Results: The blood lead contents of the low urine calcium group and the normal urine calcium group were 0. 56 ±0. 13μmol/L and 0. 43 ± 0. 13mol/L, there was a significant difference between the two groups.
H_2O_2 is used to transform Fe 2+ to Fe 3+ , EDTA to eliminate the interference of Fe 3+ by free fluorine, and iron and lead contents are determined directly by AAS in the presence of a large amount of fluosilicate radical and free fluorine.
The environmental lead pollution in the recycling storage batteries area was so serious that the lead levels of air,soil,drinking water and wheat were 0.016 3 mg/m 3,11 614 mg/kg,0.014 8 mg/L and 7.905 0 mg/kg,respectively.
alkaline phosphatase and neonatal hemoglobin? free erythrocyte protoporphyrin were examed. Rresults: (1) The geometric mean of maternal and umbilical blood lead levels in 79 cases of Hans and 59 cases of Uygur were 63.87 μg/L?
Result Umbilical blood lead levels were increased obviously bypassive and initiative smoking during pregnancy. The mean of leadlevels were 0. 52μmol/L and 0. 61μmol/L repectively. meantime thenewborn exceeding the safety limits (0. 48μmol/L) were 69% and79% separately.
Effect of lead contents on the properties of PMSZT piezoelectric ceramics
The experimental result shows that the samples consist of a mixture of tetragonal and rhombohedral phases in the range of lead contents x=0.95-1.06, grains grow up homogeneously and the minimum value of Curie temperature was obtained with x=1.02.
The contents of the elements in the surrounding site were intermediate between those of the calcified and control sites, except for the magnesium and lead contents, which were the lowest.
The increased blood Pb levels in glue sniffers may be related to the high lead contents of glues marketed in Turkey.
Therefore, its trace-lead contents could preserve the initial isotopic composition of the ore-forming fluids.
Increase in systolic blood pressure was significantly predictive with increase in blood lead levels.
Blood lead levels of 634 healthy Japanese (422 males and 212 females), aged 0-87, living in the Kyushu and Okinawa Islands, were determined by the colorimetric dithizone method and atomic absorption spectrometry.
However, there was no close association between lead levels in bone and exposure time, partly because of differences in exposure patterns and partly, probably, because of variations in the toxicokinetics of lead.
Lead levels in ancient and contemporary Japanese bones
Liver lead levels were higher for rats that were orally dosed with 100 mg lead acetate/kg body wt and fed a semipurified diet than those fed a pelleted diet.