Determination of Cadmium,Lead and Arsenic in Pickled Aquatic Products by ICP-MS Combined with HPLC
Cadmium,lead and different types of arsenic in three pickled aquatic products were analyzed by HPLC coupled with ICP-MS,and the spike recovery test was verified using certified reference materials.The results showed that cadmium,lead and arsenic were detected in all samples with a good linear relation within the range from 0.010 7 to 2.150 0 mg/kg,the linear correlation coefficients were all greater than 0.999 and the average spike recovery rate is 91.8%to 95.7%.Among the different types of arsenic tested,arsenobetaine exhibits the highest content(ranging from 0.233 to 2.480 mg/kg),and no inorganic arsenic(As3+and As5+)was detected.In addition,the high content of arsenobetaine in marine organisms indicates that arsenic is enriched in the organism.
HPLCICP-MSpickled aquatic productsanalysis of cadmium,lead and arsenic