The contents, distributions and variation features of inorganic arsenic and mercury in aquatic products (shellfish, crustaceans, cephalopods and fishes) were analyzed and discussed. The samples were collected from coastal cities and sea near Zhejiang province in 2016. The degree of heavy metal pollution in aquatic products was evaluated by single factor pollution index (Pi). A preliminary assessment of safety of heavy metal in aquatic products was finished based on comparisons between heavy metal intake from aquatic products and adult acceptable daily intake. The detection rate of inorganic arsenic in aquatic products was 25.1% and shellfish was accounted 88.7% of the total. The inorganic arsenic was not detected in shrimp, squid, turtle and fish. The highest detection rate was Cyclina sinensis of 65.6%, but no sample exceed the national standard. Inorganic arsenic content in Sinonovaculaconstrzcta was the highest of 3.7%, higher than the national standard. The detection rate of Hg was 100%. Mercury in fishes was the highest. Arca Granosa has the highest mercury in shellfish, and the average was 0.03 mg/kg. Scylla serrata has the highest mercury content with an average of 0.04 mg/kg. Sepioidea has the highest mercury content in cephalopods. Inorganic arsenic content was much higher than mercury content in shellfish. There was no significant difference in mercury among species(p>0.05). The content of inorganic arsenic was significantly different among species (p<0.05). The inorganic arsenic contents in the Sinonovacula constrzcta and Tegillarca granosa were in the range of slightly polluted. Mercury and inorganic arsenic of HQ is far less than 1, which will not endanger human health.
MENG Chun-ying
,
ZHANG Xiao-jun
,
HUANG Li-ying
,
GU Jie
,
MEI Guang-ming
. The investigation of inorganic arsenic and mercury in aquatic products of Zhejiang province and their dietary risk assessment[J]. Food and Fermentation Industries, 2018
, 44(9)
: 247
-253
.
DOI: 10.13995/j.cnki.11-1802/ts.016015
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