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  • 1975-1979  (2)
  • Biological monitoring  (1)
  • Flameless atomic absorption spectrophotometry  (1)
  • Chemistry
  • 1
    Electronic Resource
    Electronic Resource
    Comparative study on determination of lead in blood by flame and flameless atomic absorption spectrophotometry with and without wet dignestion (1977)
    Springer
    International archives of occupational and environmental health 39 (1977), S. 121-126 
    Details
    ISSN: 1432-1246
    Keywords: Blood lead ; Direct Chelation-extraction ; Flame atomic absorption spectrophotometry ; Flameless atomic absorption spectrophotometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two series of lead-containing human blood samples, one series of 53 samples of blood impregnated with lead nitrate at various concentrations up to 100 µg/dl, and the other series of 50 samples obtained from lead-exposed workers and containing lead up to 70 µg/dl, were analyzed by the following three methods of different analytical principles; 1) the flame atomic absorption spectrophotometry after wet digestion, 2) the direct chelation-extraction (avoiding wet digestion; Hessel, 1968) followed by flame atomic absorption spectrophotometry, and 3) the flameless atomic absorption spectrophotometry. The results were compared mutually and also with those from 4) the automated analysis (Ikeda et al., 1977).It was proved that good agreements in measured values exist between any pair of the analytical methods out of the four, the correlation coefficients being higher than 0.8. The results by the second method agreed best with those by the first method (standard but time- and hand-consuming) with slope of the regression line next to 1 and a very small intercept. The advantages of the methods studied were compared.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00380892
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    GLC analysis of alkylphenols, alkylcatechols and phenylphenols in the urine of workers as a measure to prevent occupational leucoderma (1978)
    Springer
    International archives of occupational and environmental health 41 (1978), S. 125-138 
    Details
    ISSN: 1432-1246
    Keywords: Amylphenol ; Biological monitoring ; Butylcatechol ; Butylphenol ; Isopropylcatechol ; Methylcatechol ; Nonylphenol ; Octylphenol ; Phenylphenol ; Urinalysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary GLC systems are developed for quantitative urinalysis of leucodermogenic phenols and catechols, i. e., p-tert.-butylphenol, p-tert. Amyphenol, p-octylphenol, p- and o-phenylphenol, 3- and 4-methylcatechol, 3-isopropylcatechol, and 4-tert.-butylcatechol. The systems were successfully applied for the exposure assessment of the workers in factories producing p-tert.-butylphenol, p-octylphenol and/or 4-tert.-butylcatechol. In accordance with estimated exposure intensities, the concentrations in the urine of product packers were higher than those of plant operators and engineers. The levels were reduced by the improvement of hygienic conditions in the workshops. Importance of biological monitoring is discussed in relation with the possible skin penetration. From the data obtained, BP concentration in urine, 2 μg/ml, is tentatively proposed as a urinary biological threshold limit value to prevent leucodermogenic effect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00381797
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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