Nakamura Kazuyo, Taira Junsei
Water Quality Control Office, Okinawa Prefectural Enterprise Bureau, 1336 Onaha, Nishihara-cho, Okinawa, 903-0103, Japan.
Biometals. 2005 Dec;18(6):651-8. doi: 10.1007/s10534-005-4575-z.
The concentrations of 55 elements in the millipede, Oxidus gracilis, soil and plant in the habitat were examined using inductively coupled plasma atomic emission spectrometry (ICP-AES) and inductively coupled plasma mass spectrometry (ICP-MS). In all the millipedes, Ca concentration derived from calcium carbonate in the exoskeleton was the highest at average 94 microg/mg-weight. The other major elements were the following: Mg, K, Na, Zn, Fe, Al, Cu, Sr, Ba, Mn and Ti (>1 ng/mg-body weight), whereas Se, Mo, Ag, Cd, Co, Li and Ce etc. were in trace levels. Interestingly, the various 15 elements such as Ca, Na, Zn, Al, Ba, Ga, Ag, Cd, Co and Y in environmental habitats were well reflected in the body of the millipede. Although the heavy metal contents, in the order of Cu>Pb>Cd, were similar to those of other invertebrates, Cu in the millipede was remarkably high concentration. Zn was maintained in a range of 72-394 ng/mg-weight as essential element in the body and no difference was found in the sexes. The C1 chondrite normalization pattern for lanthanoid series elements in the millipede, soil and plant indicated that the environmental habitats were well protected from pollution. These characteristics of internal elements and metal accumulation in the millipede or relation to their habitats would be useful information for the environmental pollution studies.
采用电感耦合等离子体原子发射光谱法（ICP - AES）和电感耦合等离子体质谱法（ICP - MS）检测了栖息环境中蜈蚣（光滑鼠妇）、土壤和植物中55种元素的浓度。在所有蜈蚣中，外骨骼中源自碳酸钙的钙浓度最高，平均为94微克/毫克体重。其他主要元素如下：镁、钾、钠、锌、铁、铝、铜、锶、钡、锰和钛（>1纳克/毫克体重），而硒、钼、银、镉、钴、锂和铈等处于痕量水平。有趣的是，环境栖息地中的钙、钠、锌、铝、钡、镓、银、镉、钴和钇等15种元素在蜈蚣体内均有良好体现。虽然重金属含量顺序为铜>铅>镉，与其他无脊椎动物相似，但蜈蚣体内的铜浓度显著较高。锌作为体内必需元素维持在72 - 394纳克/毫克体重范围内，且两性之间未发现差异。蜈蚣、土壤和植物中镧系元素的C1球粒陨石标准化模式表明，栖息环境受到良好的污染防护。蜈蚣体内元素和金属积累的这些特征或与其栖息地的关系将为环境污染研究提供有用信息。
