作为家禽饲料而出口的肉骨粉,对铬的含量有一定的限制。以往,铬的测定常用二苯胺脲光度法,本文试验了几种不同的消化方法,确定以硝酸-过氧化氢为消化试剂。用石墨炉原子吸收法测定样品含铬量在10—20ppm时,变异系数都在10%左右。方法能较准确测出骨粉中的含铬量,能满足了出口商品的检验。实验部分仪器P-E 460原子吸收分光光度计,HGA Meat and bone meal exported as poultry feed has some limitations on the chromium content. In the past, the determination of chromium commonly used diphenylamine urea photometry, the paper tested several different digestion methods to determine nitric acid - hydrogen peroxide as digestive reagents. Graphite furnace atomic absorption method to determine the chromium content of the sample at 10-20ppm, the coefficient of variation of about 10%. Method can more accurately detect the chromium content of bone meal, to meet the test of export commodities. Experimental equipment P-E 460 atomic absorption spectrophotometer, HGA