ICP-AES法测定浆果中的常微量元素
2017-10-16陈亮杨意诗李晔辛秀兰杨军许肇初
陈亮,杨意诗,李晔,辛秀兰,杨军,许肇初
(北京电子科技职业学院生物工程学院,北京100176)
ICP-AES法测定浆果中的常微量元素
陈亮,杨意诗,李晔*,辛秀兰,杨军,许肇初
(北京电子科技职业学院生物工程学院,北京100176)
黑莓、蓝莓、无花果等浆果中含有丰富的钾、铁、锌、钙等矿物质元素,这些常微量的矿物质元素不仅为人体正常发育所必需,而且对人体的其他生命活动发挥着至关重要的作用。采用微波消解处理样品,并优化微波消解的条件,以电感耦合等离子体发射光谱仪(inductively coupled plasma emission spectrometer,ICP-AES)检测浆果中的Zn、Ca、Na、K、P、Mn等6种元素的含量,结果表明:浆果中Ca、Na、K等元素的含量较高,测定元素的相对标准偏差为0.01%~1.73%,回收率在91.07%~117.63%。
黑莓;蓝莓;无花果;常微量元素;电感耦合等离子体发射光谱仪(ICP-AES)
Abstract:Blackberries,blueberries and figs are rich in potassium,iron,zinc,calcium and other mineral elements.These mineral elements not only are necessary for the normal development of the human body,but also play a vital role to the human body.The samples were handled by microwave digestion,the conditions of which were opitimized.The contents of Zn,Ca,Na,K,P and Mn in three berries were detected by inductively coupled plasma atomic emission spectrometry(ICP-AES).The results showed that the contents of Ca,Na and K were higher in the berries.The relative standard deviations were 0.01%-1.73%,and the recoveries were 91.07%-117.63%.
Key words:blackberry;blueberry;fig;common and trace element;inductively coupled plasma emission spectrometer(ICP-AES)
蓝莓(blueberry),意为蓝色的浆果之意,人们视它为“超级水果”。一种是低灌木,矮脚野生,颗粒小,但花青素的含量很高;第二种是人工培育蓝莓,能成长至240公分高,果实较大,水分较多,花青素含量相对偏低。全世界分布的越橘属植物可达400余种,原产和主产于美国又被称为美国蓝莓。我国主要产在大兴安岭和小兴安岭林区尤其是大兴安岭中部,而且都是纯野生的。蓝莓果实中含有丰富的营养成分,具有防止脑神经老化、保护视力、强心、抗癌、软化血管、增强人机体免疫等功能,营养成分高。其中,由于蓝莓富含花青素,具有活化视网膜功效,可以强化视力,防止眼球疲劳而备受注目。也是世界粮农组织推荐的五大健康水果之一。
黑莓(blackberry),蔷薇科(Rosaceae)悬钩子属(Rubus)灌木,主要原产于新旧大陆北温带,北美东部和太平洋沿岸尤为丰富,在不列颠群岛和西欧为常见萌生林和绿篱植物。……
