| 大骨节病区水土中有机物对硒存在形态和生物有效性的影响 |
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| 中文关键词 硒 腐植酸 生物有效性 |
| 英文关键词 selenium humic substances bioavailability |
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| 中文摘要 |
| 经测定, 低硒带大骨节病区土壤中80%以上硒及土壤水提液中30—96%的硒以有机结合态形式存在, 主要结合于土壤腐植酸类物质.病区饮水源中除低硒外, 并高有机物含量, 80%以上的硒与有机物结合.动物实验的结果表明, 腐植酸的存在显著降低了饲料中硒的生物有效性. |
| 英文摘要 |
| In Kaschin-Beck Disease (KBD) regions, seleniumin soil, soil water extract and drinking water was found to be mainly bound to or ganies. Humic .substances played an important role in the speciation distribution. Results from animal model showed that selenium deficient state was not only caused by low selenium intake, but also strongly influenred by the higher organic moment in the drinking water of KBD regions when compared with nearby normal regions. |
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