FOOD SCIENCE ›› 2022, Vol. 43 ›› Issue (14): 329-337.doi: 10.7506/spkx1002-6630-20210824-308

• Safety Detection • Previous Articles    

Accumulation, Distribution and Elimination of Atrazine in Oysters (Crassostrea gigas)

ZHENG Xuying, SUN Xiaojie, GUO Mengmeng, XING Lihong, LI Fengling, PENG Jixing, ZHU Panpan, LI Zhaoxin   

  1. (1. Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; 2. College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; 3. College of Life Sciences, Qingdao University, Qingdao 266071, China)
  • Published:2022-07-28

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Abstract: The accumulation characteristics, tissue distribution and elimination pattern of atrazine in Crassostrea gigas were studied by the semi-static water contact poisoning method after being exposed to seawater containing different atrazine concentrations of 10 and 100 μg/L. The results showed that for each exposure concentration, the content of atrazine in each tissue of C. gigas reached equilibrium between days three and seven days after being switched to clean seawater. Moreover, the half-life time of atrazine in C. gigas were 0.20–0.32 days with a bioconcentration factor (BCF) ranging from 1.68 to 3.46 mL/g. The gill and visceral mass were the major target tissues for the accumulation of atrazine, and the content of atrazine in the adductor muscle was the lowest. The elimination capacity of C. gigas for atrazine increased with increasing exposure concentration. Meanwhile, the content of atrazine in each tissue decreased exponentially with depuration time. The elimination rate of atrazine was 90.1%–97.1% after depuration for one day, and atrazine might be metabolized through the gill.

Key words: atrazine; Crassostrea gigas; accumulation; tissue distribution; elimination

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