| 摘要: |
| 建立了气相色谱-冷原子荧光光谱法测定鲳鱼中甲基汞质量比的方法，并通过比较南通海域常见鲳鱼的鱼肉、鱼皮、鱼鳃和鱼内脏的甲基汞质量比水平，初步推断其在鲳鱼体内的富集规律。结果表明：在0~1 000 pg范围内甲基汞标准曲线为y=567.354 3 x-545.733 8，r≥0.999 9，检出限为0.03 ng/kg。甲基汞在鲳鱼各部位的质量比为2.11~20 μg/kg,RSD＜5.0%,加标回收率为74.6%~81.0%，且分布规律为鱼肉>鱼皮>鱼鳃>鱼内脏。该方法前处理简单、精密度和准确度较好，适用于鲳鱼中甲基汞的测定。 |
| 关键词: 鲳鱼 甲基汞 气相色谱-冷原子荧光光谱 |
| DOI： |
| 分类号:X835；O657.7+1 |
| 文献标识码:B |
| 基金项目: |
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| Study on the Accumulation of Methylmercury in Pomfret |
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LIU Lin juan，LU Liang
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Jiangsu Nantong Environmental Monitoring Center, Nantong, Jiangsu 226000,China
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| Abstract: |
| A method for the determination of methylmercury in pomfret by Gas Chromatography Cold Atomic Fluorescence Spectrometry was established. The enrichment rule of methylmercury in pomfret was preliminarily deduced by comparing the contents of methylmercury in the flesh, skin, gill and viscera of common pomfret in Nantong sea area. The results showed that the calibration curve of methylmercury in the range of 0～1 000 pg was y=567.354 3 x-545.733 8, r≥0.999 9, and the detection limit was 0.03 ng/kg.The mass fraction of methylmercury in all parts of pomfret was 2.11~20 μg/kg, RSDs were less than 5.0%, and the recovery rate were in the range of 74.6%~81.0%. The distribution pattern was flesh > skin > gill > viscera. The method is simple, accurate and suitable for the determination of methylmercury in pomfret. |
| Key words: Pomfret Methylmercury Gas Chromatography-Cold Atomic Fluorescence Spectrometry |
