Wu T H, Rainwater T R, Platt S G, McMurry S T, Anderson T A
The Institute of Environmental and Human Health, Texas Tech University, Box 41163, Lubbock, Texas 79409, USA.
J Agric Food Chem. 2000 Dec;48(12):6416-20. doi: 10.1021/jf000321u.
Organochlorine (OC) residues were recently detected in nonviable Morelet's crocodile (Crocodylus moreletii) eggs from northern Belize. To further the assessment of contaminant exposure in Belizean crocodiles, nonviable Morelet's crocodile eggs (n = 11) from southern Belize and American crocodile (Crocodylus acutus) eggs (n = 12) from the coastal zones of Belize were screened for 20 OCs. Results indicated p,p-DDE to be the most prevalent OC (96% occurrence) in eggs examined, with concentrations ranging from 5 to 372 ng/g. These concentrations are similar to those observed in crocodile eggs (10-180 ng/g) from northern Belize. A general trend toward higher DDE concentrations in Morelet's crocodile eggs (mean = 103 ppb) compared with American crocodile eggs (mean = 31 ppb) was observed. However, this trend may be due to site-specific contamination rather than differences in interspecific susceptibility to chemical exposure. Other OCs detected in crocodile eggs included the parent compound, p,p-DDT, and its metabolite, p, p-DDD.
最近在伯利兹北部已无生命迹象的莫雷莱鳄鱼（Crocodylus moreletii）卵中检测到有机氯（OC）残留。为了进一步评估伯利兹鳄鱼的污染物暴露情况，对来自伯利兹南部的无生命迹象的莫雷莱鳄鱼卵（n = 11）以及来自伯利兹沿海地区的美洲鳄鱼（Crocodylus acutus）卵（n = 12）进行了20种有机氯的筛查。结果表明，在所检测的卵中，p,p - DDE是最普遍存在的有机氯（出现率为96%），浓度范围为5至372纳克/克。这些浓度与在伯利兹北部鳄鱼卵中观察到的浓度（10 - 180纳克/克）相似。观察到一个总体趋势，即莫雷莱鳄鱼卵中的DDE浓度（平均 = 103 ppb）高于美洲鳄鱼卵（平均 = 31 ppb）。然而，这种趋势可能是由于特定地点的污染，而非种间对化学物质暴露易感性的差异。在鳄鱼卵中检测到的其他有机氯包括母体化合物p,p - DDT及其代谢物p,p - DDD。
