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当前位置: 首页 > 文章 > 超声波辅助消化-石墨炉原子吸收法快速测定海参中总钒和有机钒含量 食品科学 2015,36 (4) 126-130
Position: Home > Articles > Determination of Vanadium in Sea Cucumbers by Ultrasound-Assisted Digestion-Graphite Furnace Atomic Absorption Spectrometry FOOD SCIENCE 2015,36 (4) 126-130

超声波辅助消化-石墨炉原子吸收法快速测定海参中总钒和有机钒含量

作  者：
刘炎峻;徐杰;周庆新;薛勇;薛长湖;王静凤
单  位：
中国海洋大学食品科学与工程学院
关键词：
钒;海参;有机化程度;超声波辅助消化-石墨炉原子吸收光谱法
摘  要：
建立超声波辅助消化-石墨炉原子吸收法快速测定海参中钒元素的方法。通过单因素试验和正交试验选择适宜超声波消化时间30 min与超声波水浴温度60℃,以及最佳的原子吸收条件(灰化温度900℃、原子化温度2 700℃、灰化时间20 s、原子化时间5 s),实现了海参样品的快速消化,使金属元素快速释放,并成功应用到海参中钒含量的测定。方法加标回收率在94.2%~105.4%之间,检出限为1.44×10-3μg/m L,符合测定要求。在选定的工作条件下测定,结果表明中国南北方产地的仿刺参总钒和有机钒含量分别为0.27~1.43μg/g和0.22~1.08μg/g,具有明显的差异性,并且60.4%~85.7%的钒以有机钒形式存在。14种海参的有机钒分析发现,糙海参有机钒含量最高,达2.56μg/g。海参中的总钒及其有机钒含量受品种、采样地点和环境的影响。超声波辅助消化-原子吸收法测定海参中钒元素快速、稳定,具有较高的实用价值。
译  名：
Determination of Vanadium in Sea Cucumbers by Ultrasound-Assisted Digestion-Graphite Furnace Atomic Absorption Spectrometry
作  者：
LIU Yanjun;XU Jie;ZHOU Qingxin;XUE Yong;XUE Changhu;WANG Jingfeng;College of Food Science and Technology, Ocean University of China;
关键词：
vanadium;;sea cucumber;;organic degree;;ultrasound-assisted digestion and graphite furnace atomic absorption spectrometry
摘  要：
A fast method for vanadium determination by ultrasound-assisted digestion-graphite furnace atomic absorption spectrometry(UAD-GFAAS) was proposed. Using single factor and L9(34) orthogonal array designs, the best digestion conditions(30 min, 60 ℃) influencing and the best GFAAS conditions(ashing at 900 ℃ for 20 s, atomization at 2 700 ℃ for 5 s) were achieved. The UAD-GFAAS method could provide complete mineralization of the samples for vanadium determination in sea cucumber with a detection limit of 1.44 × 10-3 μg/m L and acceptable analytical recovery of 94.2%–105.4% for vanadium. Values of 0.27–1.43 μg/g in terms of total vanadium and 0.22–1.08 μg/g in terms of organic vanadium were obtained in sea cucumbers from different sampling sites, suggesting a significant difference between North and South coastal habitats of China. The highest vanadium content(2.56 μg/g) in Holothuria scabra was determined among fourteen species of edible sea cucumber. Total vanadium and organic vanadium contents showed significant differences among different species and different sampling sites of sea cucumbers. Moreover, most vanadium exists in an organic form. Therefore, ultrasound-assisted digestion-graphite furnace atomic absorption spectrometry is a rapid, accurate and stable method, which has a high practical value.

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