虾蛄可食组织中镉和砷的形态及分布特征

doi:10.7506/spkx1002-6630-20190119-229

食品科学 ›› 2020, Vol. 41 ›› Issue (8): 282-287.doi: 10.7506/spkx1002-6630-20190119-229

虾蛄可食组织中镉和砷的形态及分布特征

赵艳芳，康绪明，宁劲松，翟毓秀，尚德荣，丁海燕，盛晓风

（1.中国水产科学研究院黄海水产研究所，农业农村部水产品质量安全检测与评价重点实验室，山东青岛 266071；2.农业农村部水产品质量安全风险评估实验室，山东青岛 266071）

出版日期:2020-04-25 发布日期:2020-04-20
基金资助:
“十三五”国家重点研发计划重点专项（2017YFC1600702）；中央级公益性科研院所基本科研业务费专项（20603022018010；20603022017015）

Speciation and Distribution Characteristics of Cadmium and Arsenic in the Edible Tissues of Oratosquilla oratoria

ZHAO Yanfang, KANG Xuming, NING Jinsong, ZHAI Yuxiu, SHANG Derong, DING Haiyan, SHENG Xiaofeng

(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. Laboratory of Quality & Safety Risk Assessment for Aquatic Products, Ministry of Agriculture and Rural Affairs, Qingdao 266071, China)

Online:2020-04-25 Published:2020-04-20

摘要/Abstract

摘要： 为揭示虾蛄可食组织中镉和砷的形态及分布特征，分别运用电感耦合等离子体质谱法和高效液相色谱-电感耦合等离子体质谱联用技术分析虾蛄可食组织（肌肉和性腺）中镉和砷的总量及其形态。结果显示，虾蛄对镉具有极强的富集能力，实验采集的样品可食组织中总镉超标率达100%且总镉含量与雌雄性别无相关性，其中性腺组织中总镉含量约为肌肉组织的10 倍，形态分析显示大部分样品中毒性最高的无机离子态镉占总镉百分比低于20%，且各组织中的无机离子态镉与总镉呈显著正相关。虾蛄可食组织中总砷含量较高且与雌雄性别无相关性，性腺组织中的总砷含量普遍高于肌肉组织。实验采集的所有虾蛄样品可食组织中均检出三价无机砷和五价无机砷，部分样品和组织中检出一甲基砷和二甲基砷，其中肌肉组织中无机砷含量最高为0.46 mg/kg，未超出国家标准限量值，无机砷占总砷百分比范围为1.71%～6.14%，可食组织中无机砷含量与总砷之间无显著相关关系。砷甜菜碱是虾蛄可食组织中的主要砷形态。因此针对虾蛄高富集镉和砷的特性，亟需在形态分析的基础上深入开展镉和砷的生物利用率研究，提出科学、合理的标准限量值。

关键词: 虾蛄, 镉, 砷, 形态分析, 分布特征

Abstract: The present study was aimed to investigate the distribution characteristics and speciation of cadmium and arsenic in the edible tissues of Oratosquilla oratoria. The contents of total arsenic and cadmium and their species in the edible muscle and gonad were measured by using inductively coupled plasma mass spectrometry (ICP-MS). The free inorganic Cd2+ and different species of arsenic were analyzed with the high performance liquid chromatography-inductively coupled plasma mass spectrometry (HPLC-ICP-MS). The results showed that O. oratoria could accumulate high concentrations of cadmium in the edible tissues, and the concentration of total cadmium in all samples collected in the present study exceeded the maximum permissible concentration (MPC) of 0.50 mg/kg wet mass in China. In addition, the concentration of total cadmium was not significantly related to gender. The concentration of total cadmium in the gonad was almost 10 times as high as that in the muscle. Speciation analysis showed that the percentage of the most toxic free inorganic Cd2+ in relative to the total cadmium was below 20% for most of the samples, and there was a significantly positive relationship between the inorganic Cd2+ concentration and the total cadmium concentration. The total arsenic concentration in the edible tissues of O. oratoria was high regardless of gender. However, the concentration of total arsenic in the gonad was higher than that in the muscle. Inorganic arsenic was detected in all samples, and monomethylarsonic acid (MMA) and dimethylarsinic acid (DMA) were also found in some of the samples. The highest concentration of inorganic arsenic of 0.46 mg/kg was found in the muscle, which was below the maximum standard limit in our country, and the percentage of inorganic arsenic in relative to total arsenic in the muscle ranged from 1.71% to 6.14%. In addition, there was no significant relationship between inorganic arsenic and total arsenic for both the edible tissues examined. The organic arsenic AsB was the main species present in both the muscle and gonad of O. oratoria. Because of the high accumulation capacity for total cadmium and arsenic, it is urgent to establish a more accurate MPC of Cd for the edible tissues of O. oratoria. The metal bio-accessibility and bioavailability must be considered in order to improve the risk assessment analysis.

Key words: Oratosquilla oratoria, cadmium, arsenic, speciation analysis, distribution characteristics

中图分类号:

O657.63

赵艳芳，康绪明，宁劲松，翟毓秀，尚德荣，丁海燕，盛晓风. 虾蛄可食组织中镉和砷的形态及分布特征[J]. 食品科学, 2020, 41(8): 282-287.

ZHAO Yanfang, KANG Xuming, NING Jinsong, ZHAI Yuxiu, SHANG Derong, DING Haiyan, SHENG Xiaofeng. Speciation and Distribution Characteristics of Cadmium and Arsenic in the Edible Tissues of Oratosquilla oratoria[J]. FOOD SCIENCE, 2020, 41(8): 282-287.

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虾蛄可食组织中镉和砷的形态及分布特征

Speciation and Distribution Characteristics of Cadmium and Arsenic in the Edible Tissues of Oratosquilla oratoria

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