Question

Lead concentration in blood is considered alarming if it is -

Answer 1

Explanation:

The concentration of lead in blood averages about 25μg/100mL. Increase to 70μg/100mL is generally associated with clinical symtoms. Hence, a level of 30μg/100mL is considered alarming...

Answer 2

Answer:

• Lead concentration in blood is considered alarming of it is 30 mg / 100 mL

Explanation:

• Lead  (Pb)  is  released  by  combustion  of  petrol as tetraethyl lead is used as antiknock in petrol.
• This lead is  very  harmful  and  causes  plumbism  or  lead  poisoning, which disturbs nervous system, liver, kidneys in adults and also causes brain damage in children.
• About 150 to 400 mg of lead is stored in the body of an average adult and blood levels average  about 25 mg/100 mL.
• Increase to  70  mg/100  ml  of  blood  is  generally  associated  with clinical symptoms.
• Hence a level of 30 mg/100 mL should be considered alarming.