01, cadmium 0.16 ± 0.005 mg/kg fresh weight (Table 1).
- Cow muscle: lead 4.83 ± 1.01, cadmium 0.48 ± 0.005 mg/kg fresh weight (Table 1).
- Duck liver cadmium 15.98 ± 0.87 mg/kg and goat liver lead 81.87 ± 29.95 mg/kg fresh weight (Table 1).
- Quail muscle cadmium below detection (Table 1).
Methods (brief)
Tissues were oven-dried at 60 °C, digested with nitric and sulfuric acids plus hydrogen peroxide and analyzed by AAS with deuterium background correction. Results are labelled mg/kg fresh weight without describing the conversion. Detection limits are in supplementary material that was not available; no certified reference material results appear in the main text.
Evidence Fitness
Sample counts are inconsistent (63 in the methods vs n = 9 per group in Table 1), and several values, such as copper of about 80 to 100 mg/kg in muscle and lead of 82 mg/kg in goat liver, are implausibly high, so the analytical reliability is doubtful. Direct evidence for chicken and other meats within meat-and-poultry; for chicken broth and chicken noodle soup it is a chicken meat proxy only.