火焰原子吸收法快速测定鸡肉中的镁锌

RAPID DETERMINATION OF MAGNESIUM AND ZINC IN CHICKEN BY ATOMIC ABSORPTION SPECTROMETRY

用悬浮液技术处理鸡肉样品,将样品粉碎、过筛,制备成琼脂悬浮液,用火焰原子吸收法成功地测定了鸡肉中的镁和锌,对琼脂溶液用量及检出限进行了考察.实验表明,样品中的共存元素对镁无化学干扰,试液的粘度与空白溶液的一致,不存在背景吸收干扰.本方法的相对标准偏差小于2.1%,测定结果与灰化法一致,相对误差小于±2.6%.

Chicken sample was treated with suspension technique.The sample was crushed,sifved and so made into agar suspension.Magnesium and zinc in chicken were successfully determined by suspension technique-flame atomic absorption spectrometry.The amount of agar solution and detection limit were studied.The results indicat that the coexistent elements have no chemical interference,that viscosity of test solution is identical with its blank solution and there is no background absorption interference.The relative standard deviations are less than 2.1%.The determination results are consistent with those obtained by ashing method.The relative errors between them are less than ±2.6%.This method is convenient.