Control and elimination of lead poisoning in manufacturing industry of storage battery

Objective To explore the possibility of control and elimination of lead poisoning in manufacturing industry of storage battery.Method The correlative analysis and curve fitting methods were used to analyze the preventive and control measures on lead poisoning,the air concentration of lead in workplace and the incidence of lead poisoning in lead workers etc.in battery factory that built since 1951 in Zibo.Result The retrospective analysis on the data from 1951 to 2005 showed that before the preventive measures were taken,the average lead concentration in workplace was 13.53 mg/m3;after taking preventive measures during the end 1970s,the average air concentrations were decreased to 1.00 mg/m3 and 0.5 mg/m3 during 1970s and 1980s respectively,after 1992,the average concentration further decreased to 0.3 mg/m3.As the result of these progress,the incidence rates of lead poisoning were decreased from 38.27% to 2.00% and 1.00% respectively,and no lead poisoning case occurred at all after 1992.Additionally,the average onset length of service was obviously prolonged from 4.2 years to 6.8 years.The results showed as well,that there was a close log positive correlation between air lead concentration and the prevalence of lead poisoning r=0.748 8,F=40.837 1(P=0.000 0).Conclusion It is definite,that the preventive or control measures on lead poisoning established during 50 years is suitable and effective,and the lead poisoning is controled or eliminated.