title: [Spectral determination of the contents of mineral elements in polygonum cuspidatum].
abstract: The present paper reports the determination of mineral elements by FAAS, including K, Ca, Na, Mg, Fe, Zn, Mn and Cu. The best condition for the determination was investigated. The best ionization inhibitor and acidity media were confirmed. The experiment used CsCl to prevent ionization interference, and the concentration of HCl was controlled below 2%. At the same time SrCl prevented interference of P to Ca. So the value of absorbance was stable. The results were obtained by calibration curve method. The analysis method is simple, rapid, accurate and fitting to the determination of mineral elements in plants. The recoveries of the method are 90.5%-108.2%. The relative standard deviations are 0.3%-0.7%. The result show that large amounts of mineral elements are embodied in polygonum cuspidatum. The contents of K and Ca are in conformation with the medical effects of polygonum cuspidatum, and each element is related closely to its growing.
authors.affiliation: Key Laboratory of Hunan Forest Products and Chemical Industry Engineering, Zhangjiajie Districts of Jishou University, Zhangjiajie 427000, China.
authors.forename: Min
authors.initials: M
authors.lastname: Zhang
authors.forename: Hua-zhong
authors.initials: HZ
authors.lastname: Yu
authors.forename: Yong
authors.initials: Y
authors.lastname: Cao
authors.forename: Xiao-ying
authors.initials: XY
authors.lastname: Bu
authors.forename: Cheng-ying
authors.initials: CY
authors.lastname: Lu
authors.forename: Ya-tian
authors.initials: YT
authors.lastname: Du
authors.forename: Rong-fang
authors.initials: RF
authors.lastname: Huang
mesh_terms: D002118:Calcium / Q000032:analysis; D004602:Elements; D045468:Fallopia japonica / Q000737:chemistry*; D008903:Minerals / Q000032:analysis*; D010936:Plant Extracts / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry; D019265:Spectroscopy, Near-Infrared / Q000379:methods; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D004602:Elements; D008903:Minerals; D010936:Plant Extracts; D014874:Water Pollutants, Chemical; D002118:Calcium