摘要
本文用 Ｂｏｒｌａｎｄ Ｃ＋＋编制主成分分析程序，用此程序分析云南菊科植物微量元素主成分，得到以Ｃｕ，Ｍｎ．Ｃｒ为代表的三个主成分方程，三个主成分方程为： ｙ１＝０．３６７ｘＣｕ－０．４０８ｘＭｎ－０．４４１ｘＺｎ－０．３３７ｘＮｉ－０．３４５ｘＦｅ－０．４３３ｘＰｂ－０．２９０ｘＣｒ； ｙ２＝０．３７４ｘＣｕ＋０．５８１ｘＭｎ＋０．２７６ｘＺｎ－０．３１５ｘＮｉ－０．２１２ｘＦｅ＋０．２３６ｘＰｂ－０．４９７ｘＣｒ； ｙ３＝－０．００３ｘＣｕ＋０．４３６ｘＭｎ－０．１５３ＸＺｎ－０．５７７ｘＮｉ＋０．１３５ｘＦｅ－０．３０７ｘＰｂ＋０．５８５ｘＣｒ．
By Borland C++ program of principal component was designed. It was made use of analysis trace elements in compositae plants from Yunnan. Contribution ration of Cu, Mn, Cr reached 82. 4%. They are principal components. There are three equations. y1 = 0.367 xCu - 0. 408xMn - 0. 441 xZn - 0. 337 xNi - 0. 345 xFe - 0. 433 xPb - 0. 290 xCr; y2 = 0. 374 xCu + 0. 581 xMn + 0. 276 xZn - 0. 315 xNi - 0. 212 xFe + 0. 236 xPb - 0. 497 xCr; y3 = - 0. 003 xCu + 0. 436 xMn - 0. 153 xZn - 0.577 xNi + 0. 135 xFe - 0.307xPb + 0. 585 xCr.
出处
《云南大学学报（自然科学版）》
CAS
CSCD
1998年第S3期431-434,共4页
Journal of Yunnan University(Natural Sciences Edition)
