lead exposure and the derivation of maximum allowable concentrations and threshold limit values - storage battery

Maximum allowable concentration of the term (M. A. C. )
And threshold limit values (T. L. V. )
They have different meanings. The M. A. C.
It's the ceiling concentration, and T. L. V. is a time-
Weighted average of concentrations of hazardous substances in the atmosphere.
Value attributed to M. A. C. or T. L. V.
Will vary depending on the decision criteria for the selected response.
This response may be a clinical or biochemical change in human subjects caused by harmful substances.
A survey of lead workers was reported and conducted from the data they obtained and their work environment advice.
Investigations were conducted at printing and battery storage plants;
The development sequence of abnormal biochemical discovery was confirmed again. The T. L. V.
Each stage of lead absorption was determined by graphical method. T. L. V.
8 to 10-
The working hours are 010 mg. /m.
3 produce lead in urine of 015 mg. /l. , 012 mg. /m.
For about 50 μg of urine in the same proportion of men and women. /l. , 014 mg. /m.
3 Pro-alkaline color on 03/thousand water level, most likely 014 to 015 mg. /m.
Lead anemia 3.
The biochemical function selected is to increase the excretion of coproporphyrin and keep it below 50 μg. /l.
We suggest T. L. V.
It should be about 012 mg. /m.
In the case of 40-3 or morehour week.