Holsbeek L, Siebert U, Joiris C R
Laboratory for Ecotoxicology and Polar Ecology, Free University of Brussels (VUB), Belgium.
Sci Total Environ. 1998 Jul 3;217(3):241-9. doi: 10.1016/s0048-9697(98)00177-6.
Heavy metal concentrations (total and organic Hg, Ti, Cr, Cu, Zn, Cd and Pb) were determined in the muscle, liver and kidney of 36 dolphins stranded on the French Atlantic coast between 1977 and 1990: 29 common dolphins Delphinus delphis, five bottlenose dolphins Tursiops truncatus and two striped dolphins Stenella coeruleoalba. Total Hg concentration in the liver increased with age, while relative methylmercury concentration decreased, reflecting the existence of a slow demethylation process. To a lower extent, a similar pattern was observed in the kidney and muscle. No age-related increase was found for other heavy metals, although the highest levels for Cd and Cr were always found in adults. No difference in contamination could be detected between the 1977-1980 and 1984-1990 periods.
测定了1977年至1990年间搁浅在法国大西洋沿岸的36头海豚的肌肉、肝脏和肾脏中的重金属浓度（总汞和有机汞、钛、铬、铜、锌、镉和铅）：29头普通海豚（真海豚）、5头宽吻海豚和2头条纹海豚。肝脏中的总汞浓度随年龄增长而增加，而相对甲基汞浓度则下降，这反映出存在一个缓慢的脱甲基过程。在肾脏和肌肉中也观察到了程度较低的类似模式。其他重金属未发现与年龄相关的增加，尽管镉和铬的最高含量总是在成年海豚中发现。在1977 - 1980年和1984 - 1990年期间，未检测到污染差异。
