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KMID : 0377519800050010015
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Chung-Ang Journal of Medicine
1980 Volume.5 No. 1 p.15 ~ p.20
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Distribution Types of Urinary Mercury Excretion in Normal Male Adults
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Kim Young-Seon
Chung Kyou-Chull
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Abstract
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In order to clarify the distribution type of the urinary mercury excretion, urine specimens voided every 2 hours from 6 o’clock in the morning until 11 at night were collected from 21 healthy male volunteers who had no experience of exposure to mercury. Urinary mercury excretion was measured by dithizone colorimetric method recommended by NIOSH, method No. P & CAM 145. 1. Frequency distribution curve of mercury excretion in hourly voided specimens could be expressed by power function: y=270X^-1.57 (r^2=0.92). 2. Frequency distribution of the mercury excretion, when logarithmic transformation was done, indicated the bimodal distribution. Frequency distribution below 0.64 (ln-0.45) ㎍Hg/l was considered to be probably due to experimental errors. 3. Neglecting the data below 0.64㎍Hg/l, frequency distribution of mercury excretion transformed into logarithm was well fitted to a theoretical normal distribution of having the sample means and standard deviation (X^2=5.23, p＜0.10), showing the value of skewness β_1=-0.36 and kurtosis β_2=2.66. 4. Mean and standard deviation calculated from the lognormal distribution was found to be 16.6 (ln 2.81)±2.94 (ln 1.08) ㎍Hg/l.
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