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For lead, the critical organs in adults are the haemopoietic and peripheral nervous systems, where the critical effects (e.g., elevated free erythrocyte protoporphyrin concentration (FEP), increased excretion of delta-aminolevulinic acid in urine, or impaired peripheral nerve conduction) manifest when the blood lead level (an index of lead absorption in the system) approaches 200 to 300 µg/l.
Enzyme-based electrochemical biosensors for food safety: a review Harish Kumar, Rani Neelam Electrochemistry Laboratory, Department of Chemistry, Chaudhary Devi Lal University, Sirsa, Haryana, India Abstract: In recent years, food storage environment safety has been a major concern for food and health scientists.