Lead in blood was determined by ato

Lead in blood was determined by atomic absorption spectrophotometry, using a wet ashing procedure
and a procedure in which the proteins were precipitated with trichloroacetic acid.

In both methods the
lead was extracted into isobutylmethylketone before measurement, using ammonium pyrrolidine dithio-
carbamate as chelator.

The simpler precipitation procedure was shown to give results identical with those
obtained with the ashing technique. In addition, blood specimens were examined by the precipitation
method and by spectral analysis, which method includes wet ashing of the samples, with good agreement.

All analyses were done on blood samples from 'normal' persons or from lead-exposed workers, and no
additions of inorganic lead were made. The relatively simple protein precipitation technique gave accurate
results and is suitable for the large-scale control of lead-exposed workers.

ผลลัพธ์ (อังกฤษ) 3:

Lead in blood was determined by atomic absorption spectrophotometry, using a wet ashing procedure
and a procedure in which the proteins were precipitated with trichloroacetic acid.


the In both methods lead was extracted into isobutylmethylketone before measurement, using ammonium pyrrolidine dithio-carbamate as chelator
.

simpler The precipitation procedure was shown to give identical results with those obtained with the
ashing technique. In addition, blood specimens were examined by the precipitation method
and by spectral analysis, which includes wet ashing method of the samples, with good agreement.

All analyses were done on blood samples from 'normal' persons or from lead-exposed workers, and no
.additions of inorganic lead were made. The relatively simple protein precipitation technique
gave accurate results and is suitable for the large-scale control of lead-exposed workers.