Lead in human blood and milk from nursing women living near a smelter in Mexico City.
Lead levels in breast milk and blood were determined in women living within a 200-m radius of 3 smelters in Mexico City. All samples were analyzed on a Perkin Elmer 460 atomic absorption spectrometer equipped with HGA 2200. The mean blood lead level was 45.88 micrograms/dl (SD 19.88 microgram/dl), and the geometric mean of milk lead level was 2.47 micrograms/100 ml. The correlation coefficient of these two variables was 0.88. Using the mean value of lead found in breast milk, an infant of 5.5 kg would ingest 8.1 micrograms/kg/d in his diet. The daily permissible intake (DPI) established by the World Health Organization (WHO) in 1972 for an adult is 5.0 micrograms/kg/d.
Namihira
D
D
Centro de Estudios Académicos sobre Contaminación Ambiental, Universidad Autónoma de Querétaro, Mexico.
Saldivar
L
L
Pustilnik
N
N
Carreón
G J
GJ
Salinas
M E
ME
D000293:Adolescent; D000328:Adult; D004781:Environmental Exposure; D004787:Environmental Pollution; D005260:Female; D006801:Humans; D007854:Lead / Q000032:analysis* / Q000097:blood; D008669:Metallurgy; D008800:Mexico; D008895:Milk, Human / Q000737:chemistry*; D012044:Regression Analysis; D012959:Socioeconomic Factors; D013054:Spectrophotometry, Atomic
D007854:Lead