Bk. Lee et al., THE EFFECT OF RESPIRATORY PROTECTION WITH BIOLOGICAL MONITORING ON THE HEALTH MANAGEMENT OF LEAD WORKERS IN A STORAGE BATTERY INDUSTRY, International archives of occupational and environmental health, 65(1), 1993, pp. 190000181-190000184
Respiratory protection with maintenance free respirator and regular bi
ological monitoring with the measurement of zinc protoporphyrin for on
e year period not only made significant decreases of biological indice
s indicative of lead exposure (blood lead, delta-aminolevulinic acid i
n urine) in a storage battery workers, but also reduced the prevalence
of lead related symptoms.