测定动物饲料和粪便中各种元素,常用的样品处理法是酸消化和干灰化,前者环境污染大。对含钙量高的样品,消化时加入的硫酸易与钙形成较多的难溶盐而不易溶解,影响测定。后者温度与时间控制不当易造成元素挥发。我们采用盐酸浸提液提取大鼠饲料和粪便中钙、磷、铜、锌。并与灰化法进行了比较。 Determination of animal feed and feces in a variety of elements, commonly used sample processing method is acid digestion and dry ash, the former environmental pollution. For samples with high calcium content, sulfuric acid added during digestion easily forms more insoluble salts with calcium, which is not easily dissolved and affects the determination. The latter temperature and time control easily lead to volatile elements. We use hydrochloric acid extract to extract rat feed and excrement of calcium, phosphorus, copper and zinc. Compared with ashing method.