摘要
首次研究了江苏省3个主产区条斑紫菜中总砷及各种形态砷的含量从1月至4月不同收割时期的变化规律以及条斑紫菜对砷的富集系数。结果发现,条斑紫菜中不同形态砷含量差异很大,以砷糖含量最高,占总砷含量的90.40%～98.14%;二甲基砷次之,无机砷含量最低,含量在0.054～0.14 mg/kg,三者之间具有显著性差异(P<0.05)。2月份收割的紫菜样品总砷和砷糖含量最高,之后呈逐渐下降的趋势。而无机砷含量及其占总砷百分比则从1月至4月逐渐降低。条斑紫菜对砷具有极强的富集能力,富集系数在454.4～623.8。本研究进一步证明,条斑紫菜中无机砷含量远小于我国标准规定的无机砷限量。
The changes of total arsenic and different arsenic species in Porphyra yezoensis collected from January to April in 2011 from three coastal areas in Jiangsu Province were determined and the characteristics of As accumulation were for the first time analyzed.Results showed that in all samples collected from different areas and times,the organic arsenosugar（AsS）accounted for 90.40%-98.14% of the total As,the second high content was dimethyl arsenic（DMA）and the lowest was inorganic arsenic（iAs）,which ranged from 0.054 mg/kg to 0.14 mg/kg.And there are significant differences in three arsenic species（P0.05）.In addition,the total arsenic and arsenosugar in P.yezoensis peaked in February and then decreased gradually,while the content of iAs and the percentage of iAs to total arsenic kept decreasing from January to April in all the samples collected from three coastal areas.P.yezoensis had high As accumulation capability as the bioconcentration factor（BCF）was from 454.4 to 623.8.Present study further proved that the iAs content in P.yezoensis is far below the maximum limit according to the legislation in our country.
出处
《水产学报》
CAS
CSCD
北大核心
2011年第10期1519-1523,共5页
Journal of Fisheries of China
基金
农产品质量安全监管专项经费(2011)
中华人民共和国农业行业标准(10167)
关键词
条斑紫菜
无机砷
砷糖
富集系数
Porphyra yezoensis
inorganic arsenic
arsenosugar
bioconcentration factor
作者简介
通讯作者：赵艳芳，E-mail：zhaoyf@ysfri．ac．cn
