Noguchi K, Shimizu M, Moriwaki K, Jinnouchi K, Sairenji E
Radioisotopes. 1980 May;29(5):221-6. doi: 10.3769/radioisotopes.29.5_221.
Mercury contents in head hair of 58 dentists, working at the hospital of Nihon University School of Dentistry were determined using neutron activation analysis. The values ranged from 2.47 ppm to 13.7 ppm. The frequency distribution of the mercury contents increased steeply at about 2 ppm to the maximum of 4 approximately 5 ppm, and decreased to about 11 ppm, its distribution pattern followed a log-normal one with a median of 5.46 ppm. The dentists were divided into two groups and the mercury contents in head hair of them were compared with each other. The arithmetic and geometric means of the values for dentists who handled amalgam in dental practice were 5.66 ppm (SD +/- 1.80) and 5.40 ppm (SD multiplied/divided by 1.36), while those for the dentists who did not handle amalgam in dental practice were 5.96 ppm (SD +/- 2.82) and 5.38 ppm (SD multiplied/divided by 1.59). The values of them agreed well with each other. The arithmetic mean for all dentists was 5.79 ppm (SD +/- 2.28) and the geometric mean of them was 5.40 ppm (SD multiplied/divided by 1.46). They were much lower than the values reported by Suzuki, Miyazawa or Sairenji, et al. in the past year, and they agreed well to those for normal Japanese men with the same age. Therefore it is concluded that proper mercury handling might be established in the dental office.
采用中子活化分析法测定了在日本大学牙科学院附属医院工作的58名牙医头发中的汞含量。其值范围为2.47 ppm至13.7 ppm。汞含量的频率分布在约2 ppm处急剧上升至最大值4约5 ppm，然后下降至约11 ppm，其分布模式遵循对数正态分布，中位数为5.46 ppm。将牙医分为两组，并比较了他们头发中的汞含量。在牙科实践中处理汞合金的牙医的算术平均值和几何平均值分别为5.66 ppm（标准差±1.80）和5.40 ppm（标准差乘以/除以1.36），而在牙科实践中不处理汞合金的牙医的算术平均值和几何平均值分别为5.96 ppm（标准差±2.82）和5.38 ppm（标准差乘以/除以1.59）。他们的值彼此吻合良好。所有牙医的算术平均值为5.79 ppm（标准差±2.28），几何平均值为5.40 ppm（标准差乘以/除以1.46）。这些值远低于铃木、宫泽或酒轮寺等人过去报道的值，并且与同年龄的正常日本男性的值吻合良好。因此得出结论，在牙科诊所可能已建立了适当的汞处理方法。
