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通过分析我国条斑紫菜主产区紫菜产品中无机砷、栽培海区海水、沉积物中总砷含量在整个生产周期中的变化情况,初步探讨栽培海区环境中砷含量与条斑紫菜中砷含量的关系。于2012-2013年紫菜栽培季节,按实际生产的采收批次,分别采收条斑紫菜原藻、加工品,对样品中的无机砷含量进行测定与分析,并对栽培海区的海水及表层沉积物中总砷进行定量检测与分析。结果显示,江苏省条斑紫菜原藻样品中无机砷含量为0.22~0.70mg/kg,加工品中无机砷含量为0.12~0.32 mg/kg,原藻及加工品中的无机砷含量随生产阶段的推后呈下降趋势,完全符合国家食品安全限量标准;栽培海区海水总砷含量为0.000 83~0.004 91mg/L,在整个生产周期都低于国家养殖用水水质标准对砷的限量要求,栽培海区海水中的总砷与当地紫菜产品中的无机砷之间总体呈正相关关系;表层沉积物中总砷含量范围为15.435~58.900μg/g,与条斑紫菜中无机砷含量没有明显的相关性。
By analyzing the changes of total arsenic in inorganic seaweeds and seawater in seaweed cultivars in the main producing area of Porphyra yezoensis in China during the whole production cycle, the arsenic contents in the cultivated sea area and the arsenic contents in Porphyra yezoensis relationship. In the 2012-2013 laver cultivation season, according to the actual production of the batches of harvest, were collected Porphyra yezoensis, processed products, samples of inorganic arsenic content was measured and analyzed, and the cultivation of sea water and the surface layer The total arsenic in sediment was quantitatively detected and analyzed. The results showed that the content of inorganic arsenic was 0.22-0.70mg / kg in the samples of P. alga and the content of inorganic arsenic in the processed products was 0.12-0.32 mg / kg. The contents of inorganic arsenic in the raw algae and processed products were different with the production stage The total arsenic content in seawater for cultivation was 0.000 83 ~ 0.004 91mg / L, which was lower than the national arsenic limit requirement for aquaculture water quality throughout the production cycle. The cultivation area The total arsenic in seawater is positively correlated with the inorganic arsenic in the local seaweed products. The total arsenic in the surface sediments ranges from 15.435 to 58.900μg / g, and has no obvious correlation with the inorganic arsenic in the Porphyra yezoensis.