原料蛋黄粉中锌含量的检测
目的 建立原料蛋白粉中锌含量的简便检测方法。方法 蛋黄粉待测样品经微波消解, 加入5 mL浓硝酸后缓慢振摇几次, 再加入2 mL过氧化氢放置5 min, 拧紧盖子在微波消解设备中进行充分消解, 冷却后在带孔式电热板上赶酸至1 mL, 用2%的盐酸溶液转移至50 mL容量瓶中, 摇匀。 结果 该检测方法仪器检出限为0.092 mg/kg, 在元素线性范围内相关系数R为0.999以上, 回收率为97.2%~101.5%。结论 本检测方法操作步骤简便, 检测结果准确可靠。
Objective To establish a simple detection method for zinc content in the egg yolk powder, and get the accurate results. Methods The method was performed by microwaving a certain amount of egg yolk powder for testing, and adding 5 mL of concentrated nitric acid with slow shaking a few times, then adding 2 mL of hydrogen peroxide for 5 min. Tightened the lid and put into the microwave digestion apparatus for digestion, and caught the acid to 1 mL after cooling in a perforated-style hot plate, then transferred to a 50 mL volumetric flask with 2% hydrochloric acid solution by shaking. Results The assay detection limit was 0.092 mg/kg, the element within the linear range correlation coefficient R was 0.999 or more, the recovery was 97.2%~101.5%. Conclusion The detection method is simple, accurate and reliable.
标题：原料蛋黄粉中锌含量的检测
英文标题：Detection of zinc content in raw egg yolk powder
作者：
其其格 内蒙古蒙牛乳业集团股份有限公司
乌尼尔 内蒙古蒙牛乳业集团股份有限公司
高娃 内蒙古蒙牛乳业集团股份有限公司
满都呼 内蒙古蒙牛乳业集团股份有限公司
常建军 内蒙古蒙牛乳业集团股份有限公司
中文关键词:蛋黄粉,锌元素,微波消解,
英文关键词:egg yolk powder,zinc,microwave digestion,
发表日期：2013-09-05
|
