Cabañero Ana I, Madrid Yolanda, Cámara Carmen
Departamento de Química Analítica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain.
J Agric Food Chem. 2005 Mar 23;53(6):2125-32. doi: 10.1021/jf048267v.
An in vivo experiment was conducted to evaluate the effects of sodium selenite, sepiolite, and bentonite on inorganic mercury (Hg) and methylmercury (MeHg) bioaccumulation. For this purpose 160 chickens were fed under different controlled conditions. Chickens were exposed to Hg(II) and MeHg added to feed with or without selenium or clays supplementation. No significant differences were observed in the voluntary intake and feed/gain conversion rates. The target organs of Hg(II) and MeHg in chickens were the liver and kidney, respectively, but the greatest body store was the muscle in both cases. A higher bioaccumulation for MeHg than for Hg(II) was observed. The results showed that addition of sodium selenite, sepiolite, or bentonite induced a decrease of up to 60-100% in the inorganic mercury bioabsorption. Bentonite addition to a MeHg-containing diet also caused a decrease in organic mercury bioaccumulation (29-67%). On the other hand, inorganic selenium and sepiolite did not decrease MeHg accumulation.
进行了一项体内实验，以评估亚硒酸钠、海泡石和膨润土对无机汞（Hg）和甲基汞（MeHg）生物累积的影响。为此，在不同的受控条件下喂养了160只鸡。鸡被暴露于添加或未添加硒或粘土补充剂的饲料中的Hg(II)和MeHg。在自愿摄入量和饲料/增重转化率方面未观察到显著差异。鸡体内Hg(II)和MeHg的靶器官分别是肝脏和肾脏，但在这两种情况下，最大的身体储存部位是肌肉。观察到MeHg的生物累积高于Hg(II)。结果表明，添加亚硒酸钠、海泡石或膨润土可使无机汞的生物吸收降低多达60 - 100%。向含MeHg的日粮中添加膨润土也会导致有机汞生物累积的降低（29 - 67%）。另一方面，无机硒和海泡石不会降低MeHg的累积。
