Question

Lead concentration of blood is considered alarming at

• A. $4-6\mu m/100ml$
• B. $10\mu g/100ml$
• C. $20\mu g/100ml$
• D. $30\mu g/100ml$

Answer 1

The correct option is D $30\mu g/100ml$

Lead is the major heavy metal pollutant released by the vehicular exhausts. It persists in the air and precipitates with the rains. In reaches the human body when consumed through water or inhaled as suspended particle. At the concentration of 30μg/100ml in blood, it is considered poisoning as it can cause aplastic anaemia, tumour and cancer.

Hence, the correct answer is '30μg/100ml'.