Air Pollution in Cigarettes per year and increased health risks
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Myhealthbeijing has reported that the first official particulate matter 2.5 micron readings from Beijing have been 72 to 93 micrograms per cubic meter.

Converting micrograms per cubic meter of particulars in air into weight of particulates through lungs each year

Do not let the air pollution units confuse you. I will convert the micrograms per cubic meter in the air into pounds through your lungs each year.

In major cities there is between 20-370 micrograms of particulates (PM10 10 micron) per cubic meter of air.

Each day you take over 20,000 breaths and breathe about 35 pounds (15.9 kg) of air. At sea level and at 20 °C, dry air has a density of approximately 1.2 kg per m³ (cubic meter). So every day you are breathing 13.2 m³ of air. (Note - some use 18 cubic meters of air per day. the amount of air breathed depends upon elevation and other individual factors.) Therefore,

13.2 m³ • 20 micrograms = 265 μG (micrograms) = 0.265 mg (milligrams)
13.2 m³ • 370 micrograms = 4910 μG (micrograms) = 4.91 mg (milligrams)

So 0.2-4.9 mg of particulates enter into your lungs every day unless you live some of the particularly clean air areas.

In one year per the above statistics, 97-1800 mg (0.097 to 1.8 grams) of particulates enter your lungs. So in Beijing (with a very high average particulate load) over 1/8 ounce of particulates gets into each person's lungs each year. This may not sound like a lot, but the lungs don't have very effective mechanisms for expelling particulates that collect, so the effect is mostly accumulative.﻿
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