Determination of I content in milk powder by ICP-MS direct injection method

Establish a kind of rapid determination method of iodine in milk powder,take a certain amount with milk powder samples use 0.5% emulsifier and 10% ammonia mixed solution of the capacity blending,and online join Te elements as internal standard,use the icp-ms determined directly.reducing the complex early steps.by means of measuring the national standard material GBW 10017 milk powder method detection limit,accuracy,the labeled recovery etc indexes,the actual samples with national standard methods for determination and comparison,the above indexes and the determination results can meet the need of practical detection.Through the comparison between the lab and a large number of long determination of the practice,this method can be used as a business enterprise to produce the real time monitoring method,strong practical value.