摘要
为了解贵州野生半夏和栽培半夏中主要微量元素含量,采用原子吸收光谱法(AAS)和原子荧光光谱法(AFS),对采自贵州12个不同地区的野生半夏和4个栽培半夏进行了微量元素(Pb,Cd,Cu,Zn,Fe,Mn,Hg,As)含量的测定。结果表明:野生半夏和栽培半夏样品中8种微量元素平均含量均为铁>锌>锰>铜>镉>铅>砷>汞,不同地区间微量元素含量存在明显差异,最高相差370多倍;贵州半夏存在较严重的镉污染,超标率达62.5%;其余重金属含量在标准范围内。
To know about main trace elements contents in P. temata in Guizhou, 12 wild samples and four cultivation samples were collected from Guizhou Province, and the contents of eight trace elements were determined by ASS or AFS. The results showed that the order of average contents of trace elements in wild and cultivation P. temata was Fe〉Zn〉Mn〉Cu〉Cd〉Pb〉As〉Hg. The contents of trace elements between different regions were obviously different, the maximum difference was more than 370 times, all of the content of heavy metals except Cd was in accord with the standard. Exceeded 62.5% of the P. temata samples had severe Cd Pollution in Guizhou.
出处
《贵州农业科学》
CAS
北大核心
2012年第7期235-238,共4页
Guizhou Agricultural Sciences
基金
国家科技支撑计划项目子课题"半夏规范化种植关键技术研究及应用示范"(2009BAI74B01-1)
贵州省科研机构创新能力建设专项"药用植物和作物资源研究与开发应用创新能力建设"[黔科合院所创能(2010)4002]
贵州省农业科学院专项资金项目"贵州不同居群半夏对重金属的累积及耐性研究"[黔农科院院专项(2011)022]
关键词
半夏
原子吸收光谱法
原子荧光光谱法
微量元素
Pinellia temata
atomic absorption spectrographic
atomic fluorescence
trace element
